./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5076c3e55bd424afffa48cc9c2c4663afdcf72b1cbafe747c454c6704690d793 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:22:37,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:22:37,118 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:22:37,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:22:37,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:22:37,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:22:37,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:22:37,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:22:37,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:22:37,148 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:22:37,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:22:37,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:22:37,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:22:37,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:22:37,151 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:22:37,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:22:37,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:22:37,151 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:22:37,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:22:37,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:22:37,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:22:37,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:22:37,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:22:37,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:22:37,155 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:22:37,155 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:22:37,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:22:37,155 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:22:37,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:22:37,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:22:37,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:22:37,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:22:37,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:22:37,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:22:37,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:22:37,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:22:37,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:22:37,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:22:37,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:22:37,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:22:37,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:22:37,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:22:37,158 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5076c3e55bd424afffa48cc9c2c4663afdcf72b1cbafe747c454c6704690d793 [2024-10-12 21:22:37,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:22:37,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:22:37,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:22:37,361 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:22:37,361 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:22:37,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2024-10-12 21:22:38,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:22:38,986 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:22:38,987 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2024-10-12 21:22:39,019 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1643a3306/b49c04bbb2e148568f6fcd8552d01447/FLAG409e55fed [2024-10-12 21:22:39,033 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1643a3306/b49c04bbb2e148568f6fcd8552d01447 [2024-10-12 21:22:39,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:22:39,037 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:22:39,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:22:39,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:22:39,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:22:39,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:22:39" (1/1) ... [2024-10-12 21:22:39,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d995a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:39, skipping insertion in model container [2024-10-12 21:22:39,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:22:39" (1/1) ... [2024-10-12 21:22:39,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:22:39,384 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[6354,6367] [2024-10-12 21:22:39,442 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[14102,14115] [2024-10-12 21:22:39,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:22:39,967 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:22:39,982 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[6354,6367] [2024-10-12 21:22:39,989 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[14102,14115] [2024-10-12 21:22:40,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:22:40,370 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:22:40,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40 WrapperNode [2024-10-12 21:22:40,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:22:40,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:22:40,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:22:40,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:22:40,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:40,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:40,642 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4983 [2024-10-12 21:22:40,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:22:40,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:22:40,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:22:40,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:22:40,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:40,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:40,683 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:40,942 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 21:22:40,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:40,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:41,128 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:41,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:41,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:41,233 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:41,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:22:41,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:22:41,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:22:41,295 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:22:41,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (1/1) ... [2024-10-12 21:22:41,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:22:41,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:22:41,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 21:22:41,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 21:22:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:22:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:22:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:22:41,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:22:41,455 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:22:41,457 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:22:44,709 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-10-12 21:22:44,709 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:22:44,774 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:22:44,775 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 21:22:44,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:22:44 BoogieIcfgContainer [2024-10-12 21:22:44,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:22:44,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:22:44,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:22:44,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:22:44,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:22:39" (1/3) ... [2024-10-12 21:22:44,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fc6b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:22:44, skipping insertion in model container [2024-10-12 21:22:44,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:22:40" (2/3) ... [2024-10-12 21:22:44,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fc6b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:22:44, skipping insertion in model container [2024-10-12 21:22:44,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:22:44" (3/3) ... [2024-10-12 21:22:44,788 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2024-10-12 21:22:44,813 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:22:44,817 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:22:44,888 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:22:44,893 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;@5cb7f9fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:22:44,893 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:22:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-12 21:22:44,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:44,905 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:22:44,905 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:44,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:44,909 INFO L85 PathProgramCache]: Analyzing trace with hash 993688809, now seen corresponding path program 1 times [2024-10-12 21:22:44,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:44,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095463012] [2024-10-12 21:22:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:44,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:45,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:45,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095463012] [2024-10-12 21:22:45,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095463012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:45,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:45,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 21:22:45,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438208257] [2024-10-12 21:22:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:45,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 21:22:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 21:22:45,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:22:45,111 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:45,195 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2024-10-12 21:22:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 21:22:45,197 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-10-12 21:22:45,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:45,218 INFO L225 Difference]: With dead ends: 1594 [2024-10-12 21:22:45,218 INFO L226 Difference]: Without dead ends: 803 [2024-10-12 21:22:45,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:22:45,228 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:45,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:45,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-10-12 21:22:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2024-10-12 21:22:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2024-10-12 21:22:45,310 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2024-10-12 21:22:45,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:45,310 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2024-10-12 21:22:45,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2024-10-12 21:22:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-12 21:22:45,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:45,312 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:22:45,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:22:45,313 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:45,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:45,313 INFO L85 PathProgramCache]: Analyzing trace with hash 406882795, now seen corresponding path program 1 times [2024-10-12 21:22:45,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:45,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656342159] [2024-10-12 21:22:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:45,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:45,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:45,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656342159] [2024-10-12 21:22:45,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656342159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:45,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:45,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:22:45,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104673933] [2024-10-12 21:22:45,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:45,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:22:45,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:22:45,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:22:45,464 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:45,541 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2024-10-12 21:22:45,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:22:45,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-10-12 21:22:45,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:45,544 INFO L225 Difference]: With dead ends: 864 [2024-10-12 21:22:45,544 INFO L226 Difference]: Without dead ends: 832 [2024-10-12 21:22:45,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:22:45,546 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:45,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2024-10-12 21:22:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2024-10-12 21:22:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2024-10-12 21:22:45,561 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2024-10-12 21:22:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:45,561 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2024-10-12 21:22:45,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2024-10-12 21:22:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-12 21:22:45,562 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:45,563 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] [2024-10-12 21:22:45,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:22:45,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:45,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:45,563 INFO L85 PathProgramCache]: Analyzing trace with hash 843919889, now seen corresponding path program 1 times [2024-10-12 21:22:45,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:45,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637644356] [2024-10-12 21:22:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:45,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:45,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:45,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637644356] [2024-10-12 21:22:45,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637644356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:45,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:45,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:22:45,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984170658] [2024-10-12 21:22:45,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:45,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:22:45,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:45,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:22:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:22:45,687 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:45,836 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2024-10-12 21:22:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:22:45,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2024-10-12 21:22:45,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:45,841 INFO L225 Difference]: With dead ends: 977 [2024-10-12 21:22:45,842 INFO L226 Difference]: Without dead ends: 948 [2024-10-12 21:22:45,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:22:45,845 INFO L432 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:45,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:22:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2024-10-12 21:22:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2024-10-12 21:22:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2024-10-12 21:22:45,860 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2024-10-12 21:22:45,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:45,861 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2024-10-12 21:22:45,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2024-10-12 21:22:45,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 21:22:45,862 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:45,863 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] [2024-10-12 21:22:45,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:22:45,863 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:45,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash -864495967, now seen corresponding path program 1 times [2024-10-12 21:22:45,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:45,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996204041] [2024-10-12 21:22:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:45,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:45,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996204041] [2024-10-12 21:22:45,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996204041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:45,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:45,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:22:45,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231403703] [2024-10-12 21:22:45,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:45,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:22:45,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:45,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:22:45,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:45,930 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:45,960 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2024-10-12 21:22:45,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:22:45,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-12 21:22:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:45,962 INFO L225 Difference]: With dead ends: 931 [2024-10-12 21:22:45,963 INFO L226 Difference]: Without dead ends: 875 [2024-10-12 21:22:45,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:45,964 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:45,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-10-12 21:22:45,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2024-10-12 21:22:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2024-10-12 21:22:45,976 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2024-10-12 21:22:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:45,976 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2024-10-12 21:22:45,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2024-10-12 21:22:45,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 21:22:45,977 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:45,977 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] [2024-10-12 21:22:45,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:22:45,978 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:45,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:45,978 INFO L85 PathProgramCache]: Analyzing trace with hash -862351015, now seen corresponding path program 1 times [2024-10-12 21:22:45,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:45,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462038052] [2024-10-12 21:22:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:45,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:46,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:46,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462038052] [2024-10-12 21:22:46,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462038052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:46,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:46,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:22:46,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578791900] [2024-10-12 21:22:46,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:46,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:22:46,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:46,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:22:46,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:22:46,135 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:46,210 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2024-10-12 21:22:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:22:46,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-12 21:22:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:46,213 INFO L225 Difference]: With dead ends: 974 [2024-10-12 21:22:46,213 INFO L226 Difference]: Without dead ends: 875 [2024-10-12 21:22:46,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:22:46,214 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 1473 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:46,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1620 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:46,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-10-12 21:22:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2024-10-12 21:22:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2024-10-12 21:22:46,228 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2024-10-12 21:22:46,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:46,228 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2024-10-12 21:22:46,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,228 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2024-10-12 21:22:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-12 21:22:46,229 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:46,229 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] [2024-10-12 21:22:46,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:22:46,229 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:46,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1091432520, now seen corresponding path program 1 times [2024-10-12 21:22:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:46,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288132075] [2024-10-12 21:22:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:46,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:46,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:46,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288132075] [2024-10-12 21:22:46,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288132075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:46,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:46,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:22:46,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969989780] [2024-10-12 21:22:46,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:46,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:22:46,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:22:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:22:46,326 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:46,355 INFO L93 Difference]: Finished difference Result 879 states and 1619 transitions. [2024-10-12 21:22:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:22:46,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2024-10-12 21:22:46,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:46,358 INFO L225 Difference]: With dead ends: 879 [2024-10-12 21:22:46,358 INFO L226 Difference]: Without dead ends: 877 [2024-10-12 21:22:46,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:22:46,359 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 0 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:46,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:46,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-10-12 21:22:46,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2024-10-12 21:22:46,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2024-10-12 21:22:46,369 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2024-10-12 21:22:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:46,370 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2024-10-12 21:22:46,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2024-10-12 21:22:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 21:22:46,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:46,370 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] [2024-10-12 21:22:46,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 21:22:46,371 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:46,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash -776070311, now seen corresponding path program 1 times [2024-10-12 21:22:46,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:46,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620032716] [2024-10-12 21:22:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:46,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:46,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:46,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620032716] [2024-10-12 21:22:46,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620032716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:46,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:46,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:22:46,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910891833] [2024-10-12 21:22:46,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:46,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:22:46,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:46,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:22:46,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:46,405 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:46,426 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2024-10-12 21:22:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:22:46,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-10-12 21:22:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:46,429 INFO L225 Difference]: With dead ends: 991 [2024-10-12 21:22:46,429 INFO L226 Difference]: Without dead ends: 931 [2024-10-12 21:22:46,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:46,430 INFO L432 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:46,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:46,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-10-12 21:22:46,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2024-10-12 21:22:46,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2024-10-12 21:22:46,443 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2024-10-12 21:22:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:46,443 INFO L471 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2024-10-12 21:22:46,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,443 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2024-10-12 21:22:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 21:22:46,443 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:46,443 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] [2024-10-12 21:22:46,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 21:22:46,444 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:46,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1401726375, now seen corresponding path program 1 times [2024-10-12 21:22:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:46,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260100208] [2024-10-12 21:22:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:46,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:46,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260100208] [2024-10-12 21:22:46,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260100208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:46,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:46,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:22:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753667078] [2024-10-12 21:22:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:46,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:22:46,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:22:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:46,477 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:46,498 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2024-10-12 21:22:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:22:46,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-10-12 21:22:46,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:46,501 INFO L225 Difference]: With dead ends: 1211 [2024-10-12 21:22:46,501 INFO L226 Difference]: Without dead ends: 1058 [2024-10-12 21:22:46,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:46,502 INFO L432 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:46,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2024-10-12 21:22:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2024-10-12 21:22:46,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2024-10-12 21:22:46,515 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2024-10-12 21:22:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:46,515 INFO L471 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2024-10-12 21:22:46,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2024-10-12 21:22:46,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 21:22:46,516 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:46,516 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] [2024-10-12 21:22:46,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 21:22:46,516 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:46,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash -512992935, now seen corresponding path program 1 times [2024-10-12 21:22:46,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:46,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114712647] [2024-10-12 21:22:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:46,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:46,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:46,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114712647] [2024-10-12 21:22:46,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114712647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:46,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:46,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:22:46,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138334723] [2024-10-12 21:22:46,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:46,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:22:46,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:46,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:22:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:46,546 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:46,591 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2024-10-12 21:22:46,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:22:46,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-10-12 21:22:46,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:46,595 INFO L225 Difference]: With dead ends: 1568 [2024-10-12 21:22:46,595 INFO L226 Difference]: Without dead ends: 1288 [2024-10-12 21:22:46,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:46,596 INFO L432 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:46,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2024-10-12 21:22:46,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2024-10-12 21:22:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2024-10-12 21:22:46,613 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2024-10-12 21:22:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:46,613 INFO L471 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2024-10-12 21:22:46,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2024-10-12 21:22:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 21:22:46,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:46,614 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:22:46,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:22:46,614 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:46,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:46,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1634806921, now seen corresponding path program 1 times [2024-10-12 21:22:46,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:46,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147829649] [2024-10-12 21:22:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:46,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:22:46,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147829649] [2024-10-12 21:22:46,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147829649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:46,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:46,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:22:46,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102786053] [2024-10-12 21:22:46,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:46,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:22:46,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:46,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:22:46,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:22:46,686 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:46,764 INFO L93 Difference]: Finished difference Result 2794 states and 4342 transitions. [2024-10-12 21:22:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:22:46,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 50 [2024-10-12 21:22:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:46,771 INFO L225 Difference]: With dead ends: 2794 [2024-10-12 21:22:46,771 INFO L226 Difference]: Without dead ends: 2424 [2024-10-12 21:22:46,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:22:46,772 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 3031 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:46,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 3153 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:46,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2024-10-12 21:22:46,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1726. [2024-10-12 21:22:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6299303944315546) internal successors, (2810), 1725 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2810 transitions. [2024-10-12 21:22:46,799 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2810 transitions. Word has length 50 [2024-10-12 21:22:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:46,799 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2810 transitions. [2024-10-12 21:22:46,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2810 transitions. [2024-10-12 21:22:46,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 21:22:46,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:46,800 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:22:46,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 21:22:46,801 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:46,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1009150857, now seen corresponding path program 1 times [2024-10-12 21:22:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:46,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064717001] [2024-10-12 21:22:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:46,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:22:46,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064717001] [2024-10-12 21:22:46,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064717001] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:46,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:46,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:22:46,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777170867] [2024-10-12 21:22:46,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:46,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:22:46,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:46,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:22:46,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:22:46,875 INFO L87 Difference]: Start difference. First operand 1726 states and 2810 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:46,955 INFO L93 Difference]: Finished difference Result 3302 states and 5062 transitions. [2024-10-12 21:22:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:22:46,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 50 [2024-10-12 21:22:46,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:46,962 INFO L225 Difference]: With dead ends: 3302 [2024-10-12 21:22:46,962 INFO L226 Difference]: Without dead ends: 2792 [2024-10-12 21:22:46,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:22:46,963 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 3035 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3035 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:46,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3035 Valid, 3130 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:46,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2024-10-12 21:22:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2418. [2024-10-12 21:22:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2024-10-12 21:22:47,003 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 50 [2024-10-12 21:22:47,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:47,003 INFO L471 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2024-10-12 21:22:47,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2024-10-12 21:22:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 21:22:47,004 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:47,004 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:22:47,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 21:22:47,005 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:47,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:47,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1897884297, now seen corresponding path program 1 times [2024-10-12 21:22:47,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:47,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670169733] [2024-10-12 21:22:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:47,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 21:22:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:47,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670169733] [2024-10-12 21:22:47,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670169733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:47,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:47,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:22:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3199220] [2024-10-12 21:22:47,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:47,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:22:47,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:47,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:22:47,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:22:47,070 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:47,153 INFO L93 Difference]: Finished difference Result 3810 states and 5778 transitions. [2024-10-12 21:22:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:22:47,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 50 [2024-10-12 21:22:47,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:47,161 INFO L225 Difference]: With dead ends: 3810 [2024-10-12 21:22:47,162 INFO L226 Difference]: Without dead ends: 3300 [2024-10-12 21:22:47,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:22:47,163 INFO L432 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:47,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:47,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2024-10-12 21:22:47,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2926. [2024-10-12 21:22:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5383036935704515) internal successors, (4498), 2925 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4498 transitions. [2024-10-12 21:22:47,211 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4498 transitions. Word has length 50 [2024-10-12 21:22:47,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:47,211 INFO L471 AbstractCegarLoop]: Abstraction has 2926 states and 4498 transitions. [2024-10-12 21:22:47,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4498 transitions. [2024-10-12 21:22:47,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 21:22:47,212 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:47,212 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:22:47,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 21:22:47,212 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:47,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:47,213 INFO L85 PathProgramCache]: Analyzing trace with hash -421665673, now seen corresponding path program 1 times [2024-10-12 21:22:47,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:47,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102909939] [2024-10-12 21:22:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:47,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:47,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:47,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102909939] [2024-10-12 21:22:47,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102909939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:47,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:47,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:22:47,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524194422] [2024-10-12 21:22:47,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:47,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:22:47,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:47,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:22:47,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:47,269 INFO L87 Difference]: Start difference. First operand 2926 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:47,309 INFO L93 Difference]: Finished difference Result 5078 states and 7536 transitions. [2024-10-12 21:22:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:22:47,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-10-12 21:22:47,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:47,317 INFO L225 Difference]: With dead ends: 5078 [2024-10-12 21:22:47,317 INFO L226 Difference]: Without dead ends: 2928 [2024-10-12 21:22:47,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:47,319 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:47,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2024-10-12 21:22:47,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2926. [2024-10-12 21:22:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5212038303693571) internal successors, (4448), 2925 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4448 transitions. [2024-10-12 21:22:47,366 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4448 transitions. Word has length 51 [2024-10-12 21:22:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:47,366 INFO L471 AbstractCegarLoop]: Abstraction has 2926 states and 4448 transitions. [2024-10-12 21:22:47,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4448 transitions. [2024-10-12 21:22:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 21:22:47,367 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:47,367 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:22:47,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 21:22:47,367 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:47,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:47,367 INFO L85 PathProgramCache]: Analyzing trace with hash -989180719, now seen corresponding path program 1 times [2024-10-12 21:22:47,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:47,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196340726] [2024-10-12 21:22:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:47,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:47,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:47,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196340726] [2024-10-12 21:22:47,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196340726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:47,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:47,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:22:47,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892935048] [2024-10-12 21:22:47,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:47,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:22:47,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:47,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:22:47,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:47,490 INFO L87 Difference]: Start difference. First operand 2926 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:47,532 INFO L93 Difference]: Finished difference Result 3772 states and 5635 transitions. [2024-10-12 21:22:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:22:47,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-10-12 21:22:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:47,537 INFO L225 Difference]: With dead ends: 3772 [2024-10-12 21:22:47,537 INFO L226 Difference]: Without dead ends: 1622 [2024-10-12 21:22:47,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:47,539 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:47,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2024-10-12 21:22:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1615. [2024-10-12 21:22:47,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.6261624302541848) internal successors, (2623), 1614 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2623 transitions. [2024-10-12 21:22:47,573 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2623 transitions. Word has length 52 [2024-10-12 21:22:47,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:47,573 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 2623 transitions. [2024-10-12 21:22:47,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2623 transitions. [2024-10-12 21:22:47,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-12 21:22:47,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:47,574 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:22:47,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 21:22:47,574 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:47,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:47,575 INFO L85 PathProgramCache]: Analyzing trace with hash -241803387, now seen corresponding path program 1 times [2024-10-12 21:22:47,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:47,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375858305] [2024-10-12 21:22:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:47,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:47,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:47,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375858305] [2024-10-12 21:22:47,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375858305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:22:47,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:22:47,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:22:47,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011245636] [2024-10-12 21:22:47,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:22:47,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:22:47,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:47,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:22:47,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:47,657 INFO L87 Difference]: Start difference. First operand 1615 states and 2623 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:47,692 INFO L93 Difference]: Finished difference Result 2033 states and 3201 transitions. [2024-10-12 21:22:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:22:47,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-12 21:22:47,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:47,695 INFO L225 Difference]: With dead ends: 2033 [2024-10-12 21:22:47,696 INFO L226 Difference]: Without dead ends: 1203 [2024-10-12 21:22:47,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:22:47,700 INFO L432 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:47,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:22:47,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2024-10-12 21:22:47,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2024-10-12 21:22:47,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1199 states have (on average 1.6997497914929107) internal successors, (2038), 1200 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2038 transitions. [2024-10-12 21:22:47,731 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2038 transitions. Word has length 53 [2024-10-12 21:22:47,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:47,731 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 2038 transitions. [2024-10-12 21:22:47,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2038 transitions. [2024-10-12 21:22:47,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 21:22:47,732 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:47,732 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:22:47,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 21:22:47,732 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:47,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1471908845, now seen corresponding path program 1 times [2024-10-12 21:22:47,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:47,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524670993] [2024-10-12 21:22:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:47,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:49,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:49,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524670993] [2024-10-12 21:22:49,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524670993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:22:49,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958037764] [2024-10-12 21:22:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:49,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:22:49,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:22:49,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:22:49,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:22:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:49,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 21:22:49,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:22:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:49,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:22:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958037764] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:22:50,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:22:50,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-12 21:22:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462582255] [2024-10-12 21:22:50,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:22:50,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 21:22:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:50,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 21:22:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-10-12 21:22:50,052 INFO L87 Difference]: Start difference. First operand 1201 states and 2038 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 27 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:52,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:52,250 INFO L93 Difference]: Finished difference Result 2759 states and 4158 transitions. [2024-10-12 21:22:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-12 21:22:52,251 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 27 states have internal predecessors, (142), 0 states have call successors, (0), 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 55 [2024-10-12 21:22:52,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:52,259 INFO L225 Difference]: With dead ends: 2759 [2024-10-12 21:22:52,262 INFO L226 Difference]: Without dead ends: 2343 [2024-10-12 21:22:52,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=813, Invalid=3093, Unknown=0, NotChecked=0, Total=3906 [2024-10-12 21:22:52,264 INFO L432 NwaCegarLoop]: 1477 mSDtfsCounter, 24398 mSDsluCounter, 6190 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24398 SdHoareTripleChecker+Valid, 7667 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:52,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24398 Valid, 7667 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:22:52,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2024-10-12 21:22:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2290. [2024-10-12 21:22:52,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2290 states, 2288 states have (on average 1.5201048951048952) internal successors, (3478), 2289 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3478 transitions. [2024-10-12 21:22:52,324 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3478 transitions. Word has length 55 [2024-10-12 21:22:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:52,324 INFO L471 AbstractCegarLoop]: Abstraction has 2290 states and 3478 transitions. [2024-10-12 21:22:52,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 27 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3478 transitions. [2024-10-12 21:22:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 21:22:52,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:52,325 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:22:52,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 21:22:52,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 21:22:52,530 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:52,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1901257213, now seen corresponding path program 1 times [2024-10-12 21:22:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:52,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22916808] [2024-10-12 21:22:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:52,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:52,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:52,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22916808] [2024-10-12 21:22:52,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22916808] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:22:52,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377572637] [2024-10-12 21:22:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:52,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:22:52,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:22:52,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:22:52,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 21:22:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:52,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 21:22:52,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:22:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:53,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:22:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:53,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377572637] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:22:53,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:22:53,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-10-12 21:22:53,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371516091] [2024-10-12 21:22:53,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:22:53,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-12 21:22:53,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:53,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-12 21:22:53,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-10-12 21:22:53,598 INFO L87 Difference]: Start difference. First operand 2290 states and 3478 transitions. Second operand has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:53,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:53,910 INFO L93 Difference]: Finished difference Result 5086 states and 7234 transitions. [2024-10-12 21:22:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 21:22:53,911 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 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 56 [2024-10-12 21:22:53,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:53,919 INFO L225 Difference]: With dead ends: 5086 [2024-10-12 21:22:53,919 INFO L226 Difference]: Without dead ends: 3581 [2024-10-12 21:22:53,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=692, Unknown=0, NotChecked=0, Total=930 [2024-10-12 21:22:53,925 INFO L432 NwaCegarLoop]: 1481 mSDtfsCounter, 13602 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13602 SdHoareTripleChecker+Valid, 4564 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:53,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13602 Valid, 4564 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:22:53,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2024-10-12 21:22:54,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3577. [2024-10-12 21:22:54,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 3575 states have (on average 1.4537062937062937) internal successors, (5197), 3576 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:54,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 5197 transitions. [2024-10-12 21:22:54,078 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 5197 transitions. Word has length 56 [2024-10-12 21:22:54,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:54,078 INFO L471 AbstractCegarLoop]: Abstraction has 3577 states and 5197 transitions. [2024-10-12 21:22:54,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:54,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 5197 transitions. [2024-10-12 21:22:54,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 21:22:54,079 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:54,079 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:22:54,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 21:22:54,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 21:22:54,283 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:54,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:54,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1653195779, now seen corresponding path program 1 times [2024-10-12 21:22:54,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:54,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63515993] [2024-10-12 21:22:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:54,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63515993] [2024-10-12 21:22:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63515993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:22:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729437315] [2024-10-12 21:22:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:54,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:22:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:22:54,540 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:22:54,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 21:22:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:54,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-12 21:22:54,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:22:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:54,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:22:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:55,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729437315] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:22:55,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:22:55,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-10-12 21:22:55,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588278422] [2024-10-12 21:22:55,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:22:55,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-12 21:22:55,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:55,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 21:22:55,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-10-12 21:22:55,244 INFO L87 Difference]: Start difference. First operand 3577 states and 5197 transitions. Second operand has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 21 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:55,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:55,676 INFO L93 Difference]: Finished difference Result 8695 states and 12049 transitions. [2024-10-12 21:22:55,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 21:22:55,676 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 21 states have internal predecessors, (127), 0 states have call successors, (0), 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 56 [2024-10-12 21:22:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:55,684 INFO L225 Difference]: With dead ends: 8695 [2024-10-12 21:22:55,685 INFO L226 Difference]: Without dead ends: 5903 [2024-10-12 21:22:55,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2024-10-12 21:22:55,689 INFO L432 NwaCegarLoop]: 1488 mSDtfsCounter, 13432 mSDsluCounter, 4665 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13432 SdHoareTripleChecker+Valid, 6153 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:55,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13432 Valid, 6153 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:22:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2024-10-12 21:22:55,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5431. [2024-10-12 21:22:55,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5431 states, 5429 states have (on average 1.4015472462700314) internal successors, (7609), 5430 states have internal predecessors, (7609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 7609 transitions. [2024-10-12 21:22:55,868 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 7609 transitions. Word has length 56 [2024-10-12 21:22:55,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:55,869 INFO L471 AbstractCegarLoop]: Abstraction has 5431 states and 7609 transitions. [2024-10-12 21:22:55,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 21 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:55,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 7609 transitions. [2024-10-12 21:22:55,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 21:22:55,870 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:55,871 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:22:55,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 21:22:56,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 21:22:56,075 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:56,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:56,076 INFO L85 PathProgramCache]: Analyzing trace with hash 596103761, now seen corresponding path program 1 times [2024-10-12 21:22:56,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:56,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370193770] [2024-10-12 21:22:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:56,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:56,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:56,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370193770] [2024-10-12 21:22:56,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370193770] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:22:56,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618575339] [2024-10-12 21:22:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:56,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:22:56,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:22:56,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:22:56,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 21:22:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:56,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 21:22:56,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:22:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:57,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:22:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:58,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618575339] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:22:58,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:22:58,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2024-10-12 21:22:58,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032473985] [2024-10-12 21:22:58,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:22:58,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-12 21:22:58,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:22:58,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-12 21:22:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-10-12 21:22:58,042 INFO L87 Difference]: Start difference. First operand 5431 states and 7609 transitions. Second operand has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:22:59,010 INFO L93 Difference]: Finished difference Result 8647 states and 11878 transitions. [2024-10-12 21:22:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 21:22:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 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 57 [2024-10-12 21:22:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:22:59,020 INFO L225 Difference]: With dead ends: 8647 [2024-10-12 21:22:59,020 INFO L226 Difference]: Without dead ends: 6581 [2024-10-12 21:22:59,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=457, Invalid=1705, Unknown=0, NotChecked=0, Total=2162 [2024-10-12 21:22:59,024 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 12766 mSDsluCounter, 11950 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12766 SdHoareTripleChecker+Valid, 13441 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:22:59,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12766 Valid, 13441 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 21:22:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2024-10-12 21:22:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 5015. [2024-10-12 21:22:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5015 states, 5013 states have (on average 1.4015559545182525) internal successors, (7026), 5014 states have internal predecessors, (7026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5015 states to 5015 states and 7026 transitions. [2024-10-12 21:22:59,128 INFO L78 Accepts]: Start accepts. Automaton has 5015 states and 7026 transitions. Word has length 57 [2024-10-12 21:22:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:22:59,129 INFO L471 AbstractCegarLoop]: Abstraction has 5015 states and 7026 transitions. [2024-10-12 21:22:59,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:22:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5015 states and 7026 transitions. [2024-10-12 21:22:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 21:22:59,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:22:59,130 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:22:59,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 21:22:59,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:22:59,334 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:22:59,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:22:59,335 INFO L85 PathProgramCache]: Analyzing trace with hash 123873269, now seen corresponding path program 1 times [2024-10-12 21:22:59,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:22:59,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740296661] [2024-10-12 21:22:59,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:59,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:22:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:22:59,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:22:59,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740296661] [2024-10-12 21:22:59,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740296661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:22:59,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543367743] [2024-10-12 21:22:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:22:59,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:22:59,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:22:59,896 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:22:59,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 21:22:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:22:59,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-12 21:22:59,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:23:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:01,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:23:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:03,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543367743] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:23:03,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:23:03,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 16] total 38 [2024-10-12 21:23:03,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056010997] [2024-10-12 21:23:03,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:23:03,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-12 21:23:03,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:03,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-12 21:23:03,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 21:23:03,131 INFO L87 Difference]: Start difference. First operand 5015 states and 7026 transitions. Second operand has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:14,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:14,073 INFO L93 Difference]: Finished difference Result 8635 states and 11770 transitions. [2024-10-12 21:23:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-10-12 21:23:14,074 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-12 21:23:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:14,080 INFO L225 Difference]: With dead ends: 8635 [2024-10-12 21:23:14,080 INFO L226 Difference]: Without dead ends: 5513 [2024-10-12 21:23:14,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=2745, Invalid=10365, Unknown=0, NotChecked=0, Total=13110 [2024-10-12 21:23:14,085 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 24827 mSDsluCounter, 18452 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24827 SdHoareTripleChecker+Valid, 19969 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:14,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24827 Valid, 19969 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1754 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 21:23:14,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5513 states. [2024-10-12 21:23:14,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5513 to 4695. [2024-10-12 21:23:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4693 states have (on average 1.4069891327509056) internal successors, (6603), 4694 states have internal predecessors, (6603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 6603 transitions. [2024-10-12 21:23:14,182 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 6603 transitions. Word has length 57 [2024-10-12 21:23:14,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:14,182 INFO L471 AbstractCegarLoop]: Abstraction has 4695 states and 6603 transitions. [2024-10-12 21:23:14,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:14,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 6603 transitions. [2024-10-12 21:23:14,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:23:14,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:14,183 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:14,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 21:23:14,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:23:14,388 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:14,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:14,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1965747253, now seen corresponding path program 1 times [2024-10-12 21:23:14,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:14,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94857758] [2024-10-12 21:23:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:14,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:23:14,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:14,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94857758] [2024-10-12 21:23:14,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94857758] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:23:14,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269818968] [2024-10-12 21:23:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:14,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:23:14,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:23:14,477 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:23:14,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 21:23:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:14,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 21:23:14,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:23:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:23:14,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:23:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:23:14,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269818968] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:23:14,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:23:14,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-10-12 21:23:14,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850538173] [2024-10-12 21:23:14,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:23:14,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:23:14,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:14,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:23:14,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:23:14,744 INFO L87 Difference]: Start difference. First operand 4695 states and 6603 transitions. Second operand has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:14,946 INFO L93 Difference]: Finished difference Result 10722 states and 14304 transitions. [2024-10-12 21:23:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 21:23:14,947 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 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 58 [2024-10-12 21:23:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:14,955 INFO L225 Difference]: With dead ends: 10722 [2024-10-12 21:23:14,955 INFO L226 Difference]: Without dead ends: 6812 [2024-10-12 21:23:14,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:23:14,959 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 5810 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5810 SdHoareTripleChecker+Valid, 4647 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:14,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5810 Valid, 4647 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:23:14,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6812 states. [2024-10-12 21:23:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6812 to 6457. [2024-10-12 21:23:15,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6457 states, 6455 states have (on average 1.324864446165763) internal successors, (8552), 6456 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6457 states to 6457 states and 8552 transitions. [2024-10-12 21:23:15,211 INFO L78 Accepts]: Start accepts. Automaton has 6457 states and 8552 transitions. Word has length 58 [2024-10-12 21:23:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:15,211 INFO L471 AbstractCegarLoop]: Abstraction has 6457 states and 8552 transitions. [2024-10-12 21:23:15,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6457 states and 8552 transitions. [2024-10-12 21:23:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-12 21:23:15,212 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:15,212 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:15,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 21:23:15,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:23:15,417 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:15,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:15,418 INFO L85 PathProgramCache]: Analyzing trace with hash 417343539, now seen corresponding path program 1 times [2024-10-12 21:23:15,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:15,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468211934] [2024-10-12 21:23:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:15,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:15,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:15,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468211934] [2024-10-12 21:23:15,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468211934] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:23:15,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:23:15,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:23:15,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784449932] [2024-10-12 21:23:15,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:23:15,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:23:15,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:15,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:23:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:23:15,531 INFO L87 Difference]: Start difference. First operand 6457 states and 8552 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:20,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:20,700 INFO L93 Difference]: Finished difference Result 8712 states and 12861 transitions. [2024-10-12 21:23:20,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:23:20,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-10-12 21:23:20,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:20,711 INFO L225 Difference]: With dead ends: 8712 [2024-10-12 21:23:20,711 INFO L226 Difference]: Without dead ends: 7959 [2024-10-12 21:23:20,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:23:20,714 INFO L432 NwaCegarLoop]: 738 mSDtfsCounter, 2312 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2312 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:20,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2312 Valid, 756 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-10-12 21:23:20,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7959 states. [2024-10-12 21:23:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7959 to 7959. [2024-10-12 21:23:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7959 states, 7957 states have (on average 1.340454945331155) internal successors, (10666), 7958 states have internal predecessors, (10666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 10666 transitions. [2024-10-12 21:23:20,899 INFO L78 Accepts]: Start accepts. Automaton has 7959 states and 10666 transitions. Word has length 66 [2024-10-12 21:23:20,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:20,899 INFO L471 AbstractCegarLoop]: Abstraction has 7959 states and 10666 transitions. [2024-10-12 21:23:20,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 7959 states and 10666 transitions. [2024-10-12 21:23:20,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-12 21:23:20,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:20,901 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:20,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 21:23:20,901 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:20,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:20,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2037476169, now seen corresponding path program 1 times [2024-10-12 21:23:20,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:20,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721594358] [2024-10-12 21:23:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:20,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:21,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:21,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721594358] [2024-10-12 21:23:21,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721594358] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:23:21,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281558654] [2024-10-12 21:23:21,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:21,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:23:21,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:23:21,469 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:23:21,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 21:23:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:21,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 21:23:21,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:23:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:22,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:23:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:23,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281558654] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:23:23,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:23:23,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2024-10-12 21:23:23,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446048661] [2024-10-12 21:23:23,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:23:23,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-12 21:23:23,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:23,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-12 21:23:23,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2024-10-12 21:23:23,425 INFO L87 Difference]: Start difference. First operand 7959 states and 10666 transitions. Second operand has 34 states, 34 states have (on average 7.382352941176471) internal successors, (251), 33 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:23:26,026 INFO L93 Difference]: Finished difference Result 12143 states and 15931 transitions. [2024-10-12 21:23:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-12 21:23:26,027 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.382352941176471) internal successors, (251), 33 states have internal predecessors, (251), 0 states have call successors, (0), 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 93 [2024-10-12 21:23:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:23:26,038 INFO L225 Difference]: With dead ends: 12143 [2024-10-12 21:23:26,038 INFO L226 Difference]: Without dead ends: 8039 [2024-10-12 21:23:26,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1244, Invalid=4918, Unknown=0, NotChecked=0, Total=6162 [2024-10-12 21:23:26,044 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 21323 mSDsluCounter, 13678 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21323 SdHoareTripleChecker+Valid, 15169 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:23:26,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21323 Valid, 15169 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:23:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8039 states. [2024-10-12 21:23:26,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8039 to 4929. [2024-10-12 21:23:26,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4927 states have (on average 1.3821798254515933) internal successors, (6810), 4928 states have internal predecessors, (6810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 6810 transitions. [2024-10-12 21:23:26,176 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 6810 transitions. Word has length 93 [2024-10-12 21:23:26,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:23:26,176 INFO L471 AbstractCegarLoop]: Abstraction has 4929 states and 6810 transitions. [2024-10-12 21:23:26,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.382352941176471) internal successors, (251), 33 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:23:26,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 6810 transitions. [2024-10-12 21:23:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-12 21:23:26,178 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:23:26,178 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:23:26,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 21:23:26,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:23:26,379 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:23:26,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:23:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash 626423191, now seen corresponding path program 1 times [2024-10-12 21:23:26,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:23:26,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055344720] [2024-10-12 21:23:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:26,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:23:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:27,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:23:27,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055344720] [2024-10-12 21:23:27,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055344720] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:23:27,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744903512] [2024-10-12 21:23:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:23:27,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:23:27,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:23:27,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:23:27,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 21:23:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:23:27,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-12 21:23:27,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:23:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:29,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:23:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:23:34,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744903512] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:23:34,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:23:34,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 60 [2024-10-12 21:23:34,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147703342] [2024-10-12 21:23:34,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:23:34,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-10-12 21:23:34,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:23:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-10-12 21:23:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=3272, Unknown=0, NotChecked=0, Total=3540 [2024-10-12 21:23:34,273 INFO L87 Difference]: Start difference. First operand 4929 states and 6810 transitions. Second operand has 60 states, 60 states have (on average 4.283333333333333) internal successors, (257), 60 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)