./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_label41.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_label41.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 ee947e38812a78047df5e0d4c922466fc041cf3c45dbdc3424cead9945ce22c5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 15:19:48,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 15:19:49,026 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 15:19:49,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 15:19:49,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 15:19:49,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 15:19:49,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 15:19:49,066 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 15:19:49,067 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 15:19:49,069 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 15:19:49,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 15:19:49,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 15:19:49,070 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 15:19:49,072 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 15:19:49,072 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 15:19:49,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 15:19:49,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 15:19:49,075 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 15:19:49,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 15:19:49,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 15:19:49,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 15:19:49,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 15:19:49,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 15:19:49,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 15:19:49,078 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 15:19:49,078 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 15:19:49,078 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 15:19:49,078 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 15:19:49,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 15:19:49,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 15:19:49,079 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 15:19:49,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 15:19:49,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:19:49,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 15:19:49,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 15:19:49,080 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 15:19:49,081 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 15:19:49,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 15:19:49,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 15:19:49,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 15:19:49,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 15:19:49,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 15:19:49,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee947e38812a78047df5e0d4c922466fc041cf3c45dbdc3424cead9945ce22c5 [2024-10-12 15:19:49,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 15:19:49,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 15:19:49,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 15:19:49,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 15:19:49,365 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 15:19:49,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label41.c [2024-10-12 15:19:50,751 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 15:19:51,098 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 15:19:51,099 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label41.c [2024-10-12 15:19:51,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26f8c1cf2/c318a869e77b495e9abf36da630758e5/FLAG4a692afe8 [2024-10-12 15:19:51,139 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26f8c1cf2/c318a869e77b495e9abf36da630758e5 [2024-10-12 15:19:51,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 15:19:51,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 15:19:51,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 15:19:51,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 15:19:51,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 15:19:51,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:19:51" (1/1) ... [2024-10-12 15:19:51,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7895e3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:51, skipping insertion in model container [2024-10-12 15:19:51,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:19:51" (1/1) ... [2024-10-12 15:19:51,211 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 15:19:51,779 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_label41.c[58800,58813] [2024-10-12 15:19:51,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:19:51,818 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 15:19:51,984 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_label41.c[58800,58813] [2024-10-12 15:19:51,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:19:52,018 INFO L204 MainTranslator]: Completed translation [2024-10-12 15:19:52,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52 WrapperNode [2024-10-12 15:19:52,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 15:19:52,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 15:19:52,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 15:19:52,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 15:19:52,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,169 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-12 15:19:52,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 15:19:52,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 15:19:52,171 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 15:19:52,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 15:19:52,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,193 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,238 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 15:19:52,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 15:19:52,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 15:19:52,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 15:19:52,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 15:19:52,327 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (1/1) ... [2024-10-12 15:19:52,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:19:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:19:52,364 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 15:19:52,370 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 15:19:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 15:19:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 15:19:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 15:19:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 15:19:52,498 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 15:19:52,500 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 15:19:54,457 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-12 15:19:54,457 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 15:19:54,527 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 15:19:54,527 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 15:19:54,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:19:54 BoogieIcfgContainer [2024-10-12 15:19:54,528 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 15:19:54,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 15:19:54,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 15:19:54,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 15:19:54,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:19:51" (1/3) ... [2024-10-12 15:19:54,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68aedcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:19:54, skipping insertion in model container [2024-10-12 15:19:54,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:19:52" (2/3) ... [2024-10-12 15:19:54,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68aedcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:19:54, skipping insertion in model container [2024-10-12 15:19:54,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:19:54" (3/3) ... [2024-10-12 15:19:54,539 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label41.c [2024-10-12 15:19:54,555 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 15:19:54,556 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 15:19:54,647 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 15:19:54,658 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;@794c6cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 15:19:54,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 15:19:54,665 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 15:19:54,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-12 15:19:54,683 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:19:54,684 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] [2024-10-12 15:19:54,685 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:19:54,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:19:54,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1731392771, now seen corresponding path program 1 times [2024-10-12 15:19:54,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:19:54,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840593463] [2024-10-12 15:19:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:19:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:55,310 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 15:19:55,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:19:55,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840593463] [2024-10-12 15:19:55,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840593463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:19:55,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:19:55,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:19:55,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422739893] [2024-10-12 15:19:55,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:19:55,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 15:19:55,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:19:55,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 15:19:55,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:19:55,350 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 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 15:19:55,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:19:55,396 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-12 15:19:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 15:19:55,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2024-10-12 15:19:55,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:19:55,410 INFO L225 Difference]: With dead ends: 479 [2024-10-12 15:19:55,411 INFO L226 Difference]: Without dead ends: 238 [2024-10-12 15:19:55,413 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 15:19:55,416 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 15:19:55,417 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 15:19:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-12 15:19:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-12 15:19:55,459 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 15:19:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-12 15:19:55,463 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 181 [2024-10-12 15:19:55,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:19:55,464 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-12 15:19:55,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 15:19:55,465 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-12 15:19:55,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-12 15:19:55,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:19:55,469 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] [2024-10-12 15:19:55,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 15:19:55,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:19:55,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:19:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash -577107304, now seen corresponding path program 1 times [2024-10-12 15:19:55,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:19:55,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536322509] [2024-10-12 15:19:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:55,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:19:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:55,918 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 15:19:55,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:19:55,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536322509] [2024-10-12 15:19:55,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536322509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:19:55,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:19:55,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:19:55,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737288743] [2024-10-12 15:19:55,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:19:55,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:19:55,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:19:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:19:55,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:19:55,925 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 15:19:56,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:19:56,908 INFO L93 Difference]: Finished difference Result 699 states and 1160 transitions. [2024-10-12 15:19:56,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:19:56,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2024-10-12 15:19:56,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:19:56,912 INFO L225 Difference]: With dead ends: 699 [2024-10-12 15:19:56,912 INFO L226 Difference]: Without dead ends: 462 [2024-10-12 15:19:56,914 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 15:19:56,915 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 75 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 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, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 15:19:56,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 90 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 15:19:56,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-10-12 15:19:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 448. [2024-10-12 15:19:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.6196868008948546) internal successors, (724), 447 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 15:19:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 724 transitions. [2024-10-12 15:19:56,947 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 724 transitions. Word has length 181 [2024-10-12 15:19:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:19:56,948 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 724 transitions. [2024-10-12 15:19:56,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 15:19:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 724 transitions. [2024-10-12 15:19:56,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-10-12 15:19:56,955 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:19:56,956 INFO L215 NwaCegarLoop]: trace histogram [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 15:19:56,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 15:19:56,956 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:19:56,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:19:56,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1537413908, now seen corresponding path program 1 times [2024-10-12 15:19:56,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:19:56,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317193325] [2024-10-12 15:19:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:56,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:19:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:19:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:19:57,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317193325] [2024-10-12 15:19:57,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317193325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:19:57,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:19:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:19:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186897992] [2024-10-12 15:19:57,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:19:57,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:19:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:19:57,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:19:57,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:19:57,342 INFO L87 Difference]: Start difference. First operand 448 states and 724 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:58,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:19:58,025 INFO L93 Difference]: Finished difference Result 1320 states and 2138 transitions. [2024-10-12 15:19:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:19:58,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2024-10-12 15:19:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:19:58,030 INFO L225 Difference]: With dead ends: 1320 [2024-10-12 15:19:58,030 INFO L226 Difference]: Without dead ends: 873 [2024-10-12 15:19:58,032 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 15:19:58,034 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:19:58,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 147 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:19:58,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-10-12 15:19:58,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 869. [2024-10-12 15:19:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 1.5138248847926268) internal successors, (1314), 868 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 15:19:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1314 transitions. [2024-10-12 15:19:58,066 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1314 transitions. Word has length 186 [2024-10-12 15:19:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:19:58,066 INFO L471 AbstractCegarLoop]: Abstraction has 869 states and 1314 transitions. [2024-10-12 15:19:58,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:19:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1314 transitions. [2024-10-12 15:19:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-10-12 15:19:58,070 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:19:58,070 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 15:19:58,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 15:19:58,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:19:58,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:19:58,071 INFO L85 PathProgramCache]: Analyzing trace with hash -614504441, now seen corresponding path program 1 times [2024-10-12 15:19:58,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:19:58,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003672040] [2024-10-12 15:19:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:58,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:19:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:19:58,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:19:58,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003672040] [2024-10-12 15:19:58,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003672040] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:19:58,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964863904] [2024-10-12 15:19:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:19:58,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:19:58,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:19:58,453 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 15:19:58,455 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 15:19:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:19:58,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:19:58,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:19:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:19:58,961 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:19:58,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964863904] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:19:58,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:19:58,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 15:19:58,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588039372] [2024-10-12 15:19:58,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:19:58,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:19:58,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:19:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:19:58,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:19:58,965 INFO L87 Difference]: Start difference. First operand 869 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 15:19:59,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:19:59,786 INFO L93 Difference]: Finished difference Result 2574 states and 3905 transitions. [2024-10-12 15:19:59,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:19:59,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 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 188 [2024-10-12 15:19:59,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:19:59,794 INFO L225 Difference]: With dead ends: 2574 [2024-10-12 15:19:59,794 INFO L226 Difference]: Without dead ends: 1706 [2024-10-12 15:19:59,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 187 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 15:19:59,796 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 88 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:19:59,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 174 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:19:59,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2024-10-12 15:19:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1699. [2024-10-12 15:19:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1698 states have (on average 1.4487632508833923) internal successors, (2460), 1698 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states 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 15:19:59,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2460 transitions. [2024-10-12 15:19:59,830 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2460 transitions. Word has length 188 [2024-10-12 15:19:59,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:19:59,831 INFO L471 AbstractCegarLoop]: Abstraction has 1699 states and 2460 transitions. [2024-10-12 15:19:59,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 15:19:59,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2460 transitions. [2024-10-12 15:19:59,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-10-12 15:19:59,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:19:59,835 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:59,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 15:20:00,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:00,042 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:00,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:00,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1862793747, now seen corresponding path program 1 times [2024-10-12 15:20:00,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:00,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998432186] [2024-10-12 15:20:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:00,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 15:20:00,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998432186] [2024-10-12 15:20:00,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998432186] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:00,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:20:00,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:20:00,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550406549] [2024-10-12 15:20:00,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:00,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:00,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:00,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:20:00,363 INFO L87 Difference]: Start difference. First operand 1699 states and 2460 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 15:20:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:01,166 INFO L93 Difference]: Finished difference Result 4225 states and 6096 transitions. [2024-10-12 15:20:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:01,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 198 [2024-10-12 15:20:01,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:01,176 INFO L225 Difference]: With dead ends: 4225 [2024-10-12 15:20:01,176 INFO L226 Difference]: Without dead ends: 2527 [2024-10-12 15:20:01,179 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 15:20:01,180 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 234 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:01,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 113 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:20:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2024-10-12 15:20:01,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2526. [2024-10-12 15:20:01,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2526 states, 2525 states have (on average 1.4182178217821781) internal successors, (3581), 2525 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states 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 15:20:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2526 states to 2526 states and 3581 transitions. [2024-10-12 15:20:01,224 INFO L78 Accepts]: Start accepts. Automaton has 2526 states and 3581 transitions. Word has length 198 [2024-10-12 15:20:01,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:01,224 INFO L471 AbstractCegarLoop]: Abstraction has 2526 states and 3581 transitions. [2024-10-12 15:20:01,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 15:20:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2526 states and 3581 transitions. [2024-10-12 15:20:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-10-12 15:20:01,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:01,231 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] [2024-10-12 15:20:01,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 15:20:01,231 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:01,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:01,233 INFO L85 PathProgramCache]: Analyzing trace with hash 767243486, now seen corresponding path program 1 times [2024-10-12 15:20:01,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:01,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397552063] [2024-10-12 15:20:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:01,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:01,505 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 15:20:01,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397552063] [2024-10-12 15:20:01,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397552063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:01,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:20:01,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:20:01,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837584216] [2024-10-12 15:20:01,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:01,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:01,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:01,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:01,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:20:01,507 INFO L87 Difference]: Start difference. First operand 2526 states and 3581 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:20:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:02,371 INFO L93 Difference]: Finished difference Result 7491 states and 10626 transitions. [2024-10-12 15:20:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:02,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-10-12 15:20:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:02,391 INFO L225 Difference]: With dead ends: 7491 [2024-10-12 15:20:02,391 INFO L226 Difference]: Without dead ends: 4966 [2024-10-12 15:20:02,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:20:02,398 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 227 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:02,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 419 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:20:02,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4966 states. [2024-10-12 15:20:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4966 to 4964. [2024-10-12 15:20:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4964 states, 4963 states have (on average 1.2669756195849284) internal successors, (6288), 4963 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states 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 15:20:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4964 states to 4964 states and 6288 transitions. [2024-10-12 15:20:02,502 INFO L78 Accepts]: Start accepts. Automaton has 4964 states and 6288 transitions. Word has length 201 [2024-10-12 15:20:02,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:02,503 INFO L471 AbstractCegarLoop]: Abstraction has 4964 states and 6288 transitions. [2024-10-12 15:20:02,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:20:02,504 INFO L276 IsEmpty]: Start isEmpty. Operand 4964 states and 6288 transitions. [2024-10-12 15:20:02,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-12 15:20:02,512 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:02,513 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 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] [2024-10-12 15:20:02,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 15:20:02,513 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:02,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash -381698986, now seen corresponding path program 1 times [2024-10-12 15:20:02,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:02,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305660164] [2024-10-12 15:20:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:02,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 15:20:03,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:03,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305660164] [2024-10-12 15:20:03,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305660164] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:20:03,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821320859] [2024-10-12 15:20:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:03,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:03,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:20:03,094 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 15:20:03,098 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 15:20:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:03,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:20:03,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:20:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 15:20:03,356 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:20:03,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821320859] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:03,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:20:03,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 15:20:03,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025777232] [2024-10-12 15:20:03,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:03,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:03,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:03,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:03,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:20:03,362 INFO L87 Difference]: Start difference. First operand 4964 states and 6288 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 15:20:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:04,294 INFO L93 Difference]: Finished difference Result 14625 states and 18561 transitions. [2024-10-12 15:20:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:04,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 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 215 [2024-10-12 15:20:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:04,333 INFO L225 Difference]: With dead ends: 14625 [2024-10-12 15:20:04,334 INFO L226 Difference]: Without dead ends: 9662 [2024-10-12 15:20:04,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 214 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 15:20:04,344 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 242 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:04,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 176 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:20:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9662 states. [2024-10-12 15:20:04,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9662 to 9661. [2024-10-12 15:20:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9661 states, 9660 states have (on average 1.2312629399585922) internal successors, (11894), 9660 states have internal predecessors, (11894), 0 states have call successors, (0), 0 states 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 15:20:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9661 states to 9661 states and 11894 transitions. [2024-10-12 15:20:04,535 INFO L78 Accepts]: Start accepts. Automaton has 9661 states and 11894 transitions. Word has length 215 [2024-10-12 15:20:04,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:04,536 INFO L471 AbstractCegarLoop]: Abstraction has 9661 states and 11894 transitions. [2024-10-12 15:20:04,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 15:20:04,536 INFO L276 IsEmpty]: Start isEmpty. Operand 9661 states and 11894 transitions. [2024-10-12 15:20:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-10-12 15:20:04,552 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:04,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:04,570 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 15:20:04,752 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,SelfDestructingSolverStorable6 [2024-10-12 15:20:04,754 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:04,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1000193572, now seen corresponding path program 1 times [2024-10-12 15:20:04,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:04,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375424814] [2024-10-12 15:20:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:04,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:20:05,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:05,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375424814] [2024-10-12 15:20:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375424814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:20:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814399516] [2024-10-12 15:20:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:05,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:05,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:20:05,365 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 15:20:05,367 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 15:20:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:05,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:20:05,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:20:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:20:05,723 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:20:05,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814399516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:05,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:20:05,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:20:05,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508816696] [2024-10-12 15:20:05,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:05,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:05,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:05,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:05,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:20:05,726 INFO L87 Difference]: Start difference. First operand 9661 states and 11894 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 15:20:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:06,581 INFO L93 Difference]: Finished difference Result 27894 states and 34476 transitions. [2024-10-12 15:20:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:06,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 229 [2024-10-12 15:20:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:06,636 INFO L225 Difference]: With dead ends: 27894 [2024-10-12 15:20:06,637 INFO L226 Difference]: Without dead ends: 18234 [2024-10-12 15:20:06,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 228 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 15:20:06,653 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 62 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:06,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 170 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:20:06,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18234 states. [2024-10-12 15:20:06,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18234 to 15154. [2024-10-12 15:20:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15154 states, 15153 states have (on average 1.2606084603708836) internal successors, (19102), 15153 states have internal predecessors, (19102), 0 states have call successors, (0), 0 states 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 15:20:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15154 states to 15154 states and 19102 transitions. [2024-10-12 15:20:06,939 INFO L78 Accepts]: Start accepts. Automaton has 15154 states and 19102 transitions. Word has length 229 [2024-10-12 15:20:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:06,940 INFO L471 AbstractCegarLoop]: Abstraction has 15154 states and 19102 transitions. [2024-10-12 15:20:06,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 15:20:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 15154 states and 19102 transitions. [2024-10-12 15:20:06,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-10-12 15:20:06,968 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:06,968 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:06,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 15:20:07,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:07,170 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:07,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:07,171 INFO L85 PathProgramCache]: Analyzing trace with hash -415781716, now seen corresponding path program 1 times [2024-10-12 15:20:07,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:07,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244627735] [2024-10-12 15:20:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:07,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 15:20:07,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244627735] [2024-10-12 15:20:07,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244627735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:07,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:20:07,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:20:07,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706280085] [2024-10-12 15:20:07,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:07,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:07,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:07,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:20:07,351 INFO L87 Difference]: Start difference. First operand 15154 states and 19102 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 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 15:20:07,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:07,740 INFO L93 Difference]: Finished difference Result 45004 states and 56783 transitions. [2024-10-12 15:20:07,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:07,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 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 243 [2024-10-12 15:20:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:07,797 INFO L225 Difference]: With dead ends: 45004 [2024-10-12 15:20:07,798 INFO L226 Difference]: Without dead ends: 29851 [2024-10-12 15:20:07,821 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 15:20:07,822 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 323 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:07,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 539 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:20:07,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29851 states. [2024-10-12 15:20:08,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29851 to 29849. [2024-10-12 15:20:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29849 states, 29848 states have (on average 1.2616255695523988) internal successors, (37657), 29848 states have internal predecessors, (37657), 0 states have call successors, (0), 0 states 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 15:20:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29849 states to 29849 states and 37657 transitions. [2024-10-12 15:20:08,464 INFO L78 Accepts]: Start accepts. Automaton has 29849 states and 37657 transitions. Word has length 243 [2024-10-12 15:20:08,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:08,464 INFO L471 AbstractCegarLoop]: Abstraction has 29849 states and 37657 transitions. [2024-10-12 15:20:08,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 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 15:20:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 29849 states and 37657 transitions. [2024-10-12 15:20:08,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-10-12 15:20:08,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:08,632 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:08,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 15:20:08,632 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:08,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:08,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1163556705, now seen corresponding path program 1 times [2024-10-12 15:20:08,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:08,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780165542] [2024-10-12 15:20:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:08,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-12 15:20:09,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:09,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780165542] [2024-10-12 15:20:09,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780165542] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:20:09,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595694022] [2024-10-12 15:20:09,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:09,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:09,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:20:09,118 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 15:20:09,120 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 15:20:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:09,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:20:09,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:20:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-12 15:20:09,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:20:09,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595694022] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:09,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:20:09,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:20:09,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180782387] [2024-10-12 15:20:09,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:09,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:09,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:20:09,306 INFO L87 Difference]: Start difference. First operand 29849 states and 37657 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 15:20:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:10,333 INFO L93 Difference]: Finished difference Result 77567 states and 99449 transitions. [2024-10-12 15:20:10,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:10,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 15:20:10,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:10,435 INFO L225 Difference]: With dead ends: 77567 [2024-10-12 15:20:10,435 INFO L226 Difference]: Without dead ends: 47719 [2024-10-12 15:20:10,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 245 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 15:20:10,475 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 233 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:10,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 416 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:20:10,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47719 states. [2024-10-12 15:20:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47719 to 44465. [2024-10-12 15:20:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44465 states, 44464 states have (on average 1.2759760705289673) internal successors, (56735), 44464 states have internal predecessors, (56735), 0 states have call successors, (0), 0 states 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 15:20:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44465 states to 44465 states and 56735 transitions. [2024-10-12 15:20:11,614 INFO L78 Accepts]: Start accepts. Automaton has 44465 states and 56735 transitions. Word has length 246 [2024-10-12 15:20:11,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:11,615 INFO L471 AbstractCegarLoop]: Abstraction has 44465 states and 56735 transitions. [2024-10-12 15:20:11,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 15:20:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 44465 states and 56735 transitions. [2024-10-12 15:20:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-10-12 15:20:11,655 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:11,656 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 15:20:11,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 15:20:11,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:11,857 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:11,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:11,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1698834821, now seen corresponding path program 1 times [2024-10-12 15:20:11,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:11,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337694743] [2024-10-12 15:20:11,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:11,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 76 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-12 15:20:12,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337694743] [2024-10-12 15:20:12,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337694743] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:20:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917254987] [2024-10-12 15:20:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:12,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:12,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:20:12,605 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 15:20:12,606 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 15:20:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:12,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:20:12,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:20:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:20:12,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:20:12,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917254987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:12,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:20:12,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:20:12,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470149559] [2024-10-12 15:20:12,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:12,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:12,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:12,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:12,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:20:12,814 INFO L87 Difference]: Start difference. First operand 44465 states and 56735 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 15:20:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:13,810 INFO L93 Difference]: Finished difference Result 88732 states and 113225 transitions. [2024-10-12 15:20:13,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:13,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2024-10-12 15:20:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:13,876 INFO L225 Difference]: With dead ends: 88732 [2024-10-12 15:20:13,877 INFO L226 Difference]: Without dead ends: 44268 [2024-10-12 15:20:13,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:20:13,910 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 223 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:13,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 164 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:20:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44268 states. [2024-10-12 15:20:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44268 to 44262. [2024-10-12 15:20:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44262 states, 44261 states have (on average 1.1870721402589186) internal successors, (52541), 44261 states have internal predecessors, (52541), 0 states have call successors, (0), 0 states 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 15:20:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44262 states to 44262 states and 52541 transitions. [2024-10-12 15:20:14,451 INFO L78 Accepts]: Start accepts. Automaton has 44262 states and 52541 transitions. Word has length 252 [2024-10-12 15:20:14,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:14,452 INFO L471 AbstractCegarLoop]: Abstraction has 44262 states and 52541 transitions. [2024-10-12 15:20:14,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 15:20:14,452 INFO L276 IsEmpty]: Start isEmpty. Operand 44262 states and 52541 transitions. [2024-10-12 15:20:14,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-10-12 15:20:14,493 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:14,493 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:14,511 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 15:20:14,693 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,SelfDestructingSolverStorable10 [2024-10-12 15:20:14,694 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:14,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1071704679, now seen corresponding path program 1 times [2024-10-12 15:20:14,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:14,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641852446] [2024-10-12 15:20:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:14,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 90 proven. 6 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-12 15:20:15,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:15,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641852446] [2024-10-12 15:20:15,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641852446] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:20:15,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594074516] [2024-10-12 15:20:15,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:15,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:15,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:20:15,339 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 15:20:15,340 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 15:20:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:15,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:20:15,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:20:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-12 15:20:15,630 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:20:15,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594074516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:15,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:20:15,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 15:20:15,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609220958] [2024-10-12 15:20:15,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:15,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:15,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:15,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:15,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:20:15,633 INFO L87 Difference]: Start difference. First operand 44262 states and 52541 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 15:20:16,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:16,144 INFO L93 Difference]: Finished difference Result 87643 states and 103951 transitions. [2024-10-12 15:20:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:16,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 262 [2024-10-12 15:20:16,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:16,195 INFO L225 Difference]: With dead ends: 87643 [2024-10-12 15:20:16,195 INFO L226 Difference]: Without dead ends: 43382 [2024-10-12 15:20:16,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 261 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 15:20:16,231 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 15:20:16,231 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 15:20:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43382 states. [2024-10-12 15:20:16,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43382 to 43382. [2024-10-12 15:20:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43382 states, 43381 states have (on average 1.1720568912657614) internal successors, (50845), 43381 states have internal predecessors, (50845), 0 states have call successors, (0), 0 states 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 15:20:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43382 states to 43382 states and 50845 transitions. [2024-10-12 15:20:17,048 INFO L78 Accepts]: Start accepts. Automaton has 43382 states and 50845 transitions. Word has length 262 [2024-10-12 15:20:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:17,048 INFO L471 AbstractCegarLoop]: Abstraction has 43382 states and 50845 transitions. [2024-10-12 15:20:17,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 15:20:17,049 INFO L276 IsEmpty]: Start isEmpty. Operand 43382 states and 50845 transitions. [2024-10-12 15:20:17,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-10-12 15:20:17,086 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:17,087 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:20:17,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 15:20:17,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:17,288 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:17,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:17,289 INFO L85 PathProgramCache]: Analyzing trace with hash -978651062, now seen corresponding path program 1 times [2024-10-12 15:20:17,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:17,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970798522] [2024-10-12 15:20:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:20:17,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:17,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970798522] [2024-10-12 15:20:17,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970798522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:17,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:20:17,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:20:17,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537948495] [2024-10-12 15:20:17,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:17,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:17,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:17,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:20:17,489 INFO L87 Difference]: Start difference. First operand 43382 states and 50845 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 15:20:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:18,254 INFO L93 Difference]: Finished difference Result 83905 states and 98203 transitions. [2024-10-12 15:20:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:18,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 300 [2024-10-12 15:20:18,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:18,299 INFO L225 Difference]: With dead ends: 83905 [2024-10-12 15:20:18,299 INFO L226 Difference]: Without dead ends: 40524 [2024-10-12 15:20:18,325 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 15:20:18,326 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 226 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:18,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 317 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:20:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40524 states. [2024-10-12 15:20:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40524 to 33811. [2024-10-12 15:20:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33811 states, 33810 states have (on average 1.1363501922508135) internal successors, (38420), 33810 states have internal predecessors, (38420), 0 states have call successors, (0), 0 states 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 15:20:18,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33811 states to 33811 states and 38420 transitions. [2024-10-12 15:20:18,874 INFO L78 Accepts]: Start accepts. Automaton has 33811 states and 38420 transitions. Word has length 300 [2024-10-12 15:20:18,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:18,875 INFO L471 AbstractCegarLoop]: Abstraction has 33811 states and 38420 transitions. [2024-10-12 15:20:18,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 15:20:18,875 INFO L276 IsEmpty]: Start isEmpty. Operand 33811 states and 38420 transitions. [2024-10-12 15:20:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-10-12 15:20:18,905 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:18,905 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:20:18,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 15:20:18,905 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:18,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash -742110292, now seen corresponding path program 1 times [2024-10-12 15:20:18,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:18,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873552007] [2024-10-12 15:20:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:18,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 148 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 15:20:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873552007] [2024-10-12 15:20:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873552007] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:20:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284976528] [2024-10-12 15:20:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:19,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:19,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:20:19,639 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 15:20:19,640 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 15:20:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:19,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:20:19,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:20:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 15:20:19,950 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:20:19,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284976528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:19,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:20:19,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 15:20:19,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029139111] [2024-10-12 15:20:19,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:19,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:19,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:20:19,952 INFO L87 Difference]: Start difference. First operand 33811 states and 38420 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:20:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:20,410 INFO L93 Difference]: Finished difference Result 87162 states and 98991 transitions. [2024-10-12 15:20:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:20,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2024-10-12 15:20:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:20,462 INFO L225 Difference]: With dead ends: 87162 [2024-10-12 15:20:20,463 INFO L226 Difference]: Without dead ends: 53352 [2024-10-12 15:20:20,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 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 15:20:20,486 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 192 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:20,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 437 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:20:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53352 states. [2024-10-12 15:20:21,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53352 to 53350. [2024-10-12 15:20:21,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53350 states, 53349 states have (on average 1.1349041219141878) internal successors, (60546), 53349 states have internal predecessors, (60546), 0 states have call successors, (0), 0 states 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 15:20:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53350 states to 53350 states and 60546 transitions. [2024-10-12 15:20:21,150 INFO L78 Accepts]: Start accepts. Automaton has 53350 states and 60546 transitions. Word has length 332 [2024-10-12 15:20:21,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:21,150 INFO L471 AbstractCegarLoop]: Abstraction has 53350 states and 60546 transitions. [2024-10-12 15:20:21,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:20:21,150 INFO L276 IsEmpty]: Start isEmpty. Operand 53350 states and 60546 transitions. [2024-10-12 15:20:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-10-12 15:20:21,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:21,182 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:21,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 15:20:21,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:21,384 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:21,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash -601173570, now seen corresponding path program 1 times [2024-10-12 15:20:21,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:21,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390601150] [2024-10-12 15:20:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:21,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-12 15:20:21,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390601150] [2024-10-12 15:20:21,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390601150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:21,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:20:21,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:20:21,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981334381] [2024-10-12 15:20:21,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:21,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:21,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:21,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:21,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:20:21,586 INFO L87 Difference]: Start difference. First operand 53350 states and 60546 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 15:20:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:22,553 INFO L93 Difference]: Finished difference Result 100553 states and 113941 transitions. [2024-10-12 15:20:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:22,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 341 [2024-10-12 15:20:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:22,615 INFO L225 Difference]: With dead ends: 100553 [2024-10-12 15:20:22,616 INFO L226 Difference]: Without dead ends: 47204 [2024-10-12 15:20:22,651 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 15:20:22,652 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 245 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:22,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 330 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:20:22,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47204 states. [2024-10-12 15:20:23,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47204 to 44563. [2024-10-12 15:20:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44563 states, 44562 states have (on average 1.1080741438894126) internal successors, (49378), 44562 states have internal predecessors, (49378), 0 states have call successors, (0), 0 states 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 15:20:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44563 states to 44563 states and 49378 transitions. [2024-10-12 15:20:23,518 INFO L78 Accepts]: Start accepts. Automaton has 44563 states and 49378 transitions. Word has length 341 [2024-10-12 15:20:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:23,518 INFO L471 AbstractCegarLoop]: Abstraction has 44563 states and 49378 transitions. [2024-10-12 15:20:23,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 15:20:23,519 INFO L276 IsEmpty]: Start isEmpty. Operand 44563 states and 49378 transitions. [2024-10-12 15:20:23,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-10-12 15:20:23,561 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:23,561 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:23,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 15:20:23,562 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:23,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:23,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1677778608, now seen corresponding path program 1 times [2024-10-12 15:20:23,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:23,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104039969] [2024-10-12 15:20:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:23,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 211 proven. 6 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-10-12 15:20:25,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:25,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104039969] [2024-10-12 15:20:25,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104039969] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:20:25,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599606624] [2024-10-12 15:20:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:25,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:25,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:20:25,155 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 15:20:25,157 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 15:20:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:25,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:20:25,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:20:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-10-12 15:20:25,448 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:20:25,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599606624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:25,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:20:25,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:20:25,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455995029] [2024-10-12 15:20:25,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:25,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:25,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:25,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:25,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:20:25,450 INFO L87 Difference]: Start difference. First operand 44563 states and 49378 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 15:20:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:25,963 INFO L93 Difference]: Finished difference Result 116975 states and 129438 transitions. [2024-10-12 15:20:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:25,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 436 [2024-10-12 15:20:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:26,046 INFO L225 Difference]: With dead ends: 116975 [2024-10-12 15:20:26,046 INFO L226 Difference]: Without dead ends: 72413 [2024-10-12 15:20:26,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:20:26,079 INFO L432 NwaCegarLoop]: 570 mSDtfsCounter, 273 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:26,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 795 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:20:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72413 states. [2024-10-12 15:20:26,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72413 to 72411. [2024-10-12 15:20:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72411 states, 72410 states have (on average 1.0967684021543986) internal successors, (79417), 72410 states have internal predecessors, (79417), 0 states have call successors, (0), 0 states 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 15:20:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72411 states to 72411 states and 79417 transitions. [2024-10-12 15:20:26,882 INFO L78 Accepts]: Start accepts. Automaton has 72411 states and 79417 transitions. Word has length 436 [2024-10-12 15:20:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:26,882 INFO L471 AbstractCegarLoop]: Abstraction has 72411 states and 79417 transitions. [2024-10-12 15:20:26,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 15:20:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 72411 states and 79417 transitions. [2024-10-12 15:20:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-10-12 15:20:26,955 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:26,955 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:20:26,974 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 15:20:27,156 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,SelfDestructingSolverStorable15 [2024-10-12 15:20:27,156 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:27,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:27,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1831586783, now seen corresponding path program 1 times [2024-10-12 15:20:27,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:27,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024570326] [2024-10-12 15:20:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:27,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 220 proven. 6 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2024-10-12 15:20:29,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:29,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024570326] [2024-10-12 15:20:29,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024570326] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:20:29,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347556159] [2024-10-12 15:20:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:29,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:29,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:20:29,344 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 15:20:29,346 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 15:20:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:29,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:20:29,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:20:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-10-12 15:20:29,602 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:20:29,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347556159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:29,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:20:29,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:20:29,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579131266] [2024-10-12 15:20:29,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:29,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:29,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:29,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:29,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:20:29,607 INFO L87 Difference]: Start difference. First operand 72411 states and 79417 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 15:20:30,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:30,434 INFO L93 Difference]: Finished difference Result 149110 states and 163490 transitions. [2024-10-12 15:20:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:30,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 445 [2024-10-12 15:20:30,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:30,513 INFO L225 Difference]: With dead ends: 149110 [2024-10-12 15:20:30,513 INFO L226 Difference]: Without dead ends: 76700 [2024-10-12 15:20:30,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:20:30,560 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 208 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:30,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 351 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:20:30,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76700 states. [2024-10-12 15:20:31,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76700 to 74238. [2024-10-12 15:20:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74238 states, 74237 states have (on average 1.0920565216805636) internal successors, (81071), 74237 states have internal predecessors, (81071), 0 states have call successors, (0), 0 states 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 15:20:31,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74238 states to 74238 states and 81071 transitions. [2024-10-12 15:20:31,470 INFO L78 Accepts]: Start accepts. Automaton has 74238 states and 81071 transitions. Word has length 445 [2024-10-12 15:20:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:31,470 INFO L471 AbstractCegarLoop]: Abstraction has 74238 states and 81071 transitions. [2024-10-12 15:20:31,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 15:20:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 74238 states and 81071 transitions. [2024-10-12 15:20:31,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-10-12 15:20:31,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:31,522 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:31,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 15:20:31,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 15:20:31,723 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:31,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash -725823633, now seen corresponding path program 1 times [2024-10-12 15:20:31,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374130562] [2024-10-12 15:20:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:31,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-10-12 15:20:32,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:32,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374130562] [2024-10-12 15:20:32,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374130562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:32,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:20:32,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:20:32,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953119096] [2024-10-12 15:20:32,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:32,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:20:32,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:32,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:20:32,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:20:32,547 INFO L87 Difference]: Start difference. First operand 74238 states and 81071 transitions. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 15:20:33,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:33,618 INFO L93 Difference]: Finished difference Result 207666 states and 227066 transitions. [2024-10-12 15:20:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:20:33,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 458 [2024-10-12 15:20:33,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:33,773 INFO L225 Difference]: With dead ends: 207666 [2024-10-12 15:20:33,773 INFO L226 Difference]: Without dead ends: 133429 [2024-10-12 15:20:33,837 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 15:20:33,838 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 532 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:33,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 49 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:20:34,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133429 states. [2024-10-12 15:20:35,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133429 to 133421. [2024-10-12 15:20:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133421 states, 133420 states have (on average 1.0937490631089792) internal successors, (145928), 133420 states have internal predecessors, (145928), 0 states have call successors, (0), 0 states 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 15:20:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133421 states to 133421 states and 145928 transitions. [2024-10-12 15:20:35,938 INFO L78 Accepts]: Start accepts. Automaton has 133421 states and 145928 transitions. Word has length 458 [2024-10-12 15:20:35,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:35,938 INFO L471 AbstractCegarLoop]: Abstraction has 133421 states and 145928 transitions. [2024-10-12 15:20:35,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 15:20:35,938 INFO L276 IsEmpty]: Start isEmpty. Operand 133421 states and 145928 transitions. [2024-10-12 15:20:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-10-12 15:20:35,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:35,995 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:20:35,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 15:20:35,995 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:35,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:35,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1195056542, now seen corresponding path program 1 times [2024-10-12 15:20:35,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:35,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689613874] [2024-10-12 15:20:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:35,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 240 proven. 6 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2024-10-12 15:20:38,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:38,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689613874] [2024-10-12 15:20:38,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689613874] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:20:38,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138225859] [2024-10-12 15:20:38,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:38,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:38,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:20:38,353 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:20:38,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 15:20:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:38,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:20:38,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:20:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-12 15:20:38,628 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:20:38,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138225859] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:38,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:20:38,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:20:38,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357730310] [2024-10-12 15:20:38,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:38,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:38,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:38,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:38,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:20:38,634 INFO L87 Difference]: Start difference. First operand 133421 states and 145928 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 15:20:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:39,830 INFO L93 Difference]: Finished difference Result 374988 states and 410147 transitions. [2024-10-12 15:20:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:39,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 464 [2024-10-12 15:20:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:40,178 INFO L225 Difference]: With dead ends: 374988 [2024-10-12 15:20:40,179 INFO L226 Difference]: Without dead ends: 241568 [2024-10-12 15:20:40,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:20:40,303 INFO L432 NwaCegarLoop]: 583 mSDtfsCounter, 299 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:40,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 843 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 15:20:40,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241568 states. [2024-10-12 15:20:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241568 to 241351. [2024-10-12 15:20:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241351 states, 241350 states have (on average 1.0858545680546923) internal successors, (262071), 241350 states have internal predecessors, (262071), 0 states have call successors, (0), 0 states 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 15:20:43,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241351 states to 241351 states and 262071 transitions. [2024-10-12 15:20:43,970 INFO L78 Accepts]: Start accepts. Automaton has 241351 states and 262071 transitions. Word has length 464 [2024-10-12 15:20:43,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:43,970 INFO L471 AbstractCegarLoop]: Abstraction has 241351 states and 262071 transitions. [2024-10-12 15:20:43,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 15:20:43,971 INFO L276 IsEmpty]: Start isEmpty. Operand 241351 states and 262071 transitions. [2024-10-12 15:20:44,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-10-12 15:20:44,092 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:44,092 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:44,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 15:20:44,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:44,294 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:44,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:44,295 INFO L85 PathProgramCache]: Analyzing trace with hash 806138622, now seen corresponding path program 1 times [2024-10-12 15:20:44,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:44,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414293659] [2024-10-12 15:20:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:44,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 244 proven. 6 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-10-12 15:20:46,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:20:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414293659] [2024-10-12 15:20:46,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414293659] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:20:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066637776] [2024-10-12 15:20:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:46,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:46,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:20:46,913 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:20:46,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 15:20:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:20:47,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:20:47,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:20:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-12 15:20:47,344 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:20:47,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066637776] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:20:47,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:20:47,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:20:47,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394546086] [2024-10-12 15:20:47,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:20:47,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:20:47,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:20:47,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:20:47,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:20:47,347 INFO L87 Difference]: Start difference. First operand 241351 states and 262071 transitions. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states 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 15:20:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:20:48,807 INFO L93 Difference]: Finished difference Result 482313 states and 523744 transitions. [2024-10-12 15:20:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:20:48,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 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 469 [2024-10-12 15:20:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:20:49,121 INFO L225 Difference]: With dead ends: 482313 [2024-10-12 15:20:49,121 INFO L226 Difference]: Without dead ends: 240963 [2024-10-12 15:20:49,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:20:49,797 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 134 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:20:49,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 46 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:20:50,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240963 states. [2024-10-12 15:20:52,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240963 to 240943. [2024-10-12 15:20:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240943 states, 240942 states have (on average 1.0857882809970865) internal successors, (261612), 240942 states have internal predecessors, (261612), 0 states have call successors, (0), 0 states 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 15:20:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240943 states to 240943 states and 261612 transitions. [2024-10-12 15:20:53,131 INFO L78 Accepts]: Start accepts. Automaton has 240943 states and 261612 transitions. Word has length 469 [2024-10-12 15:20:53,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:20:53,132 INFO L471 AbstractCegarLoop]: Abstraction has 240943 states and 261612 transitions. [2024-10-12 15:20:53,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states 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 15:20:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 240943 states and 261612 transitions. [2024-10-12 15:20:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2024-10-12 15:20:53,250 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:20:53,251 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 15:20:53,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 15:20:53,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:20:53,452 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:20:53,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:20:53,452 INFO L85 PathProgramCache]: Analyzing trace with hash 217310450, now seen corresponding path program 1 times [2024-10-12 15:20:53,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:20:53,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548144559] [2024-10-12 15:20:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:20:53,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:20:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat