./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/Problem11_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label05.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 6998e746c84ec80cbdf636f88f142c2942fd045c8cffd9bc8881e887e07cd119 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 23:17:21,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 23:17:22,027 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 23:17:22,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 23:17:22,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 23:17:22,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 23:17:22,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 23:17:22,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 23:17:22,066 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 23:17:22,067 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 23:17:22,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 23:17:22,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 23:17:22,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 23:17:22,071 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 23:17:22,071 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 23:17:22,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 23:17:22,072 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 23:17:22,072 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 23:17:22,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 23:17:22,073 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 23:17:22,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 23:17:22,076 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 23:17:22,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 23:17:22,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 23:17:22,077 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 23:17:22,078 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 23:17:22,078 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 23:17:22,078 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 23:17:22,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 23:17:22,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 23:17:22,079 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 23:17:22,080 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 23:17:22,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:17:22,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 23:17:22,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 23:17:22,082 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 23:17:22,082 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 23:17:22,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 23:17:22,083 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 23:17:22,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 23:17:22,083 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 23:17:22,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 23:17:22,084 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6998e746c84ec80cbdf636f88f142c2942fd045c8cffd9bc8881e887e07cd119 [2024-10-10 23:17:22,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 23:17:22,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 23:17:22,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 23:17:22,369 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 23:17:22,369 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 23:17:22,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label05.c [2024-10-10 23:17:23,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 23:17:24,075 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 23:17:24,076 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label05.c [2024-10-10 23:17:24,106 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/037e9a67c/5bd450a66ac14c15a31aa4abd50b4584/FLAG35c76ed91 [2024-10-10 23:17:24,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/037e9a67c/5bd450a66ac14c15a31aa4abd50b4584 [2024-10-10 23:17:24,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 23:17:24,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 23:17:24,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 23:17:24,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 23:17:24,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 23:17:24,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:24,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6634c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24, skipping insertion in model container [2024-10-10 23:17:24,145 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:24,201 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 23:17:24,492 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/Problem11_label05.c[9225,9238] [2024-10-10 23:17:24,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:17:24,710 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 23:17:24,759 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/Problem11_label05.c[9225,9238] [2024-10-10 23:17:24,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:17:24,936 INFO L204 MainTranslator]: Completed translation [2024-10-10 23:17:24,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24 WrapperNode [2024-10-10 23:17:24,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 23:17:24,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 23:17:24,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 23:17:24,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 23:17:24,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:24,979 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:25,072 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-10-10 23:17:25,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 23:17:25,073 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 23:17:25,073 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 23:17:25,074 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 23:17:25,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:25,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:25,104 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:25,168 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]. [2024-10-10 23:17:25,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:25,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:25,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:25,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:25,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:25,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:25,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 23:17:25,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 23:17:25,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 23:17:25,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 23:17:25,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (1/1) ... [2024-10-10 23:17:25,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:17:25,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:17:25,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 23:17:25,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 23:17:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 23:17:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 23:17:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 23:17:25,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 23:17:25,506 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 23:17:25,507 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 23:17:27,100 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-10-10 23:17:27,100 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 23:17:27,158 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 23:17:27,160 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 23:17:27,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:17:27 BoogieIcfgContainer [2024-10-10 23:17:27,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 23:17:27,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 23:17:27,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 23:17:27,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 23:17:27,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:17:24" (1/3) ... [2024-10-10 23:17:27,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b19910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:17:27, skipping insertion in model container [2024-10-10 23:17:27,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:17:24" (2/3) ... [2024-10-10 23:17:27,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b19910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:17:27, skipping insertion in model container [2024-10-10 23:17:27,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:17:27" (3/3) ... [2024-10-10 23:17:27,169 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label05.c [2024-10-10 23:17:27,185 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 23:17:27,185 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 23:17:27,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 23:17:27,269 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;@5dacc5b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 23:17:27,270 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 23:17:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-10 23:17:27,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:27,288 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] [2024-10-10 23:17:27,288 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:27,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2030647519, now seen corresponding path program 1 times [2024-10-10 23:17:27,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:27,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172529012] [2024-10-10 23:17:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:27,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:27,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172529012] [2024-10-10 23:17:27,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172529012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:27,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:27,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:17:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589216352] [2024-10-10 23:17:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:27,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 23:17:27,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:27,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 23:17:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:17:27,566 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 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 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:27,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:27,621 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2024-10-10 23:17:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 23:17:27,625 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-10-10 23:17:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:27,637 INFO L225 Difference]: With dead ends: 441 [2024-10-10 23:17:27,638 INFO L226 Difference]: Without dead ends: 219 [2024-10-10 23:17:27,642 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 [2024-10-10 23:17:27,647 INFO L432 NwaCegarLoop]: 355 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, 355 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 [2024-10-10 23:17:27,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 23:17:27,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-10 23:17:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-10 23:17:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2024-10-10 23:17:27,696 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 63 [2024-10-10 23:17:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:27,697 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2024-10-10 23:17:27,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2024-10-10 23:17:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-10 23:17:27,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:27,699 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] [2024-10-10 23:17:27,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 23:17:27,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:27,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:27,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1202438421, now seen corresponding path program 1 times [2024-10-10 23:17:27,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:27,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693457589] [2024-10-10 23:17:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:27,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:27,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:27,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693457589] [2024-10-10 23:17:27,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693457589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:27,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:27,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:17:27,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412519478] [2024-10-10 23:17:27,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:27,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:27,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:27,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:27,968 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:28,864 INFO L93 Difference]: Finished difference Result 630 states and 1026 transitions. [2024-10-10 23:17:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:28,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-10-10 23:17:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:28,868 INFO L225 Difference]: With dead ends: 630 [2024-10-10 23:17:28,868 INFO L226 Difference]: Without dead ends: 412 [2024-10-10 23:17:28,869 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 [2024-10-10 23:17:28,870 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 160 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:28,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 155 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 23:17:28,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-10-10 23:17:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2024-10-10 23:17:28,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.4549878345498783) internal successors, (598), 411 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 598 transitions. [2024-10-10 23:17:28,900 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 598 transitions. Word has length 63 [2024-10-10 23:17:28,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:28,900 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 598 transitions. [2024-10-10 23:17:28,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:28,901 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 598 transitions. [2024-10-10 23:17:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-10 23:17:28,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:28,905 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:28,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 23:17:28,905 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:28,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1841700557, now seen corresponding path program 1 times [2024-10-10 23:17:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:28,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067568603] [2024-10-10 23:17:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:28,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:29,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:29,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067568603] [2024-10-10 23:17:29,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067568603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:29,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:29,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:17:29,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931614728] [2024-10-10 23:17:29,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:29,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:29,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:29,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:29,148 INFO L87 Difference]: Start difference. First operand 412 states and 598 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:29,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:29,796 INFO L93 Difference]: Finished difference Result 1210 states and 1762 transitions. [2024-10-10 23:17:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:29,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2024-10-10 23:17:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:29,800 INFO L225 Difference]: With dead ends: 1210 [2024-10-10 23:17:29,800 INFO L226 Difference]: Without dead ends: 799 [2024-10-10 23:17:29,802 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 [2024-10-10 23:17:29,803 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 144 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:29,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 116 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:17:29,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-10-10 23:17:29,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 788. [2024-10-10 23:17:29,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.3761118170266835) internal successors, (1083), 787 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1083 transitions. [2024-10-10 23:17:29,828 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1083 transitions. Word has length 131 [2024-10-10 23:17:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:29,829 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1083 transitions. [2024-10-10 23:17:29,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1083 transitions. [2024-10-10 23:17:29,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-10-10 23:17:29,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:29,833 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:29,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 23:17:29,833 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:29,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:29,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2101898409, now seen corresponding path program 1 times [2024-10-10 23:17:29,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:29,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130081981] [2024-10-10 23:17:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:29,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:30,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:30,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130081981] [2024-10-10 23:17:30,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130081981] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:30,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:30,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:17:30,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720765642] [2024-10-10 23:17:30,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:30,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:30,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:30,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:30,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:30,153 INFO L87 Difference]: Start difference. First operand 788 states and 1083 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:30,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:30,887 INFO L93 Difference]: Finished difference Result 1944 states and 2613 transitions. [2024-10-10 23:17:30,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:30,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2024-10-10 23:17:30,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:30,892 INFO L225 Difference]: With dead ends: 1944 [2024-10-10 23:17:30,893 INFO L226 Difference]: Without dead ends: 1157 [2024-10-10 23:17:30,895 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 [2024-10-10 23:17:30,897 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:30,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 188 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:17:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2024-10-10 23:17:30,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1156. [2024-10-10 23:17:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.2718614718614718) internal successors, (1469), 1155 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:30,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1469 transitions. [2024-10-10 23:17:30,944 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1469 transitions. Word has length 132 [2024-10-10 23:17:30,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:30,944 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1469 transitions. [2024-10-10 23:17:30,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1469 transitions. [2024-10-10 23:17:30,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-10 23:17:30,949 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:30,950 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:30,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 23:17:30,950 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:30,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:30,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1372983940, now seen corresponding path program 1 times [2024-10-10 23:17:30,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:30,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346271007] [2024-10-10 23:17:30,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:30,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:31,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:31,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346271007] [2024-10-10 23:17:31,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346271007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:31,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:31,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:31,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965231160] [2024-10-10 23:17:31,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:31,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:31,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:31,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:31,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:31,220 INFO L87 Difference]: Start difference. First operand 1156 states and 1469 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:32,004 INFO L93 Difference]: Finished difference Result 2518 states and 3351 transitions. [2024-10-10 23:17:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:32,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2024-10-10 23:17:32,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:32,011 INFO L225 Difference]: With dead ends: 2518 [2024-10-10 23:17:32,011 INFO L226 Difference]: Without dead ends: 1547 [2024-10-10 23:17:32,012 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 [2024-10-10 23:17:32,013 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 171 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:32,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 319 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:17:32,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2024-10-10 23:17:32,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1544. [2024-10-10 23:17:32,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 1.2942320155541154) internal successors, (1997), 1543 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1997 transitions. [2024-10-10 23:17:32,041 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1997 transitions. Word has length 190 [2024-10-10 23:17:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:32,042 INFO L471 AbstractCegarLoop]: Abstraction has 1544 states and 1997 transitions. [2024-10-10 23:17:32,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1997 transitions. [2024-10-10 23:17:32,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-10-10 23:17:32,046 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:32,046 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:32,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 23:17:32,047 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:32,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:32,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1643219767, now seen corresponding path program 1 times [2024-10-10 23:17:32,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:32,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376984116] [2024-10-10 23:17:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:32,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:32,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:32,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376984116] [2024-10-10 23:17:32,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376984116] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:32,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:32,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:32,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338873127] [2024-10-10 23:17:32,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:32,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:32,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:32,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:32,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:32,312 INFO L87 Difference]: Start difference. First operand 1544 states and 1997 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:33,136 INFO L93 Difference]: Finished difference Result 3655 states and 4825 transitions. [2024-10-10 23:17:33,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 [2024-10-10 23:17:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:33,150 INFO L225 Difference]: With dead ends: 3655 [2024-10-10 23:17:33,151 INFO L226 Difference]: Without dead ends: 2296 [2024-10-10 23:17:33,154 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 [2024-10-10 23:17:33,158 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 136 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:33,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 337 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 23:17:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2024-10-10 23:17:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2099. [2024-10-10 23:17:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 1.2707340324118208) internal successors, (2666), 2098 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2666 transitions. [2024-10-10 23:17:33,205 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2666 transitions. Word has length 243 [2024-10-10 23:17:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:33,205 INFO L471 AbstractCegarLoop]: Abstraction has 2099 states and 2666 transitions. [2024-10-10 23:17:33,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2666 transitions. [2024-10-10 23:17:33,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-10-10 23:17:33,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:33,211 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:17:33,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 23:17:33,211 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:33,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1443550765, now seen corresponding path program 1 times [2024-10-10 23:17:33,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:33,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51947360] [2024-10-10 23:17:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:33,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-10 23:17:33,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:33,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51947360] [2024-10-10 23:17:33,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51947360] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:33,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:33,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:33,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178923439] [2024-10-10 23:17:33,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:33,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:33,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:33,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:33,479 INFO L87 Difference]: Start difference. First operand 2099 states and 2666 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:34,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:34,255 INFO L93 Difference]: Finished difference Result 4764 states and 6074 transitions. [2024-10-10 23:17:34,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:34,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 244 [2024-10-10 23:17:34,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:34,266 INFO L225 Difference]: With dead ends: 4764 [2024-10-10 23:17:34,266 INFO L226 Difference]: Without dead ends: 2666 [2024-10-10 23:17:34,270 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 [2024-10-10 23:17:34,272 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 138 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:34,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 342 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:17:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2024-10-10 23:17:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2651. [2024-10-10 23:17:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2650 states have (on average 1.2573584905660378) internal successors, (3332), 2650 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3332 transitions. [2024-10-10 23:17:34,332 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3332 transitions. Word has length 244 [2024-10-10 23:17:34,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:34,334 INFO L471 AbstractCegarLoop]: Abstraction has 2651 states and 3332 transitions. [2024-10-10 23:17:34,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:34,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3332 transitions. [2024-10-10 23:17:34,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-10-10 23:17:34,338 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:34,338 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 23:17:34,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-10 23:17:34,338 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:34,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:34,339 INFO L85 PathProgramCache]: Analyzing trace with hash 360690852, now seen corresponding path program 1 times [2024-10-10 23:17:34,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:34,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170218779] [2024-10-10 23:17:34,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:34,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-10 23:17:34,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:34,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170218779] [2024-10-10 23:17:34,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170218779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:34,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:34,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:17:34,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596281535] [2024-10-10 23:17:34,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:34,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:34,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:34,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:34,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:34,662 INFO L87 Difference]: Start difference. First operand 2651 states and 3332 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:35,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:35,536 INFO L93 Difference]: Finished difference Result 6046 states and 7675 transitions. [2024-10-10 23:17:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:35,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 245 [2024-10-10 23:17:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:35,551 INFO L225 Difference]: With dead ends: 6046 [2024-10-10 23:17:35,551 INFO L226 Difference]: Without dead ends: 3396 [2024-10-10 23:17:35,555 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 [2024-10-10 23:17:35,556 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 133 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:35,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 376 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 23:17:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2024-10-10 23:17:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 3203. [2024-10-10 23:17:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 1.2467207995003122) internal successors, (3992), 3202 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 3992 transitions. [2024-10-10 23:17:35,618 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 3992 transitions. Word has length 245 [2024-10-10 23:17:35,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:35,618 INFO L471 AbstractCegarLoop]: Abstraction has 3203 states and 3992 transitions. [2024-10-10 23:17:35,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:35,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 3992 transitions. [2024-10-10 23:17:35,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-10-10 23:17:35,623 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:35,623 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:35,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-10 23:17:35,624 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:35,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:35,624 INFO L85 PathProgramCache]: Analyzing trace with hash 295274290, now seen corresponding path program 1 times [2024-10-10 23:17:35,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:35,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170821429] [2024-10-10 23:17:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:35,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:36,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:36,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170821429] [2024-10-10 23:17:36,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170821429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:36,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:36,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 23:17:36,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77607870] [2024-10-10 23:17:36,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:36,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:17:36,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:36,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:17:36,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:17:36,055 INFO L87 Difference]: Start difference. First operand 3203 states and 3992 transitions. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:37,331 INFO L93 Difference]: Finished difference Result 11047 states and 13848 transitions. [2024-10-10 23:17:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:17:37,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 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 265 [2024-10-10 23:17:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:37,361 INFO L225 Difference]: With dead ends: 11047 [2024-10-10 23:17:37,361 INFO L226 Difference]: Without dead ends: 7845 [2024-10-10 23:17:37,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:17:37,368 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 272 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:37,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 190 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:17:37,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7845 states. [2024-10-10 23:17:37,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7845 to 7472. [2024-10-10 23:17:37,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7472 states, 7471 states have (on average 1.201177887832954) internal successors, (8974), 7471 states have internal predecessors, (8974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7472 states to 7472 states and 8974 transitions. [2024-10-10 23:17:37,509 INFO L78 Accepts]: Start accepts. Automaton has 7472 states and 8974 transitions. Word has length 265 [2024-10-10 23:17:37,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:37,510 INFO L471 AbstractCegarLoop]: Abstraction has 7472 states and 8974 transitions. [2024-10-10 23:17:37,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:37,511 INFO L276 IsEmpty]: Start isEmpty. Operand 7472 states and 8974 transitions. [2024-10-10 23:17:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-10-10 23:17:37,516 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:37,516 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:37,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 23:17:37,517 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:37,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:37,517 INFO L85 PathProgramCache]: Analyzing trace with hash -508675542, now seen corresponding path program 1 times [2024-10-10 23:17:37,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:37,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77229413] [2024-10-10 23:17:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:37,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-10 23:17:37,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:37,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77229413] [2024-10-10 23:17:37,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77229413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:37,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:37,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:17:37,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269583552] [2024-10-10 23:17:37,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:37,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:37,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:37,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:37,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:17:37,657 INFO L87 Difference]: Start difference. First operand 7472 states and 8974 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:38,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:38,440 INFO L93 Difference]: Finished difference Result 14539 states and 17485 transitions. [2024-10-10 23:17:38,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:38,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2024-10-10 23:17:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:38,469 INFO L225 Difference]: With dead ends: 14539 [2024-10-10 23:17:38,473 INFO L226 Difference]: Without dead ends: 7068 [2024-10-10 23:17:38,485 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 [2024-10-10 23:17:38,486 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 114 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:38,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 150 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:17:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2024-10-10 23:17:38,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 7067. [2024-10-10 23:17:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7067 states, 7066 states have (on average 1.1447778092272856) internal successors, (8089), 7066 states have internal predecessors, (8089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:38,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7067 states to 7067 states and 8089 transitions. [2024-10-10 23:17:38,622 INFO L78 Accepts]: Start accepts. Automaton has 7067 states and 8089 transitions. Word has length 266 [2024-10-10 23:17:38,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:38,622 INFO L471 AbstractCegarLoop]: Abstraction has 7067 states and 8089 transitions. [2024-10-10 23:17:38,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:38,623 INFO L276 IsEmpty]: Start isEmpty. Operand 7067 states and 8089 transitions. [2024-10-10 23:17:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-10-10 23:17:38,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:38,628 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:38,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 23:17:38,629 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:38,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash -890112327, now seen corresponding path program 1 times [2024-10-10 23:17:38,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:38,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246396244] [2024-10-10 23:17:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:38,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:39,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:39,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246396244] [2024-10-10 23:17:39,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246396244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:39,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:17:39,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 23:17:39,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946611474] [2024-10-10 23:17:39,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:39,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:17:39,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:39,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:17:39,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:17:39,091 INFO L87 Difference]: Start difference. First operand 7067 states and 8089 transitions. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:40,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:40,444 INFO L93 Difference]: Finished difference Result 18560 states and 21348 transitions. [2024-10-10 23:17:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:17:40,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 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 275 [2024-10-10 23:17:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:40,475 INFO L225 Difference]: With dead ends: 18560 [2024-10-10 23:17:40,476 INFO L226 Difference]: Without dead ends: 11494 [2024-10-10 23:17:40,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:17:40,486 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 293 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:40,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 103 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:17:40,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11494 states. [2024-10-10 23:17:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11494 to 10198. [2024-10-10 23:17:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10198 states, 10197 states have (on average 1.1447484554280671) internal successors, (11673), 10197 states have internal predecessors, (11673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:40,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10198 states to 10198 states and 11673 transitions. [2024-10-10 23:17:40,653 INFO L78 Accepts]: Start accepts. Automaton has 10198 states and 11673 transitions. Word has length 275 [2024-10-10 23:17:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:40,654 INFO L471 AbstractCegarLoop]: Abstraction has 10198 states and 11673 transitions. [2024-10-10 23:17:40,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:40,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10198 states and 11673 transitions. [2024-10-10 23:17:40,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-10-10 23:17:40,660 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:40,661 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:40,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-10 23:17:40,661 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:40,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:40,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1977154707, now seen corresponding path program 1 times [2024-10-10 23:17:40,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:40,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449110199] [2024-10-10 23:17:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 185 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:41,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:41,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449110199] [2024-10-10 23:17:41,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449110199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:17:41,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398882455] [2024-10-10 23:17:41,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:41,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:17:41,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:17:41,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:17:41,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 23:17:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:41,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 23:17:41,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:17:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 74 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:42,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:17:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 74 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398882455] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:17:44,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:17:44,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-10 23:17:44,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519710479] [2024-10-10 23:17:44,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:17:44,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-10 23:17:44,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:44,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-10 23:17:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-10 23:17:44,305 INFO L87 Difference]: Start difference. First operand 10198 states and 11673 transitions. Second operand has 11 states, 11 states have (on average 45.72727272727273) internal successors, (503), 10 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:47,752 INFO L93 Difference]: Finished difference Result 23199 states and 26568 transitions. [2024-10-10 23:17:47,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 23:17:47,752 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 45.72727272727273) internal successors, (503), 10 states have internal predecessors, (503), 0 states have call successors, (0), 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 277 [2024-10-10 23:17:47,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:47,778 INFO L225 Difference]: With dead ends: 23199 [2024-10-10 23:17:47,779 INFO L226 Difference]: Without dead ends: 12990 [2024-10-10 23:17:47,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2024-10-10 23:17:47,793 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 2136 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3838 mSolverCounterSat, 1053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 4891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1053 IncrementalHoareTripleChecker+Valid, 3838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:47,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2136 Valid, 122 Invalid, 4891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1053 Valid, 3838 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-10 23:17:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2024-10-10 23:17:47,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 11276. [2024-10-10 23:17:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11276 states, 11275 states have (on average 1.109711751662971) internal successors, (12512), 11275 states have internal predecessors, (12512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11276 states to 11276 states and 12512 transitions. [2024-10-10 23:17:47,987 INFO L78 Accepts]: Start accepts. Automaton has 11276 states and 12512 transitions. Word has length 277 [2024-10-10 23:17:47,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:47,988 INFO L471 AbstractCegarLoop]: Abstraction has 11276 states and 12512 transitions. [2024-10-10 23:17:47,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 45.72727272727273) internal successors, (503), 10 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 11276 states and 12512 transitions. [2024-10-10 23:17:47,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-10-10 23:17:47,995 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:47,996 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:48,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 23:17:48,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-10 23:17:48,197 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:48,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:48,197 INFO L85 PathProgramCache]: Analyzing trace with hash -99442233, now seen corresponding path program 1 times [2024-10-10 23:17:48,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:48,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291383371] [2024-10-10 23:17:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:48,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 179 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:48,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:48,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291383371] [2024-10-10 23:17:48,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291383371] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:17:48,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051574634] [2024-10-10 23:17:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:48,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:17:48,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:17:48,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:17:48,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 23:17:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:49,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:17:49,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:17:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:49,430 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:17:49,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051574634] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:49,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:17:49,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 23:17:49,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456645897] [2024-10-10 23:17:49,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:49,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:17:49,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:49,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:17:49,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:17:49,433 INFO L87 Difference]: Start difference. First operand 11276 states and 12512 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:50,386 INFO L93 Difference]: Finished difference Result 23107 states and 25621 transitions. [2024-10-10 23:17:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:17:50,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 296 [2024-10-10 23:17:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:50,407 INFO L225 Difference]: With dead ends: 23107 [2024-10-10 23:17:50,407 INFO L226 Difference]: Without dead ends: 11832 [2024-10-10 23:17:50,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:17:50,421 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 170 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:50,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 163 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 23:17:50,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11832 states. [2024-10-10 23:17:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11832 to 11644. [2024-10-10 23:17:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11644 states, 11643 states have (on average 1.1072747573649404) internal successors, (12892), 11643 states have internal predecessors, (12892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11644 states to 11644 states and 12892 transitions. [2024-10-10 23:17:50,627 INFO L78 Accepts]: Start accepts. Automaton has 11644 states and 12892 transitions. Word has length 296 [2024-10-10 23:17:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:50,628 INFO L471 AbstractCegarLoop]: Abstraction has 11644 states and 12892 transitions. [2024-10-10 23:17:50,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 11644 states and 12892 transitions. [2024-10-10 23:17:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-10-10 23:17:50,637 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:50,638 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:50,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 23:17:50,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:17:50,839 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:50,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1519403698, now seen corresponding path program 1 times [2024-10-10 23:17:50,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:50,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053128345] [2024-10-10 23:17:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:50,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 342 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:51,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:51,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053128345] [2024-10-10 23:17:51,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053128345] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:17:51,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234952647] [2024-10-10 23:17:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:51,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:17:51,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:17:51,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:17:51,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 23:17:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:51,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 23:17:51,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:17:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-10 23:17:52,004 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:17:52,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234952647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:52,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:17:52,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-10 23:17:52,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611879549] [2024-10-10 23:17:52,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:52,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:17:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:17:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:17:52,009 INFO L87 Difference]: Start difference. First operand 11644 states and 12892 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:52,606 INFO L93 Difference]: Finished difference Result 24027 states and 26573 transitions. [2024-10-10 23:17:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:17:52,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 334 [2024-10-10 23:17:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:52,630 INFO L225 Difference]: With dead ends: 24027 [2024-10-10 23:17:52,631 INFO L226 Difference]: Without dead ends: 12200 [2024-10-10 23:17:52,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:17:52,642 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 98 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:52,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 345 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 23:17:52,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12200 states. [2024-10-10 23:17:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12200 to 11828. [2024-10-10 23:17:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11828 states, 11827 states have (on average 1.104591189650799) internal successors, (13064), 11827 states have internal predecessors, (13064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:52,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11828 states to 11828 states and 13064 transitions. [2024-10-10 23:17:52,845 INFO L78 Accepts]: Start accepts. Automaton has 11828 states and 13064 transitions. Word has length 334 [2024-10-10 23:17:52,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:52,846 INFO L471 AbstractCegarLoop]: Abstraction has 11828 states and 13064 transitions. [2024-10-10 23:17:52,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:52,846 INFO L276 IsEmpty]: Start isEmpty. Operand 11828 states and 13064 transitions. [2024-10-10 23:17:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-10-10 23:17:52,861 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:52,862 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-10 23:17:52,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-10 23:17:53,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:17:53,066 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:53,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:53,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1458348326, now seen corresponding path program 1 times [2024-10-10 23:17:53,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:53,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298940942] [2024-10-10 23:17:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:53,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 174 proven. 185 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-10 23:17:54,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:54,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298940942] [2024-10-10 23:17:54,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298940942] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:17:54,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140508640] [2024-10-10 23:17:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:54,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:17:54,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:17:54,064 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:17:54,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 23:17:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:54,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 23:17:54,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:17:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-10 23:17:54,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:17:54,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140508640] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:17:54,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:17:54,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-10 23:17:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83395359] [2024-10-10 23:17:54,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:17:54,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:17:54,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:54,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:17:54,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:17:54,648 INFO L87 Difference]: Start difference. First operand 11828 states and 13064 transitions. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:17:55,391 INFO L93 Difference]: Finished difference Result 24026 states and 26510 transitions. [2024-10-10 23:17:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:17:55,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 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 350 [2024-10-10 23:17:55,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:17:55,408 INFO L225 Difference]: With dead ends: 24026 [2024-10-10 23:17:55,409 INFO L226 Difference]: Without dead ends: 12199 [2024-10-10 23:17:55,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:17:55,419 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 190 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:17:55,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 159 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 23:17:55,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12199 states. [2024-10-10 23:17:55,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12199 to 11276. [2024-10-10 23:17:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11276 states, 11275 states have (on average 1.1049223946784923) internal successors, (12458), 11275 states have internal predecessors, (12458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11276 states to 11276 states and 12458 transitions. [2024-10-10 23:17:55,602 INFO L78 Accepts]: Start accepts. Automaton has 11276 states and 12458 transitions. Word has length 350 [2024-10-10 23:17:55,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:17:55,603 INFO L471 AbstractCegarLoop]: Abstraction has 11276 states and 12458 transitions. [2024-10-10 23:17:55,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:17:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 11276 states and 12458 transitions. [2024-10-10 23:17:55,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-10-10 23:17:55,612 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:17:55,613 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:17:55,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 23:17:55,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-10 23:17:55,814 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:17:55,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:17:55,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1745773722, now seen corresponding path program 1 times [2024-10-10 23:17:55,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:17:55,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272737729] [2024-10-10 23:17:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:55,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:17:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 123 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:56,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:17:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272737729] [2024-10-10 23:17:56,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272737729] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:17:56,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304132434] [2024-10-10 23:17:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:17:56,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:17:56,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:17:56,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:17:56,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 23:17:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:17:56,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 23:17:56,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:17:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 123 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:56,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:17:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 123 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:17:58,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304132434] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:17:58,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:17:58,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-10-10 23:17:58,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082566443] [2024-10-10 23:17:58,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:17:58,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 23:17:58,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:17:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 23:17:58,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:17:58,287 INFO L87 Difference]: Start difference. First operand 11276 states and 12458 transitions. Second operand has 10 states, 10 states have (on average 78.6) internal successors, (786), 9 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:01,210 INFO L93 Difference]: Finished difference Result 37292 states and 41050 transitions. [2024-10-10 23:18:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 23:18:01,210 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 78.6) internal successors, (786), 9 states have internal predecessors, (786), 0 states have call successors, (0), 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 361 [2024-10-10 23:18:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:01,251 INFO L225 Difference]: With dead ends: 37292 [2024-10-10 23:18:01,252 INFO L226 Difference]: Without dead ends: 26017 [2024-10-10 23:18:01,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:18:01,268 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 882 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4266 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 4822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 4266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:01,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 162 Invalid, 4822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 4266 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-10 23:18:01,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26017 states. [2024-10-10 23:18:01,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26017 to 23434. [2024-10-10 23:18:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23434 states, 23433 states have (on average 1.0960611103998634) internal successors, (25684), 23433 states have internal predecessors, (25684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23434 states to 23434 states and 25684 transitions. [2024-10-10 23:18:01,592 INFO L78 Accepts]: Start accepts. Automaton has 23434 states and 25684 transitions. Word has length 361 [2024-10-10 23:18:01,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:01,593 INFO L471 AbstractCegarLoop]: Abstraction has 23434 states and 25684 transitions. [2024-10-10 23:18:01,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 78.6) internal successors, (786), 9 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 23434 states and 25684 transitions. [2024-10-10 23:18:01,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-10-10 23:18:01,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:01,605 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:01,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 23:18:01,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-10 23:18:01,806 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:01,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:01,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1520819071, now seen corresponding path program 1 times [2024-10-10 23:18:01,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:01,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328186872] [2024-10-10 23:18:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 370 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:02,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:02,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328186872] [2024-10-10 23:18:02,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328186872] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:02,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765320318] [2024-10-10 23:18:02,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:02,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:02,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:02,545 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:02,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 23:18:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:02,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 23:18:02,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 185 proven. 179 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-10 23:18:03,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:18:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-10 23:18:05,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765320318] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:05,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 23:18:05,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 8 [2024-10-10 23:18:05,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91045957] [2024-10-10 23:18:05,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:05,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:18:05,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:05,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:18:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:18:05,022 INFO L87 Difference]: Start difference. First operand 23434 states and 25684 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:05,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:05,718 INFO L93 Difference]: Finished difference Result 48348 states and 53031 transitions. [2024-10-10 23:18:05,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:18:05,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 372 [2024-10-10 23:18:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:05,751 INFO L225 Difference]: With dead ends: 48348 [2024-10-10 23:18:05,751 INFO L226 Difference]: Without dead ends: 24915 [2024-10-10 23:18:05,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:18:05,772 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 123 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:05,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 50 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 23:18:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24915 states. [2024-10-10 23:18:05,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24915 to 17542. [2024-10-10 23:18:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17542 states, 17541 states have (on average 1.086027022404652) internal successors, (19050), 17541 states have internal predecessors, (19050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17542 states to 17542 states and 19050 transitions. [2024-10-10 23:18:06,033 INFO L78 Accepts]: Start accepts. Automaton has 17542 states and 19050 transitions. Word has length 372 [2024-10-10 23:18:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:06,034 INFO L471 AbstractCegarLoop]: Abstraction has 17542 states and 19050 transitions. [2024-10-10 23:18:06,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:06,034 INFO L276 IsEmpty]: Start isEmpty. Operand 17542 states and 19050 transitions. [2024-10-10 23:18:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-10-10 23:18:06,046 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:06,046 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:06,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 23:18:06,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-10 23:18:06,248 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:06,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:06,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1966509206, now seen corresponding path program 1 times [2024-10-10 23:18:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:06,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797829046] [2024-10-10 23:18:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:06,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 283 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:07,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797829046] [2024-10-10 23:18:07,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797829046] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77840632] [2024-10-10 23:18:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:07,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:07,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:07,106 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:07,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 23:18:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:07,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 23:18:07,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 283 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:08,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:18:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 283 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:10,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77840632] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:18:10,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:18:10,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-10 23:18:10,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610296874] [2024-10-10 23:18:10,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:18:10,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 23:18:10,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:10,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 23:18:10,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:18:10,478 INFO L87 Difference]: Start difference. First operand 17542 states and 19050 transitions. Second operand has 10 states, 10 states have (on average 73.3) internal successors, (733), 9 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:12,825 INFO L93 Difference]: Finished difference Result 36221 states and 39281 transitions. [2024-10-10 23:18:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-10 23:18:12,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 73.3) internal successors, (733), 9 states have internal predecessors, (733), 0 states have call successors, (0), 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 414 [2024-10-10 23:18:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:12,846 INFO L225 Difference]: With dead ends: 36221 [2024-10-10 23:18:12,846 INFO L226 Difference]: Without dead ends: 19048 [2024-10-10 23:18:12,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-10-10 23:18:12,860 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1325 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 3172 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 3172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:12,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 92 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 3172 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-10 23:18:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19048 states. [2024-10-10 23:18:13,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19048 to 14046. [2024-10-10 23:18:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14046 states, 14045 states have (on average 1.0810252758988963) internal successors, (15183), 14045 states have internal predecessors, (15183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14046 states to 14046 states and 15183 transitions. [2024-10-10 23:18:13,051 INFO L78 Accepts]: Start accepts. Automaton has 14046 states and 15183 transitions. Word has length 414 [2024-10-10 23:18:13,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:13,051 INFO L471 AbstractCegarLoop]: Abstraction has 14046 states and 15183 transitions. [2024-10-10 23:18:13,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.3) internal successors, (733), 9 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 14046 states and 15183 transitions. [2024-10-10 23:18:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-10-10 23:18:13,059 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:13,060 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:13,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 23:18:13,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-10 23:18:13,261 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:13,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:13,261 INFO L85 PathProgramCache]: Analyzing trace with hash 204065922, now seen corresponding path program 1 times [2024-10-10 23:18:13,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:13,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970987705] [2024-10-10 23:18:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:13,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-10 23:18:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:13,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970987705] [2024-10-10 23:18:13,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970987705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:18:13,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:18:13,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:18:13,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12247250] [2024-10-10 23:18:13,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:18:13,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:18:13,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:13,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:18:13,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:18:13,506 INFO L87 Difference]: Start difference. First operand 14046 states and 15183 transitions. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:14,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:14,453 INFO L93 Difference]: Finished difference Result 34179 states and 36947 transitions. [2024-10-10 23:18:14,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:18:14,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 415 [2024-10-10 23:18:14,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:14,473 INFO L225 Difference]: With dead ends: 34179 [2024-10-10 23:18:14,473 INFO L226 Difference]: Without dead ends: 20134 [2024-10-10 23:18:14,484 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 [2024-10-10 23:18:14,484 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 206 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:14,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 65 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 23:18:14,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20134 states. [2024-10-10 23:18:14,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20134 to 19022. [2024-10-10 23:18:14,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19022 states, 19021 states have (on average 1.0806477051679722) internal successors, (20555), 19021 states have internal predecessors, (20555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19022 states to 19022 states and 20555 transitions. [2024-10-10 23:18:14,738 INFO L78 Accepts]: Start accepts. Automaton has 19022 states and 20555 transitions. Word has length 415 [2024-10-10 23:18:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:14,738 INFO L471 AbstractCegarLoop]: Abstraction has 19022 states and 20555 transitions. [2024-10-10 23:18:14,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 19022 states and 20555 transitions. [2024-10-10 23:18:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-10-10 23:18:14,747 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:14,747 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:18:14,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-10 23:18:14,748 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:14,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash -750855781, now seen corresponding path program 1 times [2024-10-10 23:18:14,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:14,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947154525] [2024-10-10 23:18:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:14,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 154 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:15,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:15,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947154525] [2024-10-10 23:18:15,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947154525] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:15,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540264564] [2024-10-10 23:18:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:15,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:15,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:15,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:15,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 23:18:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:16,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 23:18:16,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 154 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:17,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:18:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 275 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:19,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540264564] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:18:19,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:18:19,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-10 23:18:19,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384093491] [2024-10-10 23:18:19,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:18:19,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-10 23:18:19,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:19,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-10 23:18:19,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2024-10-10 23:18:19,769 INFO L87 Difference]: Start difference. First operand 19022 states and 20555 transitions. Second operand has 13 states, 13 states have (on average 104.6923076923077) internal successors, (1361), 12 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:18:23,324 INFO L93 Difference]: Finished difference Result 40983 states and 44510 transitions. [2024-10-10 23:18:23,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-10 23:18:23,325 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 104.6923076923077) internal successors, (1361), 12 states have internal predecessors, (1361), 0 states have call successors, (0), 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 475 [2024-10-10 23:18:23,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:18:23,356 INFO L225 Difference]: With dead ends: 40983 [2024-10-10 23:18:23,356 INFO L226 Difference]: Without dead ends: 21594 [2024-10-10 23:18:23,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2024-10-10 23:18:23,370 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1165 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 5937 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 5937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:18:23,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 156 Invalid, 6362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 5937 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-10 23:18:23,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21594 states. [2024-10-10 23:18:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21594 to 18827. [2024-10-10 23:18:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18827 states, 18826 states have (on average 1.070168915329863) internal successors, (20147), 18826 states have internal predecessors, (20147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18827 states to 18827 states and 20147 transitions. [2024-10-10 23:18:23,592 INFO L78 Accepts]: Start accepts. Automaton has 18827 states and 20147 transitions. Word has length 475 [2024-10-10 23:18:23,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:18:23,593 INFO L471 AbstractCegarLoop]: Abstraction has 18827 states and 20147 transitions. [2024-10-10 23:18:23,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.6923076923077) internal successors, (1361), 12 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:18:23,593 INFO L276 IsEmpty]: Start isEmpty. Operand 18827 states and 20147 transitions. [2024-10-10 23:18:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2024-10-10 23:18:23,612 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:18:23,612 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:18:23,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 23:18:23,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:23,813 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:18:23,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:18:23,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1753678581, now seen corresponding path program 1 times [2024-10-10 23:18:23,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:18:23,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877847699] [2024-10-10 23:18:23,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:23,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:18:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 186 proven. 942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:25,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:18:25,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877847699] [2024-10-10 23:18:25,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877847699] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:18:25,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995283765] [2024-10-10 23:18:25,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:18:25,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:18:25,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:18:25,138 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:18:25,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 23:18:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:18:25,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-10 23:18:25,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:18:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 62 proven. 1066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:18:26,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:18:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 771 proven. 233 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-10-10 23:18:31,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995283765] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 23:18:31,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 23:18:31,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 17 [2024-10-10 23:18:31,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125366918] [2024-10-10 23:18:31,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 23:18:31,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-10 23:18:31,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:18:31,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-10 23:18:31,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-10-10 23:18:31,200 INFO L87 Difference]: Start difference. First operand 18827 states and 20147 transitions. Second operand has 17 states, 17 states have (on average 116.88235294117646) internal successors, (1987), 17 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)