./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label18.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 d08db41ae0d7ec8078cc06035e9e84ddb6f4cbeccb0dd0eb818a13f85c4c66c1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 15:18:18,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 15:18:18,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 15:18:18,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 15:18:18,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 15:18:18,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 15:18:18,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 15:18:18,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 15:18:18,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 15:18:18,365 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 15:18:18,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 15:18:18,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 15:18:18,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 15:18:18,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 15:18:18,367 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 15:18:18,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 15:18:18,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 15:18:18,367 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 15:18:18,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 15:18:18,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 15:18:18,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 15:18:18,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 15:18:18,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 15:18:18,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 15:18:18,371 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 15:18:18,371 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 15:18:18,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 15:18:18,372 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 15:18:18,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 15:18:18,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 15:18:18,372 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 15:18:18,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 15:18:18,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:18:18,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 15:18:18,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 15:18:18,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 15:18:18,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 15:18:18,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 15:18:18,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 15:18:18,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 15:18:18,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 15:18:18,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 15:18:18,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d08db41ae0d7ec8078cc06035e9e84ddb6f4cbeccb0dd0eb818a13f85c4c66c1 [2024-10-12 15:18:18,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 15:18:18,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 15:18:18,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 15:18:18,617 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 15:18:18,618 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 15:18:18,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label18.c [2024-10-12 15:18:19,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 15:18:20,098 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 15:18:20,099 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label18.c [2024-10-12 15:18:20,114 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e132198/298cdaf3bcaa4158a78f67c6c743e821/FLAG1ca63984b [2024-10-12 15:18:20,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e132198/298cdaf3bcaa4158a78f67c6c743e821 [2024-10-12 15:18:20,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 15:18:20,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 15:18:20,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 15:18:20,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 15:18:20,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 15:18:20,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:20,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fecb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20, skipping insertion in model container [2024-10-12 15:18:20,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:20,177 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 15:18:20,606 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label18.c[61636,61649] [2024-10-12 15:18:20,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:18:20,641 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 15:18:20,800 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label18.c[61636,61649] [2024-10-12 15:18:20,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:18:20,824 INFO L204 MainTranslator]: Completed translation [2024-10-12 15:18:20,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20 WrapperNode [2024-10-12 15:18:20,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 15:18:20,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 15:18:20,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 15:18:20,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 15:18:20,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:20,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:20,926 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-12 15:18:20,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 15:18:20,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 15:18:20,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 15:18:20,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 15:18:20,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:20,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:20,944 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:20,965 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 15:18:20,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:20,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:20,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:21,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:21,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:21,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:21,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 15:18:21,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 15:18:21,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 15:18:21,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 15:18:21,034 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (1/1) ... [2024-10-12 15:18:21,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:18:21,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:21,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 15:18:21,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 15:18:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 15:18:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 15:18:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 15:18:21,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 15:18:21,166 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 15:18:21,167 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 15:18:22,424 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-12 15:18:22,425 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 15:18:22,465 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 15:18:22,465 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 15:18:22,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:18:22 BoogieIcfgContainer [2024-10-12 15:18:22,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 15:18:22,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 15:18:22,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 15:18:22,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 15:18:22,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:18:20" (1/3) ... [2024-10-12 15:18:22,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16876cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:18:22, skipping insertion in model container [2024-10-12 15:18:22,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:18:20" (2/3) ... [2024-10-12 15:18:22,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16876cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:18:22, skipping insertion in model container [2024-10-12 15:18:22,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:18:22" (3/3) ... [2024-10-12 15:18:22,472 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label18.c [2024-10-12 15:18:22,485 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 15:18:22,486 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 15:18:22,543 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 15:18:22,549 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;@3a90b043, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 15:18:22,549 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 15:18:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-10-12 15:18:22,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:22,571 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:22,571 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:22,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:22,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1313278425, now seen corresponding path program 1 times [2024-10-12 15:18:22,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:22,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293718737] [2024-10-12 15:18:22,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:22,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:18:23,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:23,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293718737] [2024-10-12 15:18:23,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293718737] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:23,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:23,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:18:23,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143904399] [2024-10-12 15:18:23,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:23,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 15:18:23,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:23,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 15:18:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:18:23,116 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:23,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:23,164 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-12 15:18:23,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 15:18:23,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2024-10-12 15:18:23,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:23,178 INFO L225 Difference]: With dead ends: 479 [2024-10-12 15:18:23,178 INFO L226 Difference]: Without dead ends: 238 [2024-10-12 15:18:23,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:18:23,184 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:23,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:18:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-12 15:18:23,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-12 15:18:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-12 15:18:23,228 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 202 [2024-10-12 15:18:23,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:23,229 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-12 15:18:23,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-12 15:18:23,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-10-12 15:18:23,234 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:23,235 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:23,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 15:18:23,236 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:23,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:23,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1857362597, now seen corresponding path program 1 times [2024-10-12 15:18:23,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:23,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108444055] [2024-10-12 15:18:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:23,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:18:23,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:23,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108444055] [2024-10-12 15:18:23,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108444055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:23,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:23,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:18:23,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915004703] [2024-10-12 15:18:23,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:23,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:23,760 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:24,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:24,529 INFO L93 Difference]: Finished difference Result 680 states and 1128 transitions. [2024-10-12 15:18:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:24,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2024-10-12 15:18:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:24,533 INFO L225 Difference]: With dead ends: 680 [2024-10-12 15:18:24,533 INFO L226 Difference]: Without dead ends: 443 [2024-10-12 15:18:24,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:24,534 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:24,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 184 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:18:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-10-12 15:18:24,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 442. [2024-10-12 15:18:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.4195011337868482) internal successors, (626), 441 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:24,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 626 transitions. [2024-10-12 15:18:24,549 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 626 transitions. Word has length 202 [2024-10-12 15:18:24,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:24,550 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 626 transitions. [2024-10-12 15:18:24,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 626 transitions. [2024-10-12 15:18:24,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-10-12 15:18:24,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:24,553 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 15:18:24,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 15:18:24,554 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:24,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:24,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1616440922, now seen corresponding path program 1 times [2024-10-12 15:18:24,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:24,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974188216] [2024-10-12 15:18:24,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:24,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:18:24,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:24,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974188216] [2024-10-12 15:18:24,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974188216] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:24,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:24,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:18:24,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68583431] [2024-10-12 15:18:24,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:24,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:24,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:24,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:24,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:24,726 INFO L87 Difference]: Start difference. First operand 442 states and 626 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:25,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:25,388 INFO L93 Difference]: Finished difference Result 1309 states and 1860 transitions. [2024-10-12 15:18:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:25,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2024-10-12 15:18:25,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:25,392 INFO L225 Difference]: With dead ends: 1309 [2024-10-12 15:18:25,392 INFO L226 Difference]: Without dead ends: 868 [2024-10-12 15:18:25,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:25,396 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:25,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 90 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:18:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2024-10-12 15:18:25,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 854. [2024-10-12 15:18:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 1.388042203985932) internal successors, (1184), 853 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1184 transitions. [2024-10-12 15:18:25,436 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1184 transitions. Word has length 210 [2024-10-12 15:18:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:25,437 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 1184 transitions. [2024-10-12 15:18:25,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1184 transitions. [2024-10-12 15:18:25,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-10-12 15:18:25,440 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:25,441 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:25,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 15:18:25,441 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:25,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1407926298, now seen corresponding path program 1 times [2024-10-12 15:18:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:25,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931949495] [2024-10-12 15:18:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 15:18:25,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:25,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931949495] [2024-10-12 15:18:25,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931949495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:25,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:25,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:18:25,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432333626] [2024-10-12 15:18:25,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:25,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:25,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:25,765 INFO L87 Difference]: Start difference. First operand 854 states and 1184 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:26,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:26,468 INFO L93 Difference]: Finished difference Result 2546 states and 3534 transitions. [2024-10-12 15:18:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:26,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2024-10-12 15:18:26,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:26,473 INFO L225 Difference]: With dead ends: 2546 [2024-10-12 15:18:26,473 INFO L226 Difference]: Without dead ends: 1693 [2024-10-12 15:18:26,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:26,476 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:26,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 225 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:18:26,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2024-10-12 15:18:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1686. [2024-10-12 15:18:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1685 states have (on average 1.372700296735905) internal successors, (2313), 1685 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2313 transitions. [2024-10-12 15:18:26,502 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2313 transitions. Word has length 219 [2024-10-12 15:18:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:26,502 INFO L471 AbstractCegarLoop]: Abstraction has 1686 states and 2313 transitions. [2024-10-12 15:18:26,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2313 transitions. [2024-10-12 15:18:26,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-10-12 15:18:26,505 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:26,505 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:26,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 15:18:26,506 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:26,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:26,506 INFO L85 PathProgramCache]: Analyzing trace with hash -429705185, now seen corresponding path program 1 times [2024-10-12 15:18:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:26,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617772422] [2024-10-12 15:18:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:26,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:26,670 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:18:26,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:26,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617772422] [2024-10-12 15:18:26,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617772422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:26,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:26,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:18:26,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106422757] [2024-10-12 15:18:26,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:26,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:26,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:26,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:26,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:26,673 INFO L87 Difference]: Start difference. First operand 1686 states and 2313 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:27,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:27,385 INFO L93 Difference]: Finished difference Result 4189 states and 5943 transitions. [2024-10-12 15:18:27,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:27,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2024-10-12 15:18:27,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:27,393 INFO L225 Difference]: With dead ends: 4189 [2024-10-12 15:18:27,394 INFO L226 Difference]: Without dead ends: 2504 [2024-10-12 15:18:27,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:27,397 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 236 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:27,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 402 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:18:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2024-10-12 15:18:27,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2501. [2024-10-12 15:18:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2501 states, 2500 states have (on average 1.3104) internal successors, (3276), 2500 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:27,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3276 transitions. [2024-10-12 15:18:27,429 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3276 transitions. Word has length 222 [2024-10-12 15:18:27,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:27,430 INFO L471 AbstractCegarLoop]: Abstraction has 2501 states and 3276 transitions. [2024-10-12 15:18:27,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:27,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3276 transitions. [2024-10-12 15:18:27,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-10-12 15:18:27,434 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:27,434 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2024-10-12 15:18:27,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 15:18:27,434 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:27,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1384632627, now seen corresponding path program 1 times [2024-10-12 15:18:27,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:27,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886406707] [2024-10-12 15:18:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:27,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:18:27,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:27,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886406707] [2024-10-12 15:18:27,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886406707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:27,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:27,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:18:27,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426571265] [2024-10-12 15:18:27,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:27,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:27,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:27,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:27,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:27,654 INFO L87 Difference]: Start difference. First operand 2501 states and 3276 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:28,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:28,251 INFO L93 Difference]: Finished difference Result 5826 states and 7689 transitions. [2024-10-12 15:18:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:28,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 230 [2024-10-12 15:18:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:28,263 INFO L225 Difference]: With dead ends: 5826 [2024-10-12 15:18:28,264 INFO L226 Difference]: Without dead ends: 3326 [2024-10-12 15:18:28,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:28,267 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 214 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:28,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 361 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:18:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2024-10-12 15:18:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3316. [2024-10-12 15:18:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3316 states, 3315 states have (on average 1.2832579185520363) internal successors, (4254), 3315 states have internal predecessors, (4254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 4254 transitions. [2024-10-12 15:18:28,314 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 4254 transitions. Word has length 230 [2024-10-12 15:18:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:28,315 INFO L471 AbstractCegarLoop]: Abstraction has 3316 states and 4254 transitions. [2024-10-12 15:18:28,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 4254 transitions. [2024-10-12 15:18:28,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-10-12 15:18:28,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:28,322 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2024-10-12 15:18:28,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 15:18:28,322 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:28,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1877991693, now seen corresponding path program 1 times [2024-10-12 15:18:28,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:28,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894492308] [2024-10-12 15:18:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:28,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:18:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894492308] [2024-10-12 15:18:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894492308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:28,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:28,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:18:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005573454] [2024-10-12 15:18:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:28,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:28,581 INFO L87 Difference]: Start difference. First operand 3316 states and 4254 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:29,230 INFO L93 Difference]: Finished difference Result 9080 states and 11774 transitions. [2024-10-12 15:18:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:29,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 237 [2024-10-12 15:18:29,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:29,243 INFO L225 Difference]: With dead ends: 9080 [2024-10-12 15:18:29,244 INFO L226 Difference]: Without dead ends: 5765 [2024-10-12 15:18:29,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:29,248 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 202 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:29,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 383 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:18:29,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5765 states. [2024-10-12 15:18:29,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5765 to 5759. [2024-10-12 15:18:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5759 states, 5758 states have (on average 1.2401875651267802) internal successors, (7141), 5758 states have internal predecessors, (7141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5759 states to 5759 states and 7141 transitions. [2024-10-12 15:18:29,363 INFO L78 Accepts]: Start accepts. Automaton has 5759 states and 7141 transitions. Word has length 237 [2024-10-12 15:18:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:29,364 INFO L471 AbstractCegarLoop]: Abstraction has 5759 states and 7141 transitions. [2024-10-12 15:18:29,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:29,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5759 states and 7141 transitions. [2024-10-12 15:18:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-10-12 15:18:29,371 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:29,371 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:29,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 15:18:29,372 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:29,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:29,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1168852920, now seen corresponding path program 1 times [2024-10-12 15:18:29,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624891883] [2024-10-12 15:18:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:29,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:18:29,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:29,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624891883] [2024-10-12 15:18:29,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624891883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:29,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:29,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:18:29,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055293337] [2024-10-12 15:18:29,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:29,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:18:29,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:18:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:18:29,613 INFO L87 Difference]: Start difference. First operand 5759 states and 7141 transitions. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:30,532 INFO L93 Difference]: Finished difference Result 11543 states and 14333 transitions. [2024-10-12 15:18:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:18:30,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 246 [2024-10-12 15:18:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:30,545 INFO L225 Difference]: With dead ends: 11543 [2024-10-12 15:18:30,545 INFO L226 Difference]: Without dead ends: 5785 [2024-10-12 15:18:30,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:18:30,551 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 405 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:30,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 196 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 15:18:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2024-10-12 15:18:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 4947. [2024-10-12 15:18:30,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4947 states, 4946 states have (on average 1.2460574201374848) internal successors, (6163), 4946 states have internal predecessors, (6163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 6163 transitions. [2024-10-12 15:18:30,610 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 6163 transitions. Word has length 246 [2024-10-12 15:18:30,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:30,611 INFO L471 AbstractCegarLoop]: Abstraction has 4947 states and 6163 transitions. [2024-10-12 15:18:30,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 6163 transitions. [2024-10-12 15:18:30,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-10-12 15:18:30,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:30,618 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:30,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 15:18:30,618 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:30,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:30,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1513320667, now seen corresponding path program 1 times [2024-10-12 15:18:30,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:30,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110855842] [2024-10-12 15:18:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:30,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-12 15:18:30,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:30,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110855842] [2024-10-12 15:18:30,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110855842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:30,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:30,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:18:30,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638268354] [2024-10-12 15:18:30,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:30,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:30,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:30,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:30,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:30,869 INFO L87 Difference]: Start difference. First operand 4947 states and 6163 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:31,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:31,438 INFO L93 Difference]: Finished difference Result 14392 states and 17934 transitions. [2024-10-12 15:18:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:31,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 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 250 [2024-10-12 15:18:31,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:31,458 INFO L225 Difference]: With dead ends: 14392 [2024-10-12 15:18:31,459 INFO L226 Difference]: Without dead ends: 9446 [2024-10-12 15:18:31,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:31,464 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 218 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:31,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 194 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:18:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9446 states. [2024-10-12 15:18:31,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9446 to 9435. [2024-10-12 15:18:31,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9435 states, 9434 states have (on average 1.2218571125715496) internal successors, (11527), 9434 states have internal predecessors, (11527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:31,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9435 states to 9435 states and 11527 transitions. [2024-10-12 15:18:31,603 INFO L78 Accepts]: Start accepts. Automaton has 9435 states and 11527 transitions. Word has length 250 [2024-10-12 15:18:31,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:31,603 INFO L471 AbstractCegarLoop]: Abstraction has 9435 states and 11527 transitions. [2024-10-12 15:18:31,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand 9435 states and 11527 transitions. [2024-10-12 15:18:31,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-12 15:18:31,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:31,619 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:31,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 15:18:31,619 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:31,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash -141193175, now seen corresponding path program 1 times [2024-10-12 15:18:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:31,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851970243] [2024-10-12 15:18:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 15:18:31,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:31,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851970243] [2024-10-12 15:18:31,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851970243] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:18:31,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033048155] [2024-10-12 15:18:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:31,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:31,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:31,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:18:31,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 15:18:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:32,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:18:32,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:18:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 15:18:32,327 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:18:32,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033048155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:32,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:18:32,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:18:32,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172493466] [2024-10-12 15:18:32,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:32,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:32,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:32,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:32,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:32,330 INFO L87 Difference]: Start difference. First operand 9435 states and 11527 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:32,957 INFO L93 Difference]: Finished difference Result 25188 states and 30910 transitions. [2024-10-12 15:18:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:32,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 253 [2024-10-12 15:18:32,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:32,994 INFO L225 Difference]: With dead ends: 25188 [2024-10-12 15:18:32,995 INFO L226 Difference]: Without dead ends: 16160 [2024-10-12 15:18:33,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:33,006 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 52 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:33,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 173 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:18:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16160 states. [2024-10-12 15:18:33,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16160 to 15343. [2024-10-12 15:18:33,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15343 states, 15342 states have (on average 1.2000391083300743) internal successors, (18411), 15342 states have internal predecessors, (18411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15343 states to 15343 states and 18411 transitions. [2024-10-12 15:18:33,183 INFO L78 Accepts]: Start accepts. Automaton has 15343 states and 18411 transitions. Word has length 253 [2024-10-12 15:18:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:33,183 INFO L471 AbstractCegarLoop]: Abstraction has 15343 states and 18411 transitions. [2024-10-12 15:18:33,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:33,184 INFO L276 IsEmpty]: Start isEmpty. Operand 15343 states and 18411 transitions. [2024-10-12 15:18:33,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-10-12 15:18:33,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:33,200 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:33,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 15:18:33,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 15:18:33,405 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:33,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1551105241, now seen corresponding path program 1 times [2024-10-12 15:18:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:33,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739914777] [2024-10-12 15:18:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:33,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:18:33,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:33,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739914777] [2024-10-12 15:18:33,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739914777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:33,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:33,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:18:33,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948745231] [2024-10-12 15:18:33,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:33,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:33,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:33,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:33,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:33,821 INFO L87 Difference]: Start difference. First operand 15343 states and 18411 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:34,409 INFO L93 Difference]: Finished difference Result 30077 states and 36113 transitions. [2024-10-12 15:18:34,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:34,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2024-10-12 15:18:34,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:34,428 INFO L225 Difference]: With dead ends: 30077 [2024-10-12 15:18:34,428 INFO L226 Difference]: Without dead ends: 15141 [2024-10-12 15:18:34,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:34,441 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 133 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:34,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 197 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:18:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15141 states. [2024-10-12 15:18:34,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15141 to 15140. [2024-10-12 15:18:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15140 states, 15139 states have (on average 1.1957196644428298) internal successors, (18102), 15139 states have internal predecessors, (18102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15140 states to 15140 states and 18102 transitions. [2024-10-12 15:18:34,582 INFO L78 Accepts]: Start accepts. Automaton has 15140 states and 18102 transitions. Word has length 276 [2024-10-12 15:18:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:34,582 INFO L471 AbstractCegarLoop]: Abstraction has 15140 states and 18102 transitions. [2024-10-12 15:18:34,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 15140 states and 18102 transitions. [2024-10-12 15:18:34,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-10-12 15:18:34,601 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:34,601 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-10-12 15:18:34,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 15:18:34,602 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:34,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:34,602 INFO L85 PathProgramCache]: Analyzing trace with hash 62189626, now seen corresponding path program 1 times [2024-10-12 15:18:34,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:34,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216779983] [2024-10-12 15:18:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:34,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-12 15:18:34,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:34,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216779983] [2024-10-12 15:18:34,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216779983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:34,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:34,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:18:34,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266328563] [2024-10-12 15:18:34,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:34,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:34,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:34,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:34,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:34,939 INFO L87 Difference]: Start difference. First operand 15140 states and 18102 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:35,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:35,603 INFO L93 Difference]: Finished difference Result 34998 states and 42357 transitions. [2024-10-12 15:18:35,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:35,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 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 280 [2024-10-12 15:18:35,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:35,625 INFO L225 Difference]: With dead ends: 34998 [2024-10-12 15:18:35,625 INFO L226 Difference]: Without dead ends: 20468 [2024-10-12 15:18:35,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:35,639 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:35,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 242 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:18:35,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20468 states. [2024-10-12 15:18:35,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20468 to 20437. [2024-10-12 15:18:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20437 states, 20436 states have (on average 1.2137893912703073) internal successors, (24805), 20436 states have internal predecessors, (24805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20437 states to 20437 states and 24805 transitions. [2024-10-12 15:18:35,819 INFO L78 Accepts]: Start accepts. Automaton has 20437 states and 24805 transitions. Word has length 280 [2024-10-12 15:18:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:35,819 INFO L471 AbstractCegarLoop]: Abstraction has 20437 states and 24805 transitions. [2024-10-12 15:18:35,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 20437 states and 24805 transitions. [2024-10-12 15:18:35,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-10-12 15:18:35,839 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:35,840 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 15:18:35,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 15:18:35,840 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:35,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:35,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1678338696, now seen corresponding path program 1 times [2024-10-12 15:18:35,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:35,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495962159] [2024-10-12 15:18:35,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:35,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 92 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-12 15:18:36,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:36,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495962159] [2024-10-12 15:18:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495962159] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:18:36,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68102858] [2024-10-12 15:18:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:36,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:36,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:36,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:18:36,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 15:18:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:36,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:18:36,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:18:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 15:18:36,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:18:36,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68102858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:36,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:18:36,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 15:18:36,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738328807] [2024-10-12 15:18:36,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:36,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:36,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:36,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:36,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:36,320 INFO L87 Difference]: Start difference. First operand 20437 states and 24805 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:36,643 INFO L93 Difference]: Finished difference Result 38170 states and 46444 transitions. [2024-10-12 15:18:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:36,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 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 283 [2024-10-12 15:18:36,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:36,663 INFO L225 Difference]: With dead ends: 38170 [2024-10-12 15:18:36,663 INFO L226 Difference]: Without dead ends: 18750 [2024-10-12 15:18:36,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:36,677 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:36,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 29 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:18:36,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18750 states. [2024-10-12 15:18:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18750 to 18750. [2024-10-12 15:18:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18750 states, 18749 states have (on average 1.1911568616992907) internal successors, (22333), 18749 states have internal predecessors, (22333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18750 states to 18750 states and 22333 transitions. [2024-10-12 15:18:36,893 INFO L78 Accepts]: Start accepts. Automaton has 18750 states and 22333 transitions. Word has length 283 [2024-10-12 15:18:36,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:36,893 INFO L471 AbstractCegarLoop]: Abstraction has 18750 states and 22333 transitions. [2024-10-12 15:18:36,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:36,893 INFO L276 IsEmpty]: Start isEmpty. Operand 18750 states and 22333 transitions. [2024-10-12 15:18:36,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-10-12 15:18:36,907 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:36,907 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:36,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 15:18:37,108 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,SelfDestructingSolverStorable12 [2024-10-12 15:18:37,108 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:37,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:37,109 INFO L85 PathProgramCache]: Analyzing trace with hash 175639812, now seen corresponding path program 1 times [2024-10-12 15:18:37,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:37,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702381218] [2024-10-12 15:18:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:37,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 15:18:37,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:37,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702381218] [2024-10-12 15:18:37,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702381218] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:37,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:37,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:18:37,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024659282] [2024-10-12 15:18:37,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:37,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:18:37,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:37,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:18:37,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:18:37,346 INFO L87 Difference]: Start difference. First operand 18750 states and 22333 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:38,073 INFO L93 Difference]: Finished difference Result 40544 states and 48862 transitions. [2024-10-12 15:18:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:18:38,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 303 [2024-10-12 15:18:38,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:38,095 INFO L225 Difference]: With dead ends: 40544 [2024-10-12 15:18:38,095 INFO L226 Difference]: Without dead ends: 21391 [2024-10-12 15:18:38,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:18:38,108 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 566 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:38,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 55 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:18:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21391 states. [2024-10-12 15:18:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21391 to 21390. [2024-10-12 15:18:38,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21390 states, 21389 states have (on average 1.1180980878021414) internal successors, (23915), 21389 states have internal predecessors, (23915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21390 states to 21390 states and 23915 transitions. [2024-10-12 15:18:38,305 INFO L78 Accepts]: Start accepts. Automaton has 21390 states and 23915 transitions. Word has length 303 [2024-10-12 15:18:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:38,305 INFO L471 AbstractCegarLoop]: Abstraction has 21390 states and 23915 transitions. [2024-10-12 15:18:38,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 21390 states and 23915 transitions. [2024-10-12 15:18:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-10-12 15:18:38,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:38,320 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:38,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 15:18:38,320 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:38,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:38,321 INFO L85 PathProgramCache]: Analyzing trace with hash -146089621, now seen corresponding path program 1 times [2024-10-12 15:18:38,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:38,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914371395] [2024-10-12 15:18:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:38,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:18:38,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:38,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914371395] [2024-10-12 15:18:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914371395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:38,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:38,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:18:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646629323] [2024-10-12 15:18:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:38,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:38,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:38,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:38,565 INFO L87 Difference]: Start difference. First operand 21390 states and 23915 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:39,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:39,110 INFO L93 Difference]: Finished difference Result 45217 states and 51088 transitions. [2024-10-12 15:18:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:39,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 305 [2024-10-12 15:18:39,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:39,136 INFO L225 Difference]: With dead ends: 45217 [2024-10-12 15:18:39,136 INFO L226 Difference]: Without dead ends: 24845 [2024-10-12 15:18:39,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:39,154 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 238 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:39,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 299 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:18:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24845 states. [2024-10-12 15:18:39,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24845 to 24841. [2024-10-12 15:18:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24841 states, 24840 states have (on average 1.1308373590982286) internal successors, (28090), 24840 states have internal predecessors, (28090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:39,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24841 states to 24841 states and 28090 transitions. [2024-10-12 15:18:39,488 INFO L78 Accepts]: Start accepts. Automaton has 24841 states and 28090 transitions. Word has length 305 [2024-10-12 15:18:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:39,488 INFO L471 AbstractCegarLoop]: Abstraction has 24841 states and 28090 transitions. [2024-10-12 15:18:39,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:39,489 INFO L276 IsEmpty]: Start isEmpty. Operand 24841 states and 28090 transitions. [2024-10-12 15:18:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-10-12 15:18:39,509 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:39,509 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:18:39,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 15:18:39,510 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:39,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:39,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1658292738, now seen corresponding path program 1 times [2024-10-12 15:18:39,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:39,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192245426] [2024-10-12 15:18:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:39,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-12 15:18:39,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192245426] [2024-10-12 15:18:39,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192245426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:39,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:39,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:18:39,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765205832] [2024-10-12 15:18:39,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:39,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:39,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:39,875 INFO L87 Difference]: Start difference. First operand 24841 states and 28090 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:40,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:40,451 INFO L93 Difference]: Finished difference Result 54979 states and 62306 transitions. [2024-10-12 15:18:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:40,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2024-10-12 15:18:40,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:40,479 INFO L225 Difference]: With dead ends: 54979 [2024-10-12 15:18:40,479 INFO L226 Difference]: Without dead ends: 31359 [2024-10-12 15:18:40,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:40,493 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 212 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:40,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 130 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:18:40,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31359 states. [2024-10-12 15:18:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31359 to 31356. [2024-10-12 15:18:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31356 states, 31355 states have (on average 1.1323552862382396) internal successors, (35505), 31355 states have internal predecessors, (35505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:40,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31356 states to 31356 states and 35505 transitions. [2024-10-12 15:18:40,761 INFO L78 Accepts]: Start accepts. Automaton has 31356 states and 35505 transitions. Word has length 310 [2024-10-12 15:18:40,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:40,762 INFO L471 AbstractCegarLoop]: Abstraction has 31356 states and 35505 transitions. [2024-10-12 15:18:40,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:40,762 INFO L276 IsEmpty]: Start isEmpty. Operand 31356 states and 35505 transitions. [2024-10-12 15:18:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-10-12 15:18:40,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:40,778 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:40,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 15:18:40,779 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:40,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:40,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1140147561, now seen corresponding path program 1 times [2024-10-12 15:18:40,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:40,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263547441] [2024-10-12 15:18:40,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:40,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:18:40,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:40,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263547441] [2024-10-12 15:18:40,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263547441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:40,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:40,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:18:40,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486196852] [2024-10-12 15:18:40,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:40,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:40,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:40,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:40,903 INFO L87 Difference]: Start difference. First operand 31356 states and 35505 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:41,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:41,418 INFO L93 Difference]: Finished difference Result 72258 states and 82137 transitions. [2024-10-12 15:18:41,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:41,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 317 [2024-10-12 15:18:41,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:41,461 INFO L225 Difference]: With dead ends: 72258 [2024-10-12 15:18:41,461 INFO L226 Difference]: Without dead ends: 42123 [2024-10-12 15:18:41,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:41,483 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 208 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:41,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 319 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:18:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42123 states. [2024-10-12 15:18:41,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42123 to 41710. [2024-10-12 15:18:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41710 states, 41709 states have (on average 1.1140760986837372) internal successors, (46467), 41709 states have internal predecessors, (46467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41710 states to 41710 states and 46467 transitions. [2024-10-12 15:18:41,933 INFO L78 Accepts]: Start accepts. Automaton has 41710 states and 46467 transitions. Word has length 317 [2024-10-12 15:18:41,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:41,934 INFO L471 AbstractCegarLoop]: Abstraction has 41710 states and 46467 transitions. [2024-10-12 15:18:41,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 41710 states and 46467 transitions. [2024-10-12 15:18:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-10-12 15:18:41,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:41,958 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:18:41,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 15:18:41,958 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:41,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:41,958 INFO L85 PathProgramCache]: Analyzing trace with hash 615792565, now seen corresponding path program 1 times [2024-10-12 15:18:41,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:41,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021580879] [2024-10-12 15:18:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:41,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 15:18:42,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:42,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021580879] [2024-10-12 15:18:42,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021580879] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:42,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:42,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:18:42,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986795652] [2024-10-12 15:18:42,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:42,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:18:42,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:42,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:18:42,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:18:42,174 INFO L87 Difference]: Start difference. First operand 41710 states and 46467 transitions. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:42,945 INFO L93 Difference]: Finished difference Result 74501 states and 82953 transitions. [2024-10-12 15:18:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:18:42,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 323 [2024-10-12 15:18:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:42,991 INFO L225 Difference]: With dead ends: 74501 [2024-10-12 15:18:42,992 INFO L226 Difference]: Without dead ends: 42963 [2024-10-12 15:18:43,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:18:43,017 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 329 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:43,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 110 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:18:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42963 states. [2024-10-12 15:18:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42963 to 42529. [2024-10-12 15:18:43,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42529 states, 42528 states have (on average 1.1131254702784048) internal successors, (47339), 42528 states have internal predecessors, (47339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42529 states to 42529 states and 47339 transitions. [2024-10-12 15:18:43,788 INFO L78 Accepts]: Start accepts. Automaton has 42529 states and 47339 transitions. Word has length 323 [2024-10-12 15:18:43,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:43,789 INFO L471 AbstractCegarLoop]: Abstraction has 42529 states and 47339 transitions. [2024-10-12 15:18:43,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 42529 states and 47339 transitions. [2024-10-12 15:18:43,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-10-12 15:18:43,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:43,821 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:18:43,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 15:18:43,822 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:43,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:43,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1074496770, now seen corresponding path program 1 times [2024-10-12 15:18:43,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:43,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864012121] [2024-10-12 15:18:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:43,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:18:44,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864012121] [2024-10-12 15:18:44,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864012121] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:18:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471771583] [2024-10-12 15:18:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:44,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:44,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:44,314 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:18:44,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 15:18:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:44,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:18:44,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:18:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-10-12 15:18:44,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:18:44,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471771583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:44,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:18:44,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 15:18:44,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255164218] [2024-10-12 15:18:44,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:44,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:44,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:44,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:44,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:44,715 INFO L87 Difference]: Start difference. First operand 42529 states and 47339 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:45,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:45,329 INFO L93 Difference]: Finished difference Result 81201 states and 90523 transitions. [2024-10-12 15:18:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:45,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 334 [2024-10-12 15:18:45,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:45,377 INFO L225 Difference]: With dead ends: 81201 [2024-10-12 15:18:45,377 INFO L226 Difference]: Without dead ends: 40906 [2024-10-12 15:18:45,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:45,389 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 52 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:45,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 81 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:18:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40906 states. [2024-10-12 15:18:45,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40906 to 37454. [2024-10-12 15:18:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37454 states, 37453 states have (on average 1.0978826796251302) internal successors, (41119), 37453 states have internal predecessors, (41119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37454 states to 37454 states and 41119 transitions. [2024-10-12 15:18:45,876 INFO L78 Accepts]: Start accepts. Automaton has 37454 states and 41119 transitions. Word has length 334 [2024-10-12 15:18:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:45,876 INFO L471 AbstractCegarLoop]: Abstraction has 37454 states and 41119 transitions. [2024-10-12 15:18:45,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 37454 states and 41119 transitions. [2024-10-12 15:18:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-10-12 15:18:45,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:45,910 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:45,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 15:18:46,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:46,111 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:46,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1183516497, now seen corresponding path program 1 times [2024-10-12 15:18:46,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:46,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643037177] [2024-10-12 15:18:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:46,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-10-12 15:18:46,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:46,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643037177] [2024-10-12 15:18:46,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643037177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:46,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:46,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:18:46,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490596517] [2024-10-12 15:18:46,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:46,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:46,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:46,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:46,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:46,692 INFO L87 Difference]: Start difference. First operand 37454 states and 41119 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:47,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:47,274 INFO L93 Difference]: Finished difference Result 72274 states and 79396 transitions. [2024-10-12 15:18:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:47,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 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 377 [2024-10-12 15:18:47,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:47,319 INFO L225 Difference]: With dead ends: 72274 [2024-10-12 15:18:47,319 INFO L226 Difference]: Without dead ends: 44180 [2024-10-12 15:18:47,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:47,343 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 159 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:47,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 135 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:18:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44180 states. [2024-10-12 15:18:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44180 to 44174. [2024-10-12 15:18:47,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44174 states, 44173 states have (on average 1.0956013854617075) internal successors, (48396), 44173 states have internal predecessors, (48396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44174 states to 44174 states and 48396 transitions. [2024-10-12 15:18:47,833 INFO L78 Accepts]: Start accepts. Automaton has 44174 states and 48396 transitions. Word has length 377 [2024-10-12 15:18:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:47,834 INFO L471 AbstractCegarLoop]: Abstraction has 44174 states and 48396 transitions. [2024-10-12 15:18:47,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 44174 states and 48396 transitions. [2024-10-12 15:18:47,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-10-12 15:18:47,859 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:47,859 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:47,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 15:18:47,859 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:47,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:47,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2118200640, now seen corresponding path program 1 times [2024-10-12 15:18:47,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:47,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649404383] [2024-10-12 15:18:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-10-12 15:18:48,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:48,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649404383] [2024-10-12 15:18:48,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649404383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:48,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:48,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:18:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010548513] [2024-10-12 15:18:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:48,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:18:48,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:48,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:18:48,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:18:48,549 INFO L87 Difference]: Start difference. First operand 44174 states and 48396 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:49,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:49,322 INFO L93 Difference]: Finished difference Result 87141 states and 95540 transitions. [2024-10-12 15:18:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:18:49,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 384 [2024-10-12 15:18:49,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:49,369 INFO L225 Difference]: With dead ends: 87141 [2024-10-12 15:18:49,369 INFO L226 Difference]: Without dead ends: 45404 [2024-10-12 15:18:49,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:18:49,393 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 500 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:49,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 105 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:18:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45404 states. [2024-10-12 15:18:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45404 to 44991. [2024-10-12 15:18:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44991 states, 44990 states have (on average 1.0946654812180485) internal successors, (49249), 44990 states have internal predecessors, (49249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44991 states to 44991 states and 49249 transitions. [2024-10-12 15:18:49,988 INFO L78 Accepts]: Start accepts. Automaton has 44991 states and 49249 transitions. Word has length 384 [2024-10-12 15:18:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:49,988 INFO L471 AbstractCegarLoop]: Abstraction has 44991 states and 49249 transitions. [2024-10-12 15:18:49,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 44991 states and 49249 transitions. [2024-10-12 15:18:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-10-12 15:18:50,016 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:50,016 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:50,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 15:18:50,017 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:50,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash -561846913, now seen corresponding path program 1 times [2024-10-12 15:18:50,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:50,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871298834] [2024-10-12 15:18:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:50,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 183 proven. 6 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-10-12 15:18:50,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:50,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871298834] [2024-10-12 15:18:50,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871298834] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:18:50,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244663843] [2024-10-12 15:18:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:50,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:50,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:50,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:18:50,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 15:18:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:50,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:18:50,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:18:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-10-12 15:18:50,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:18:50,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244663843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:50,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:18:50,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:18:50,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570623401] [2024-10-12 15:18:50,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:50,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:50,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:50,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:50,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:50,679 INFO L87 Difference]: Start difference. First operand 44991 states and 49249 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:51,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:51,318 INFO L93 Difference]: Finished difference Result 85097 states and 93211 transitions. [2024-10-12 15:18:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:51,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 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 432 [2024-10-12 15:18:51,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:51,362 INFO L225 Difference]: With dead ends: 85097 [2024-10-12 15:18:51,362 INFO L226 Difference]: Without dead ends: 42547 [2024-10-12 15:18:51,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:51,394 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 216 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:51,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 80 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:18:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42547 states. [2024-10-12 15:18:51,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42547 to 40503. [2024-10-12 15:18:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40503 states, 40502 states have (on average 1.083724260530344) internal successors, (43893), 40502 states have internal predecessors, (43893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40503 states to 40503 states and 43893 transitions. [2024-10-12 15:18:51,973 INFO L78 Accepts]: Start accepts. Automaton has 40503 states and 43893 transitions. Word has length 432 [2024-10-12 15:18:51,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:51,974 INFO L471 AbstractCegarLoop]: Abstraction has 40503 states and 43893 transitions. [2024-10-12 15:18:51,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:51,974 INFO L276 IsEmpty]: Start isEmpty. Operand 40503 states and 43893 transitions. [2024-10-12 15:18:51,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-10-12 15:18:52,000 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:52,000 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:52,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 15:18:52,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:52,201 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:52,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:52,201 INFO L85 PathProgramCache]: Analyzing trace with hash -832725514, now seen corresponding path program 1 times [2024-10-12 15:18:52,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:52,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977341212] [2024-10-12 15:18:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:52,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 147 proven. 6 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-10-12 15:18:52,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:52,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977341212] [2024-10-12 15:18:52,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977341212] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:18:52,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168851616] [2024-10-12 15:18:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:52,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:52,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:52,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:18:52,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 15:18:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:52,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:18:52,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:18:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 426 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-12 15:18:52,912 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:18:52,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168851616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:52,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:18:52,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:18:52,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510500304] [2024-10-12 15:18:52,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:52,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:52,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:52,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:52,914 INFO L87 Difference]: Start difference. First operand 40503 states and 43893 transitions. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:53,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:53,500 INFO L93 Difference]: Finished difference Result 78163 states and 84732 transitions. [2024-10-12 15:18:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:53,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 467 [2024-10-12 15:18:53,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:53,543 INFO L225 Difference]: With dead ends: 78163 [2024-10-12 15:18:53,543 INFO L226 Difference]: Without dead ends: 39898 [2024-10-12 15:18:53,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:53,564 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 159 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:53,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 108 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:18:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39898 states. [2024-10-12 15:18:53,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39898 to 36644. [2024-10-12 15:18:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36644 states, 36643 states have (on average 1.0686625003411292) internal successors, (39159), 36643 states have internal predecessors, (39159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36644 states to 36644 states and 39159 transitions. [2024-10-12 15:18:53,894 INFO L78 Accepts]: Start accepts. Automaton has 36644 states and 39159 transitions. Word has length 467 [2024-10-12 15:18:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:53,895 INFO L471 AbstractCegarLoop]: Abstraction has 36644 states and 39159 transitions. [2024-10-12 15:18:53,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:53,895 INFO L276 IsEmpty]: Start isEmpty. Operand 36644 states and 39159 transitions. [2024-10-12 15:18:53,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-10-12 15:18:53,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:53,918 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:18:53,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 15:18:54,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-12 15:18:54,118 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:54,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash 30565433, now seen corresponding path program 1 times [2024-10-12 15:18:54,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:54,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265422783] [2024-10-12 15:18:54,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:54,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 449 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-12 15:18:54,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:54,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265422783] [2024-10-12 15:18:54,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265422783] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:18:54,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617661564] [2024-10-12 15:18:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:54,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:54,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:54,590 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:18:54,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 15:18:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:54,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:18:54,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:18:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-10-12 15:18:54,992 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:18:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617661564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:54,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:18:54,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-12 15:18:54,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785731034] [2024-10-12 15:18:54,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:54,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:54,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:54,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:18:54,994 INFO L87 Difference]: Start difference. First operand 36644 states and 39159 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 2 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:55,359 INFO L93 Difference]: Finished difference Result 94873 states and 101343 transitions. [2024-10-12 15:18:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:55,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 2 states have internal predecessors, (332), 0 states have call successors, (0), 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 471 [2024-10-12 15:18:55,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:55,422 INFO L225 Difference]: With dead ends: 94873 [2024-10-12 15:18:55,422 INFO L226 Difference]: Without dead ends: 60467 [2024-10-12 15:18:55,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:18:55,456 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 162 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:55,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 473 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:18:55,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60467 states. [2024-10-12 15:18:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60467 to 54756. [2024-10-12 15:18:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54756 states, 54755 states have (on average 1.065345630536024) internal successors, (58333), 54755 states have internal predecessors, (58333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54756 states to 54756 states and 58333 transitions. [2024-10-12 15:18:56,304 INFO L78 Accepts]: Start accepts. Automaton has 54756 states and 58333 transitions. Word has length 471 [2024-10-12 15:18:56,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:56,305 INFO L471 AbstractCegarLoop]: Abstraction has 54756 states and 58333 transitions. [2024-10-12 15:18:56,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 2 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:56,305 INFO L276 IsEmpty]: Start isEmpty. Operand 54756 states and 58333 transitions. [2024-10-12 15:18:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-10-12 15:18:56,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:56,329 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:56,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 15:18:56,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:56,530 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:56,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:56,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1919537038, now seen corresponding path program 1 times [2024-10-12 15:18:56,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:56,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56077148] [2024-10-12 15:18:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:56,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-10-12 15:18:56,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:56,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56077148] [2024-10-12 15:18:56,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56077148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:56,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:56,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:18:56,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443419158] [2024-10-12 15:18:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:56,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:56,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:56,949 INFO L87 Difference]: Start difference. First operand 54756 states and 58333 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:57,570 INFO L93 Difference]: Finished difference Result 121755 states and 129863 transitions. [2024-10-12 15:18:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:57,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 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 [2024-10-12 15:18:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:57,652 INFO L225 Difference]: With dead ends: 121755 [2024-10-12 15:18:57,652 INFO L226 Difference]: Without dead ends: 75134 [2024-10-12 15:18:57,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:18:57,688 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 114 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:57,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 115 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:18:57,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75134 states. [2024-10-12 15:18:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75134 to 73705. [2024-10-12 15:18:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73705 states, 73704 states have (on average 1.0674725930750026) internal successors, (78677), 73704 states have internal predecessors, (78677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:58,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73705 states to 73705 states and 78677 transitions. [2024-10-12 15:18:58,703 INFO L78 Accepts]: Start accepts. Automaton has 73705 states and 78677 transitions. Word has length 483 [2024-10-12 15:18:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:58,703 INFO L471 AbstractCegarLoop]: Abstraction has 73705 states and 78677 transitions. [2024-10-12 15:18:58,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:58,704 INFO L276 IsEmpty]: Start isEmpty. Operand 73705 states and 78677 transitions. [2024-10-12 15:18:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-10-12 15:18:58,736 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:58,736 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:58,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 15:18:58,736 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:58,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:58,737 INFO L85 PathProgramCache]: Analyzing trace with hash 302457533, now seen corresponding path program 1 times [2024-10-12 15:18:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:58,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027966194] [2024-10-12 15:18:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:58,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 278 proven. 6 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-10-12 15:19:00,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:19:00,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027966194] [2024-10-12 15:19:00,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027966194] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:19:00,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675603125] [2024-10-12 15:19:00,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:00,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:19:00,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:19:00,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:19:00,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 15:19:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:00,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:19:00,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:19:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-10-12 15:19:00,740 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:19:00,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675603125] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:19:00,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:19:00,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:19:00,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819923820] [2024-10-12 15:19:00,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:19:00,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:19:00,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:19:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:19:00,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:19:00,742 INFO L87 Difference]: Start difference. First operand 73705 states and 78677 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:19:01,222 INFO L93 Difference]: Finished difference Result 73725 states and 78703 transitions. [2024-10-12 15:19:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:19:01,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 490 [2024-10-12 15:19:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:19:01,295 INFO L225 Difference]: With dead ends: 73725 [2024-10-12 15:19:01,295 INFO L226 Difference]: Without dead ends: 73723 [2024-10-12 15:19:01,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:19:01,318 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:19:01,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 56 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:19:01,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73723 states. [2024-10-12 15:19:02,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73723 to 73705. [2024-10-12 15:19:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73705 states, 73704 states have (on average 1.0674590252903506) internal successors, (78676), 73704 states have internal predecessors, (78676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73705 states to 73705 states and 78676 transitions. [2024-10-12 15:19:02,136 INFO L78 Accepts]: Start accepts. Automaton has 73705 states and 78676 transitions. Word has length 490 [2024-10-12 15:19:02,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:19:02,137 INFO L471 AbstractCegarLoop]: Abstraction has 73705 states and 78676 transitions. [2024-10-12 15:19:02,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:02,137 INFO L276 IsEmpty]: Start isEmpty. Operand 73705 states and 78676 transitions. [2024-10-12 15:19:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-10-12 15:19:02,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:19:02,330 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-12 15:19:02,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 15:19:02,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:19:02,531 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:19:02,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:19:02,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1161339399, now seen corresponding path program 1 times [2024-10-12 15:19:02,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:19:02,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411778966] [2024-10-12 15:19:02,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:02,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:19:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 377 proven. 95 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-12 15:19:02,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:19:02,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411778966] [2024-10-12 15:19:02,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411778966] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:19:02,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146241540] [2024-10-12 15:19:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:02,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:19:02,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:19:02,872 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:19:02,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 15:19:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:03,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:19:03,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:19:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-12 15:19:03,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:19:03,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146241540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:19:03,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:19:03,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:19:03,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678127615] [2024-10-12 15:19:03,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:19:03,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:19:03,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:19:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:19:03,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:19:03,222 INFO L87 Difference]: Start difference. First operand 73705 states and 78676 transitions. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:03,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:19:03,846 INFO L93 Difference]: Finished difference Result 147425 states and 157503 transitions. [2024-10-12 15:19:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:19:03,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 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 491 [2024-10-12 15:19:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:19:03,923 INFO L225 Difference]: With dead ends: 147425 [2024-10-12 15:19:03,923 INFO L226 Difference]: Without dead ends: 74127 [2024-10-12 15:19:03,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:19:03,970 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 129 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:19:03,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 290 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:19:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74127 states. [2024-10-12 15:19:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74127 to 73697. [2024-10-12 15:19:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73697 states, 73696 states have (on average 1.066394376899696) internal successors, (78589), 73696 states have internal predecessors, (78589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73697 states to 73697 states and 78589 transitions. [2024-10-12 15:19:05,080 INFO L78 Accepts]: Start accepts. Automaton has 73697 states and 78589 transitions. Word has length 491 [2024-10-12 15:19:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:19:05,081 INFO L471 AbstractCegarLoop]: Abstraction has 73697 states and 78589 transitions. [2024-10-12 15:19:05,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 73697 states and 78589 transitions. [2024-10-12 15:19:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-10-12 15:19:05,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:19:05,136 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:19:05,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 15:19:05,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-12 15:19:05,337 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:19:05,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:19:05,338 INFO L85 PathProgramCache]: Analyzing trace with hash -541163721, now seen corresponding path program 1 times [2024-10-12 15:19:05,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:19:05,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952954140] [2024-10-12 15:19:05,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:05,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:19:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-10-12 15:19:05,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:19:05,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952954140] [2024-10-12 15:19:05,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952954140] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:19:05,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:19:05,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:19:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000989366] [2024-10-12 15:19:05,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:19:05,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:19:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:19:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:19:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:19:05,858 INFO L87 Difference]: Start difference. First operand 73697 states and 78589 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 2 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:19:06,603 INFO L93 Difference]: Finished difference Result 203602 states and 217326 transitions. [2024-10-12 15:19:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:19:06,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 2 states have internal predecessors, (329), 0 states have call successors, (0), 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 504 [2024-10-12 15:19:06,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:19:06,738 INFO L225 Difference]: With dead ends: 203602 [2024-10-12 15:19:06,738 INFO L226 Difference]: Without dead ends: 131532 [2024-10-12 15:19:06,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:19:06,767 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 178 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:19:06,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 470 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:19:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131532 states. [2024-10-12 15:19:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131532 to 129702. [2024-10-12 15:19:08,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129702 states, 129701 states have (on average 1.066529941943393) internal successors, (138330), 129701 states have internal predecessors, (138330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129702 states to 129702 states and 138330 transitions. [2024-10-12 15:19:08,519 INFO L78 Accepts]: Start accepts. Automaton has 129702 states and 138330 transitions. Word has length 504 [2024-10-12 15:19:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:19:08,519 INFO L471 AbstractCegarLoop]: Abstraction has 129702 states and 138330 transitions. [2024-10-12 15:19:08,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 2 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 129702 states and 138330 transitions. [2024-10-12 15:19:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2024-10-12 15:19:08,590 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:19:08,591 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:19:08,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-12 15:19:08,591 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:19:08,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:19:08,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1019277016, now seen corresponding path program 1 times [2024-10-12 15:19:08,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:19:08,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447781154] [2024-10-12 15:19:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:19:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-12 15:19:09,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:19:09,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447781154] [2024-10-12 15:19:09,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447781154] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:19:09,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:19:09,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:19:09,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417833056] [2024-10-12 15:19:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:19:09,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:19:09,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:19:09,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:19:09,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:19:09,317 INFO L87 Difference]: Start difference. First operand 129702 states and 138330 transitions. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:19:10,730 INFO L93 Difference]: Finished difference Result 309678 states and 330344 transitions. [2024-10-12 15:19:10,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:19:10,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 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 520 [2024-10-12 15:19:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:19:10,970 INFO L225 Difference]: With dead ends: 309678 [2024-10-12 15:19:10,970 INFO L226 Difference]: Without dead ends: 182215 [2024-10-12 15:19:10,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:19:10,998 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 316 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:19:10,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 426 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:19:11,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182215 states. [2024-10-12 15:19:13,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182215 to 180386. [2024-10-12 15:19:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180386 states, 180385 states have (on average 1.066430135543421) internal successors, (192368), 180385 states have internal predecessors, (192368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180386 states to 180386 states and 192368 transitions. [2024-10-12 15:19:13,404 INFO L78 Accepts]: Start accepts. Automaton has 180386 states and 192368 transitions. Word has length 520 [2024-10-12 15:19:13,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:19:13,405 INFO L471 AbstractCegarLoop]: Abstraction has 180386 states and 192368 transitions. [2024-10-12 15:19:13,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 180386 states and 192368 transitions. [2024-10-12 15:19:13,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-10-12 15:19:13,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:19:13,484 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:19:13,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-12 15:19:13,484 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:19:13,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:19:13,484 INFO L85 PathProgramCache]: Analyzing trace with hash -279632389, now seen corresponding path program 1 times [2024-10-12 15:19:13,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:19:13,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810242995] [2024-10-12 15:19:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:13,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:19:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 361 proven. 9 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-10-12 15:19:14,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:19:14,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810242995] [2024-10-12 15:19:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810242995] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:19:14,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165161235] [2024-10-12 15:19:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:14,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:19:14,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:19:14,539 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:19:14,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 15:19:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:14,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:19:14,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:19:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-10-12 15:19:14,766 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:19:14,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165161235] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:19:14,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:19:14,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:19:14,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085234526] [2024-10-12 15:19:14,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:19:14,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:19:14,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:19:14,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:19:14,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:19:14,768 INFO L87 Difference]: Start difference. First operand 180386 states and 192368 transitions. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:19:15,952 INFO L93 Difference]: Finished difference Result 359988 states and 384069 transitions. [2024-10-12 15:19:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:19:15,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 533 [2024-10-12 15:19:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:19:16,157 INFO L225 Difference]: With dead ends: 359988 [2024-10-12 15:19:16,157 INFO L226 Difference]: Without dead ends: 181227 [2024-10-12 15:19:16,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:19:16,262 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 210 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:19:16,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 321 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:19:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181227 states.