./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_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 1b3a5c95c10076386b15606d0ac6559403dceee57f74bca8a711eb692be2f98e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 23:41:52,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 23:41:53,039 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 23:41:53,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 23:41:53,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 23:41:53,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 23:41:53,093 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 23:41:53,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 23:41:53,094 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 23:41:53,094 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 23:41:53,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 23:41:53,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 23:41:53,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 23:41:53,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 23:41:53,095 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 23:41:53,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 23:41:53,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 23:41:53,096 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 23:41:53,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 23:41:53,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 23:41:53,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 23:41:53,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 23:41:53,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 23:41:53,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 23:41:53,104 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 23:41:53,104 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 23:41:53,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 23:41:53,104 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 23:41:53,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 23:41:53,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 23:41:53,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 23:41:53,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 23:41:53,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:41:53,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 23:41:53,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 23:41:53,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 23:41:53,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 23:41:53,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 23:41:53,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 23:41:53,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 23:41:53,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 23:41:53,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 23:41:53,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b3a5c95c10076386b15606d0ac6559403dceee57f74bca8a711eb692be2f98e [2024-10-13 23:41:53,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 23:41:53,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 23:41:53,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 23:41:53,535 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 23:41:53,535 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 23:41:53,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label09.c [2024-10-13 23:41:55,206 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 23:41:55,402 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 23:41:55,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label09.c [2024-10-13 23:41:55,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d775365/ee4b6f7dc0e44f95961f511e294b50b2/FLAGfed7a701f [2024-10-13 23:41:55,451 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d775365/ee4b6f7dc0e44f95961f511e294b50b2 [2024-10-13 23:41:55,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 23:41:55,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 23:41:55,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 23:41:55,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 23:41:55,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 23:41:55,464 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:41:55" (1/1) ... [2024-10-13 23:41:55,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d3d715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:55, skipping insertion in model container [2024-10-13 23:41:55,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:41:55" (1/1) ... [2024-10-13 23:41:55,509 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 23:41:55,668 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label09.c[4722,4735] [2024-10-13 23:41:55,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:41:55,842 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 23:41:55,903 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label09.c[4722,4735] [2024-10-13 23:41:55,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:41:56,004 INFO L204 MainTranslator]: Completed translation [2024-10-13 23:41:56,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56 WrapperNode [2024-10-13 23:41:56,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 23:41:56,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 23:41:56,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 23:41:56,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 23:41:56,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,101 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 859 [2024-10-13 23:41:56,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 23:41:56,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 23:41:56,103 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 23:41:56,103 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 23:41:56,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,162 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]. [2024-10-13 23:41:56,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,223 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 23:41:56,224 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 23:41:56,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 23:41:56,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 23:41:56,225 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (1/1) ... [2024-10-13 23:41:56,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:41:56,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:41:56,251 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) [2024-10-13 23:41:56,253 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 [2024-10-13 23:41:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 23:41:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 23:41:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 23:41:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 23:41:56,348 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 23:41:56,351 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 23:41:57,238 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-10-13 23:41:57,238 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 23:41:57,285 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 23:41:57,287 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 23:41:57,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:41:57 BoogieIcfgContainer [2024-10-13 23:41:57,287 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 23:41:57,289 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 23:41:57,289 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 23:41:57,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 23:41:57,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:41:55" (1/3) ... [2024-10-13 23:41:57,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664752ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:41:57, skipping insertion in model container [2024-10-13 23:41:57,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:41:56" (2/3) ... [2024-10-13 23:41:57,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664752ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:41:57, skipping insertion in model container [2024-10-13 23:41:57,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:41:57" (3/3) ... [2024-10-13 23:41:57,295 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label09.c [2024-10-13 23:41:57,311 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 23:41:57,312 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 23:41:57,365 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 23:41:57,370 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;@245c114b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 23:41:57,371 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 23:41:57,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:41:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-13 23:41:57,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:41:57,381 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] [2024-10-13 23:41:57,381 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:41:57,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:41:57,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1349716483, now seen corresponding path program 1 times [2024-10-13 23:41:57,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:41:57,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224246990] [2024-10-13 23:41:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:41:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:41:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:41:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:41:57,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:41:57,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224246990] [2024-10-13 23:41:57,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224246990] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:41:57,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:41:57,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:41:57,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328083264] [2024-10-13 23:41:57,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:41:57,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 23:41:57,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:41:57,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 23:41:57,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:41:57,549 INFO L87 Difference]: Start difference. First operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:41:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:41:57,576 INFO L93 Difference]: Finished difference Result 365 states and 719 transitions. [2024-10-13 23:41:57,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 23:41:57,578 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-10-13 23:41:57,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:41:57,585 INFO L225 Difference]: With dead ends: 365 [2024-10-13 23:41:57,585 INFO L226 Difference]: Without dead ends: 181 [2024-10-13 23:41:57,588 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 [2024-10-13 23:41:57,590 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:41:57,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 23:41:57,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-10-13 23:41:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-10-13 23:41:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6388888888888888) internal successors, (295), 180 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:41:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 295 transitions. [2024-10-13 23:41:57,623 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 295 transitions. Word has length 44 [2024-10-13 23:41:57,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:41:57,623 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 295 transitions. [2024-10-13 23:41:57,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:41:57,624 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 295 transitions. [2024-10-13 23:41:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-13 23:41:57,624 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:41:57,625 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] [2024-10-13 23:41:57,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 23:41:57,625 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:41:57,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:41:57,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1440141172, now seen corresponding path program 1 times [2024-10-13 23:41:57,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:41:57,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977509556] [2024-10-13 23:41:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:41:57,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:41:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:41:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:41:57,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:41:57,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977509556] [2024-10-13 23:41:57,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977509556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:41:57,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:41:57,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:41:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286142439] [2024-10-13 23:41:57,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:41:57,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:41:57,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:41:57,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:41:57,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:41:57,820 INFO L87 Difference]: Start difference. First operand 181 states and 295 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:41:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:41:58,952 INFO L93 Difference]: Finished difference Result 717 states and 1175 transitions. [2024-10-13 23:41:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:41:58,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-10-13 23:41:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:41:58,959 INFO L225 Difference]: With dead ends: 717 [2024-10-13 23:41:58,959 INFO L226 Difference]: Without dead ends: 537 [2024-10-13 23:41:58,960 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 [2024-10-13 23:41:58,961 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 489 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:41:58,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 120 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 23:41:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-10-13 23:41:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2024-10-13 23:41:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.4496268656716418) internal successors, (777), 536 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:41:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 777 transitions. [2024-10-13 23:41:58,992 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 777 transitions. Word has length 44 [2024-10-13 23:41:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:41:58,992 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 777 transitions. [2024-10-13 23:41:58,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:41:58,992 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 777 transitions. [2024-10-13 23:41:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-13 23:41:58,995 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:41:58,995 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:41:58,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 23:41:58,996 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:41:58,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:41:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1603867943, now seen corresponding path program 1 times [2024-10-13 23:41:58,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:41:58,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469317273] [2024-10-13 23:41:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:41:58,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:41:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:41:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:41:59,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:41:59,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469317273] [2024-10-13 23:41:59,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469317273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:41:59,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:41:59,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:41:59,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338257003] [2024-10-13 23:41:59,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:41:59,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:41:59,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:41:59,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:41:59,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:41:59,213 INFO L87 Difference]: Start difference. First operand 537 states and 777 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 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) [2024-10-13 23:41:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:41:59,826 INFO L93 Difference]: Finished difference Result 1280 states and 1977 transitions. [2024-10-13 23:41:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:41:59,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 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 124 [2024-10-13 23:41:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:41:59,830 INFO L225 Difference]: With dead ends: 1280 [2024-10-13 23:41:59,830 INFO L226 Difference]: Without dead ends: 893 [2024-10-13 23:41:59,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:41:59,832 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 116 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:41:59,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 116 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:41:59,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2024-10-13 23:41:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 715. [2024-10-13 23:41:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 1.2212885154061626) internal successors, (872), 714 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:41:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 872 transitions. [2024-10-13 23:41:59,858 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 872 transitions. Word has length 124 [2024-10-13 23:41:59,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:41:59,858 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 872 transitions. [2024-10-13 23:41:59,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 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) [2024-10-13 23:41:59,858 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 872 transitions. [2024-10-13 23:41:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-13 23:41:59,866 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:41:59,866 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:41:59,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 23:41:59,866 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:41:59,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:41:59,870 INFO L85 PathProgramCache]: Analyzing trace with hash -55448227, now seen corresponding path program 1 times [2024-10-13 23:41:59,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:41:59,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527969638] [2024-10-13 23:41:59,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:41:59,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:41:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:42:00,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527969638] [2024-10-13 23:42:00,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527969638] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:00,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077761343] [2024-10-13 23:42:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:00,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:00,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:00,288 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) [2024-10-13 23:42:00,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 23:42:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:00,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:42:00,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-13 23:42:00,655 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:42:00,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077761343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:00,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:42:00,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-13 23:42:00,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266510582] [2024-10-13 23:42:00,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:00,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:00,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:00,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:00,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:00,659 INFO L87 Difference]: Start difference. First operand 715 states and 872 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:01,240 INFO L93 Difference]: Finished difference Result 1607 states and 2070 transitions. [2024-10-13 23:42:01,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:01,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-10-13 23:42:01,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:01,245 INFO L225 Difference]: With dead ends: 1607 [2024-10-13 23:42:01,246 INFO L226 Difference]: Without dead ends: 1071 [2024-10-13 23:42:01,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:01,248 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 84 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:01,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 45 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:42:01,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-10-13 23:42:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2024-10-13 23:42:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.2158878504672896) internal successors, (1301), 1070 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1301 transitions. [2024-10-13 23:42:01,282 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1301 transitions. Word has length 215 [2024-10-13 23:42:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:01,283 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1301 transitions. [2024-10-13 23:42:01,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:01,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1301 transitions. [2024-10-13 23:42:01,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-10-13 23:42:01,289 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:01,290 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:01,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 23:42:01,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:01,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:01,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:01,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1623294726, now seen corresponding path program 1 times [2024-10-13 23:42:01,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:01,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943945071] [2024-10-13 23:42:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:01,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:42:01,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:01,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943945071] [2024-10-13 23:42:01,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943945071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:01,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:01,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:42:01,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181892133] [2024-10-13 23:42:01,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:01,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:01,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:42:01,711 INFO L87 Difference]: Start difference. First operand 1071 states and 1301 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:02,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:02,230 INFO L93 Difference]: Finished difference Result 2497 states and 3069 transitions. [2024-10-13 23:42:02,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:02,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-10-13 23:42:02,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:02,237 INFO L225 Difference]: With dead ends: 2497 [2024-10-13 23:42:02,237 INFO L226 Difference]: Without dead ends: 1605 [2024-10-13 23:42:02,239 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 [2024-10-13 23:42:02,240 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 110 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:02,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 75 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 23:42:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2024-10-13 23:42:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1605. [2024-10-13 23:42:02,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.1689526184538654) internal successors, (1875), 1604 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1875 transitions. [2024-10-13 23:42:02,263 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1875 transitions. Word has length 218 [2024-10-13 23:42:02,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:02,264 INFO L471 AbstractCegarLoop]: Abstraction has 1605 states and 1875 transitions. [2024-10-13 23:42:02,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:02,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1875 transitions. [2024-10-13 23:42:02,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-10-13 23:42:02,281 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:02,281 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:02,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 23:42:02,281 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:02,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:02,283 INFO L85 PathProgramCache]: Analyzing trace with hash -245733428, now seen corresponding path program 1 times [2024-10-13 23:42:02,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:02,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409041803] [2024-10-13 23:42:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:02,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2024-10-13 23:42:02,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:02,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409041803] [2024-10-13 23:42:02,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409041803] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:02,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:02,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:42:02,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616037497] [2024-10-13 23:42:02,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:02,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:42:02,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:02,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:42:02,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:42:02,534 INFO L87 Difference]: Start difference. First operand 1605 states and 1875 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:03,052 INFO L93 Difference]: Finished difference Result 3060 states and 3635 transitions. [2024-10-13 23:42:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:42:03,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 335 [2024-10-13 23:42:03,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:03,056 INFO L225 Difference]: With dead ends: 3060 [2024-10-13 23:42:03,056 INFO L226 Difference]: Without dead ends: 1783 [2024-10-13 23:42:03,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:42:03,058 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 124 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:03,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 14 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 23:42:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-10-13 23:42:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1605. [2024-10-13 23:42:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.119700748129676) internal successors, (1796), 1604 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1796 transitions. [2024-10-13 23:42:03,078 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1796 transitions. Word has length 335 [2024-10-13 23:42:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:03,078 INFO L471 AbstractCegarLoop]: Abstraction has 1605 states and 1796 transitions. [2024-10-13 23:42:03,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1796 transitions. [2024-10-13 23:42:03,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-10-13 23:42:03,082 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:03,082 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:03,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 23:42:03,082 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:03,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash -158798872, now seen corresponding path program 1 times [2024-10-13 23:42:03,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:03,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95001878] [2024-10-13 23:42:03,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:03,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-10-13 23:42:03,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:03,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95001878] [2024-10-13 23:42:03,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95001878] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:03,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574078245] [2024-10-13 23:42:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:03,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:03,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:03,430 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) [2024-10-13 23:42:03,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 23:42:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:03,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:42:03,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-10-13 23:42:03,916 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:42:03,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574078245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:03,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:42:03,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-13 23:42:03,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750225197] [2024-10-13 23:42:03,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:03,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:03,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:03,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:03,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:42:03,918 INFO L87 Difference]: Start difference. First operand 1605 states and 1796 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:04,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:04,296 INFO L93 Difference]: Finished difference Result 2319 states and 2565 transitions. [2024-10-13 23:42:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:04,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 424 [2024-10-13 23:42:04,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:04,302 INFO L225 Difference]: With dead ends: 2319 [2024-10-13 23:42:04,302 INFO L226 Difference]: Without dead ends: 2317 [2024-10-13 23:42:04,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:42:04,303 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:04,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 9 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 23:42:04,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2024-10-13 23:42:04,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 1427. [2024-10-13 23:42:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1426 states have (on average 1.0939691444600281) internal successors, (1560), 1426 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1560 transitions. [2024-10-13 23:42:04,322 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1560 transitions. Word has length 424 [2024-10-13 23:42:04,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:04,323 INFO L471 AbstractCegarLoop]: Abstraction has 1427 states and 1560 transitions. [2024-10-13 23:42:04,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:04,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1560 transitions. [2024-10-13 23:42:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-10-13 23:42:04,326 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:04,326 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 23:42:04,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 23:42:04,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-13 23:42:04,528 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:04,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:04,528 INFO L85 PathProgramCache]: Analyzing trace with hash -655167302, now seen corresponding path program 1 times [2024-10-13 23:42:04,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:04,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567983973] [2024-10-13 23:42:04,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:04,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-13 23:42:04,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:04,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567983973] [2024-10-13 23:42:04,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567983973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:04,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:04,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:42:04,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299472626] [2024-10-13 23:42:04,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:04,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:04,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:04,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:04,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:42:04,802 INFO L87 Difference]: Start difference. First operand 1427 states and 1560 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:05,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:05,208 INFO L93 Difference]: Finished difference Result 3209 states and 3558 transitions. [2024-10-13 23:42:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:05,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 430 [2024-10-13 23:42:05,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:05,212 INFO L225 Difference]: With dead ends: 3209 [2024-10-13 23:42:05,212 INFO L226 Difference]: Without dead ends: 1961 [2024-10-13 23:42:05,213 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 [2024-10-13 23:42:05,214 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 110 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:05,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 242 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 23:42:05,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2024-10-13 23:42:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1605. [2024-10-13 23:42:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.0841645885286784) internal successors, (1739), 1604 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:05,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1739 transitions. [2024-10-13 23:42:05,231 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1739 transitions. Word has length 430 [2024-10-13 23:42:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:05,231 INFO L471 AbstractCegarLoop]: Abstraction has 1605 states and 1739 transitions. [2024-10-13 23:42:05,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1739 transitions. [2024-10-13 23:42:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-10-13 23:42:05,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:05,237 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:05,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 23:42:05,237 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:05,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:05,237 INFO L85 PathProgramCache]: Analyzing trace with hash -133056309, now seen corresponding path program 1 times [2024-10-13 23:42:05,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:05,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483178372] [2024-10-13 23:42:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:05,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-13 23:42:05,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483178372] [2024-10-13 23:42:05,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483178372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:05,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:05,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:42:05,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790575258] [2024-10-13 23:42:05,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:05,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:05,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:05,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:05,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:42:05,544 INFO L87 Difference]: Start difference. First operand 1605 states and 1739 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:05,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:05,960 INFO L93 Difference]: Finished difference Result 3743 states and 4120 transitions. [2024-10-13 23:42:05,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:05,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 437 [2024-10-13 23:42:05,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:05,965 INFO L225 Difference]: With dead ends: 3743 [2024-10-13 23:42:05,966 INFO L226 Difference]: Without dead ends: 2317 [2024-10-13 23:42:05,967 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 [2024-10-13 23:42:05,968 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 113 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:05,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 199 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 23:42:05,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2024-10-13 23:42:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2317. [2024-10-13 23:42:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 2316 states have (on average 1.0885146804835923) internal successors, (2521), 2316 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2521 transitions. [2024-10-13 23:42:05,994 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2521 transitions. Word has length 437 [2024-10-13 23:42:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:05,995 INFO L471 AbstractCegarLoop]: Abstraction has 2317 states and 2521 transitions. [2024-10-13 23:42:05,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2521 transitions. [2024-10-13 23:42:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-10-13 23:42:05,997 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:05,997 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:05,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 23:42:05,997 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:05,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:05,998 INFO L85 PathProgramCache]: Analyzing trace with hash -214246886, now seen corresponding path program 1 times [2024-10-13 23:42:05,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:05,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195461535] [2024-10-13 23:42:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:05,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 491 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-13 23:42:06,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:06,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195461535] [2024-10-13 23:42:06,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195461535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:06,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:06,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:42:06,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121009934] [2024-10-13 23:42:06,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:06,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:06,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:06,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:42:06,255 INFO L87 Difference]: Start difference. First operand 2317 states and 2521 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:06,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:06,658 INFO L93 Difference]: Finished difference Result 5701 states and 6286 transitions. [2024-10-13 23:42:06,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:06,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 478 [2024-10-13 23:42:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:06,666 INFO L225 Difference]: With dead ends: 5701 [2024-10-13 23:42:06,666 INFO L226 Difference]: Without dead ends: 3563 [2024-10-13 23:42:06,668 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 [2024-10-13 23:42:06,668 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:06,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 50 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 23:42:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2024-10-13 23:42:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3207. [2024-10-13 23:42:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 3206 states have (on average 1.0820336868371803) internal successors, (3469), 3206 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 3469 transitions. [2024-10-13 23:42:06,700 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 3469 transitions. Word has length 478 [2024-10-13 23:42:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:06,701 INFO L471 AbstractCegarLoop]: Abstraction has 3207 states and 3469 transitions. [2024-10-13 23:42:06,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 3469 transitions. [2024-10-13 23:42:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2024-10-13 23:42:06,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:06,704 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:06,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 23:42:06,704 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:06,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:06,705 INFO L85 PathProgramCache]: Analyzing trace with hash -510870478, now seen corresponding path program 1 times [2024-10-13 23:42:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:06,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868508059] [2024-10-13 23:42:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 1084 proven. 104 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-10-13 23:42:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868508059] [2024-10-13 23:42:07,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868508059] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:07,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010052315] [2024-10-13 23:42:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:07,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:07,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:07,532 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) [2024-10-13 23:42:07,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 23:42:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:07,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:42:07,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2024-10-13 23:42:07,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:42:07,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010052315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:07,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:42:07,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 23:42:07,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481341730] [2024-10-13 23:42:07,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:07,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:07,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:07,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:07,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:42:07,786 INFO L87 Difference]: Start difference. First operand 3207 states and 3469 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:08,150 INFO L93 Difference]: Finished difference Result 4099 states and 4428 transitions. [2024-10-13 23:42:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:08,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 623 [2024-10-13 23:42:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:08,158 INFO L225 Difference]: With dead ends: 4099 [2024-10-13 23:42:08,158 INFO L226 Difference]: Without dead ends: 4097 [2024-10-13 23:42:08,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:42:08,159 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 156 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:08,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 9 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 23:42:08,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2024-10-13 23:42:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 3207. [2024-10-13 23:42:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 3206 states have (on average 1.0820336868371803) internal successors, (3469), 3206 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 3469 transitions. [2024-10-13 23:42:08,209 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 3469 transitions. Word has length 623 [2024-10-13 23:42:08,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:08,209 INFO L471 AbstractCegarLoop]: Abstraction has 3207 states and 3469 transitions. [2024-10-13 23:42:08,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 3469 transitions. [2024-10-13 23:42:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2024-10-13 23:42:08,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:08,213 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:08,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 23:42:08,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:08,414 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:08,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:08,415 INFO L85 PathProgramCache]: Analyzing trace with hash 389974528, now seen corresponding path program 1 times [2024-10-13 23:42:08,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:08,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861009487] [2024-10-13 23:42:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:08,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 857 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-13 23:42:08,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:08,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861009487] [2024-10-13 23:42:08,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861009487] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:08,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491045254] [2024-10-13 23:42:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:08,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:08,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:08,772 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) [2024-10-13 23:42:08,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 23:42:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:08,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:42:08,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 857 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-13 23:42:09,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:42:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 857 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-13 23:42:09,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491045254] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 23:42:09,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 23:42:09,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-10-13 23:42:09,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793245809] [2024-10-13 23:42:09,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 23:42:09,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 23:42:09,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 23:42:09,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:09,625 INFO L87 Difference]: Start difference. First operand 3207 states and 3469 transitions. Second operand has 6 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:10,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:10,464 INFO L93 Difference]: Finished difference Result 7481 states and 8149 transitions. [2024-10-13 23:42:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 23:42:10,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 0 states have call successors, (0), 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 633 [2024-10-13 23:42:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:10,473 INFO L225 Difference]: With dead ends: 7481 [2024-10-13 23:42:10,473 INFO L226 Difference]: Without dead ends: 4453 [2024-10-13 23:42:10,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1268 GetRequests, 1264 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:10,475 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 169 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:10,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 60 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:42:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4453 states. [2024-10-13 23:42:10,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4453 to 3919. [2024-10-13 23:42:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3918 states have (on average 1.0811638591117918) internal successors, (4236), 3918 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 4236 transitions. [2024-10-13 23:42:10,512 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 4236 transitions. Word has length 633 [2024-10-13 23:42:10,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:10,512 INFO L471 AbstractCegarLoop]: Abstraction has 3919 states and 4236 transitions. [2024-10-13 23:42:10,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:10,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 4236 transitions. [2024-10-13 23:42:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2024-10-13 23:42:10,516 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:10,516 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:10,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 23:42:10,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:10,717 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:10,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2004660329, now seen corresponding path program 1 times [2024-10-13 23:42:10,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:10,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615194576] [2024-10-13 23:42:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:10,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 1111 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-10-13 23:42:11,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:11,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615194576] [2024-10-13 23:42:11,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615194576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:11,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:11,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:42:11,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523582674] [2024-10-13 23:42:11,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:11,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:11,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:11,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:11,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:42:11,128 INFO L87 Difference]: Start difference. First operand 3919 states and 4236 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:11,508 INFO L93 Difference]: Finished difference Result 7837 states and 8486 transitions. [2024-10-13 23:42:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 643 [2024-10-13 23:42:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:11,516 INFO L225 Difference]: With dead ends: 7837 [2024-10-13 23:42:11,516 INFO L226 Difference]: Without dead ends: 4097 [2024-10-13 23:42:11,518 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 [2024-10-13 23:42:11,518 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 50 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:11,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 240 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 23:42:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2024-10-13 23:42:11,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 3741. [2024-10-13 23:42:11,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 3740 states have (on average 1.0783422459893048) internal successors, (4033), 3740 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 4033 transitions. [2024-10-13 23:42:11,550 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 4033 transitions. Word has length 643 [2024-10-13 23:42:11,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:11,551 INFO L471 AbstractCegarLoop]: Abstraction has 3741 states and 4033 transitions. [2024-10-13 23:42:11,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 4033 transitions. [2024-10-13 23:42:11,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2024-10-13 23:42:11,554 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:11,554 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:11,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 23:42:11,555 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:11,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash 772881503, now seen corresponding path program 1 times [2024-10-13 23:42:11,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578509947] [2024-10-13 23:42:11,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:11,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2024-10-13 23:42:11,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:11,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578509947] [2024-10-13 23:42:11,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578509947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:11,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:11,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:42:11,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658762725] [2024-10-13 23:42:11,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:11,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:11,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:11,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:11,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:42:11,804 INFO L87 Difference]: Start difference. First operand 3741 states and 4033 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:12,170 INFO L93 Difference]: Finished difference Result 8905 states and 9667 transitions. [2024-10-13 23:42:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:12,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 705 [2024-10-13 23:42:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:12,177 INFO L225 Difference]: With dead ends: 8905 [2024-10-13 23:42:12,178 INFO L226 Difference]: Without dead ends: 5343 [2024-10-13 23:42:12,180 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 [2024-10-13 23:42:12,180 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 109 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:12,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 35 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 23:42:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2024-10-13 23:42:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 5165. [2024-10-13 23:42:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 1.0780402788536019) internal successors, (5567), 5164 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 5567 transitions. [2024-10-13 23:42:12,218 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 5567 transitions. Word has length 705 [2024-10-13 23:42:12,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:12,218 INFO L471 AbstractCegarLoop]: Abstraction has 5165 states and 5567 transitions. [2024-10-13 23:42:12,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 5567 transitions. [2024-10-13 23:42:12,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2024-10-13 23:42:12,222 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:12,222 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:12,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 23:42:12,222 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:12,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash 192544172, now seen corresponding path program 1 times [2024-10-13 23:42:12,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:12,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253653955] [2024-10-13 23:42:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:12,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1118 proven. 93 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2024-10-13 23:42:12,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:12,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253653955] [2024-10-13 23:42:12,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253653955] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192081581] [2024-10-13 23:42:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:12,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:12,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:12,760 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) [2024-10-13 23:42:12,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 23:42:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:12,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:42:12,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1211 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2024-10-13 23:42:13,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:42:13,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192081581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:13,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:42:13,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-13 23:42:13,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013805504] [2024-10-13 23:42:13,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:13,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:13,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:13,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:13,303 INFO L87 Difference]: Start difference. First operand 5165 states and 5567 transitions. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:13,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:13,666 INFO L93 Difference]: Finished difference Result 10507 states and 11328 transitions. [2024-10-13 23:42:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:13,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 723 [2024-10-13 23:42:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:13,672 INFO L225 Difference]: With dead ends: 10507 [2024-10-13 23:42:13,672 INFO L226 Difference]: Without dead ends: 5521 [2024-10-13 23:42:13,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:13,675 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:13,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 63 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 23:42:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5521 states. [2024-10-13 23:42:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5521 to 5343. [2024-10-13 23:42:13,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5343 states, 5342 states have (on average 1.0776862598277799) internal successors, (5757), 5342 states have internal predecessors, (5757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 5757 transitions. [2024-10-13 23:42:13,710 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 5757 transitions. Word has length 723 [2024-10-13 23:42:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:13,711 INFO L471 AbstractCegarLoop]: Abstraction has 5343 states and 5757 transitions. [2024-10-13 23:42:13,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 5757 transitions. [2024-10-13 23:42:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2024-10-13 23:42:13,714 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:13,715 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:13,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 23:42:13,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 23:42:13,916 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:13,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:13,916 INFO L85 PathProgramCache]: Analyzing trace with hash 527150511, now seen corresponding path program 1 times [2024-10-13 23:42:13,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:13,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677370542] [2024-10-13 23:42:13,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:13,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1716 backedges. 1036 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2024-10-13 23:42:14,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:14,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677370542] [2024-10-13 23:42:14,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677370542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:14,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:14,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:42:14,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460875938] [2024-10-13 23:42:14,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:14,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:14,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:14,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:14,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:42:14,410 INFO L87 Difference]: Start difference. First operand 5343 states and 5757 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:14,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:14,755 INFO L93 Difference]: Finished difference Result 10863 states and 11730 transitions. [2024-10-13 23:42:14,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:14,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 750 [2024-10-13 23:42:14,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:14,771 INFO L225 Difference]: With dead ends: 10863 [2024-10-13 23:42:14,773 INFO L226 Difference]: Without dead ends: 5699 [2024-10-13 23:42:14,776 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 [2024-10-13 23:42:14,777 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:14,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 224 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 23:42:14,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2024-10-13 23:42:14,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 5699. [2024-10-13 23:42:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 5698 states have (on average 1.07002457002457) internal successors, (6097), 5698 states have internal predecessors, (6097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 6097 transitions. [2024-10-13 23:42:14,862 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 6097 transitions. Word has length 750 [2024-10-13 23:42:14,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:14,865 INFO L471 AbstractCegarLoop]: Abstraction has 5699 states and 6097 transitions. [2024-10-13 23:42:14,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:14,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 6097 transitions. [2024-10-13 23:42:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2024-10-13 23:42:14,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:14,877 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:14,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 23:42:14,877 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:14,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:14,878 INFO L85 PathProgramCache]: Analyzing trace with hash 578775625, now seen corresponding path program 1 times [2024-10-13 23:42:14,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:14,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651709830] [2024-10-13 23:42:14,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:14,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 1166 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2024-10-13 23:42:15,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:15,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651709830] [2024-10-13 23:42:15,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651709830] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:15,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882761762] [2024-10-13 23:42:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:15,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:15,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:15,885 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) [2024-10-13 23:42:15,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 23:42:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:16,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 23:42:16,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 1302 proven. 489 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2024-10-13 23:42:16,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:42:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 1238 proven. 0 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2024-10-13 23:42:17,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882761762] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:17,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 23:42:17,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 10 [2024-10-13 23:42:17,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668645688] [2024-10-13 23:42:17,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:17,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 23:42:17,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:17,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 23:42:17,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-10-13 23:42:17,434 INFO L87 Difference]: Start difference. First operand 5699 states and 6097 transitions. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:17,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:17,892 INFO L93 Difference]: Finished difference Result 11575 states and 12416 transitions. [2024-10-13 23:42:17,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:42:17,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 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 800 [2024-10-13 23:42:17,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:17,899 INFO L225 Difference]: With dead ends: 11575 [2024-10-13 23:42:17,899 INFO L226 Difference]: Without dead ends: 6055 [2024-10-13 23:42:17,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1603 GetRequests, 1594 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-10-13 23:42:17,903 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 221 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:17,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 8 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 23:42:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6055 states. [2024-10-13 23:42:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6055 to 5877. [2024-10-13 23:42:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5877 states, 5876 states have (on average 1.0706262763784888) internal successors, (6291), 5876 states have internal predecessors, (6291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 6291 transitions. [2024-10-13 23:42:17,947 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 6291 transitions. Word has length 800 [2024-10-13 23:42:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:17,948 INFO L471 AbstractCegarLoop]: Abstraction has 5877 states and 6291 transitions. [2024-10-13 23:42:17,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:17,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 6291 transitions. [2024-10-13 23:42:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2024-10-13 23:42:17,953 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:17,953 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:17,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 23:42:18,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 23:42:18,154 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:18,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:18,155 INFO L85 PathProgramCache]: Analyzing trace with hash 955592853, now seen corresponding path program 1 times [2024-10-13 23:42:18,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:18,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872702720] [2024-10-13 23:42:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:18,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2218 backedges. 1202 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2024-10-13 23:42:19,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:19,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872702720] [2024-10-13 23:42:19,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872702720] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:19,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357669142] [2024-10-13 23:42:19,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:19,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:19,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:19,056 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) [2024-10-13 23:42:19,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 23:42:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:19,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 23:42:19,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2218 backedges. 915 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2024-10-13 23:42:19,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:42:19,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357669142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:19,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:42:19,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-10-13 23:42:19,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869142267] [2024-10-13 23:42:19,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:19,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:42:19,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:42:19,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:19,428 INFO L87 Difference]: Start difference. First operand 5877 states and 6291 transitions. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:20,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:20,057 INFO L93 Difference]: Finished difference Result 13177 states and 14119 transitions. [2024-10-13 23:42:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:42:20,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 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 833 [2024-10-13 23:42:20,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:20,067 INFO L225 Difference]: With dead ends: 13177 [2024-10-13 23:42:20,067 INFO L226 Difference]: Without dead ends: 7479 [2024-10-13 23:42:20,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 832 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:20,071 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 178 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:20,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 57 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:42:20,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7479 states. [2024-10-13 23:42:20,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7479 to 6767. [2024-10-13 23:42:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6767 states, 6766 states have (on average 1.0693171741058232) internal successors, (7235), 6766 states have internal predecessors, (7235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 7235 transitions. [2024-10-13 23:42:20,171 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 7235 transitions. Word has length 833 [2024-10-13 23:42:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:20,172 INFO L471 AbstractCegarLoop]: Abstraction has 6767 states and 7235 transitions. [2024-10-13 23:42:20,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:20,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 7235 transitions. [2024-10-13 23:42:20,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2024-10-13 23:42:20,181 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:20,181 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:20,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 23:42:20,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:20,387 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:20,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:20,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1958248319, now seen corresponding path program 1 times [2024-10-13 23:42:20,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:20,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44940529] [2024-10-13 23:42:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 752 proven. 114 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2024-10-13 23:42:21,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:21,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44940529] [2024-10-13 23:42:21,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44940529] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:21,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842012983] [2024-10-13 23:42:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:21,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:21,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:21,171 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) [2024-10-13 23:42:21,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 23:42:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:21,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:42:21,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 866 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2024-10-13 23:42:21,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:42:21,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842012983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:21,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:42:21,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 23:42:21,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667226254] [2024-10-13 23:42:21,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:21,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:21,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:21,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:21,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:42:21,487 INFO L87 Difference]: Start difference. First operand 6767 states and 7235 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:21,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:21,882 INFO L93 Difference]: Finished difference Result 13711 states and 14650 transitions. [2024-10-13 23:42:21,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:21,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 835 [2024-10-13 23:42:21,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:21,888 INFO L225 Difference]: With dead ends: 13711 [2024-10-13 23:42:21,888 INFO L226 Difference]: Without dead ends: 7123 [2024-10-13 23:42:21,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:42:21,893 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 38 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:21,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 242 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 23:42:21,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2024-10-13 23:42:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 6589. [2024-10-13 23:42:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6589 states, 6588 states have (on average 1.0634486945962356) internal successors, (7006), 6588 states have internal predecessors, (7006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:21,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6589 states to 6589 states and 7006 transitions. [2024-10-13 23:42:21,946 INFO L78 Accepts]: Start accepts. Automaton has 6589 states and 7006 transitions. Word has length 835 [2024-10-13 23:42:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:21,947 INFO L471 AbstractCegarLoop]: Abstraction has 6589 states and 7006 transitions. [2024-10-13 23:42:21,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6589 states and 7006 transitions. [2024-10-13 23:42:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2024-10-13 23:42:21,953 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:21,953 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:21,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 23:42:22,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:22,154 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:22,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash 571672990, now seen corresponding path program 1 times [2024-10-13 23:42:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:22,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019023924] [2024-10-13 23:42:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:22,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2488 backedges. 1501 proven. 0 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2024-10-13 23:42:22,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:22,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019023924] [2024-10-13 23:42:22,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019023924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:22,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:22,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:42:22,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469505536] [2024-10-13 23:42:22,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:22,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:22,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:22,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:22,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:42:22,672 INFO L87 Difference]: Start difference. First operand 6589 states and 7006 transitions. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:23,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:23,063 INFO L93 Difference]: Finished difference Result 12999 states and 13832 transitions. [2024-10-13 23:42:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:23,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 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 919 [2024-10-13 23:42:23,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:23,070 INFO L225 Difference]: With dead ends: 12999 [2024-10-13 23:42:23,070 INFO L226 Difference]: Without dead ends: 6589 [2024-10-13 23:42:23,074 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 [2024-10-13 23:42:23,074 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 24 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:23,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 223 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 23:42:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2024-10-13 23:42:23,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 6411. [2024-10-13 23:42:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 6410 states have (on average 1.0586583463338533) internal successors, (6786), 6410 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 6786 transitions. [2024-10-13 23:42:23,119 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 6786 transitions. Word has length 919 [2024-10-13 23:42:23,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:23,120 INFO L471 AbstractCegarLoop]: Abstraction has 6411 states and 6786 transitions. [2024-10-13 23:42:23,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:23,120 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 6786 transitions. [2024-10-13 23:42:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2024-10-13 23:42:23,126 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:23,126 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:23,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 23:42:23,127 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:23,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1492286539, now seen corresponding path program 1 times [2024-10-13 23:42:23,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:23,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960552526] [2024-10-13 23:42:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:23,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2803 backedges. 713 proven. 339 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2024-10-13 23:42:23,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960552526] [2024-10-13 23:42:23,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960552526] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382325860] [2024-10-13 23:42:23,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:23,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:23,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:23,715 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:42:23,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 23:42:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:23,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:42:23,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2803 backedges. 1052 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2024-10-13 23:42:24,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:42:24,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382325860] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:24,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:42:24,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-13 23:42:24,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500799774] [2024-10-13 23:42:24,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:24,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:24,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:24,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:24,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:24,154 INFO L87 Difference]: Start difference. First operand 6411 states and 6786 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:24,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:24,548 INFO L93 Difference]: Finished difference Result 12821 states and 13571 transitions. [2024-10-13 23:42:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:24,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 993 [2024-10-13 23:42:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:24,555 INFO L225 Difference]: With dead ends: 12821 [2024-10-13 23:42:24,555 INFO L226 Difference]: Without dead ends: 6589 [2024-10-13 23:42:24,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 992 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:24,561 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 36 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:24,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 241 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 23:42:24,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2024-10-13 23:42:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 6055. [2024-10-13 23:42:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 6054 states have (on average 1.0462504129501156) internal successors, (6334), 6054 states have internal predecessors, (6334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 6334 transitions. [2024-10-13 23:42:24,641 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 6334 transitions. Word has length 993 [2024-10-13 23:42:24,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:24,642 INFO L471 AbstractCegarLoop]: Abstraction has 6055 states and 6334 transitions. [2024-10-13 23:42:24,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 6334 transitions. [2024-10-13 23:42:24,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2024-10-13 23:42:24,655 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:24,656 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:24,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 23:42:24,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:24,857 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:24,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:24,857 INFO L85 PathProgramCache]: Analyzing trace with hash 8315408, now seen corresponding path program 1 times [2024-10-13 23:42:24,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:24,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846157892] [2024-10-13 23:42:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:24,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3693 backedges. 1719 proven. 0 refuted. 0 times theorem prover too weak. 1974 trivial. 0 not checked. [2024-10-13 23:42:25,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:25,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846157892] [2024-10-13 23:42:25,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846157892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:25,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:25,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 23:42:25,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818089125] [2024-10-13 23:42:25,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:25,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 23:42:25,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:25,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 23:42:25,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:42:25,508 INFO L87 Difference]: Start difference. First operand 6055 states and 6334 transitions. Second operand has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:26,151 INFO L93 Difference]: Finished difference Result 11469 states and 11988 transitions. [2024-10-13 23:42:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 23:42:26,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 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 1007 [2024-10-13 23:42:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:26,158 INFO L225 Difference]: With dead ends: 11469 [2024-10-13 23:42:26,158 INFO L226 Difference]: Without dead ends: 5429 [2024-10-13 23:42:26,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:42:26,164 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 47 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:26,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 20 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:42:26,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5429 states. [2024-10-13 23:42:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5429 to 5386. [2024-10-13 23:42:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 1.0382544103992573) internal successors, (5591), 5385 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 5591 transitions. [2024-10-13 23:42:26,234 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 5591 transitions. Word has length 1007 [2024-10-13 23:42:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:26,234 INFO L471 AbstractCegarLoop]: Abstraction has 5386 states and 5591 transitions. [2024-10-13 23:42:26,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 5591 transitions. [2024-10-13 23:42:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2024-10-13 23:42:26,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:26,242 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 23:42:26,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 23:42:26,242 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:26,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:26,243 INFO L85 PathProgramCache]: Analyzing trace with hash -652247676, now seen corresponding path program 1 times [2024-10-13 23:42:26,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:26,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128136677] [2024-10-13 23:42:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:26,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3428 backedges. 1231 proven. 390 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2024-10-13 23:42:27,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:27,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128136677] [2024-10-13 23:42:27,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128136677] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:27,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887926778] [2024-10-13 23:42:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:27,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:27,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:27,118 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:42:27,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 23:42:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:27,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:42:27,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3428 backedges. 992 proven. 0 refuted. 0 times theorem prover too weak. 2436 trivial. 0 not checked. [2024-10-13 23:42:28,114 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:42:28,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887926778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:28,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:42:28,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-13 23:42:28,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246164018] [2024-10-13 23:42:28,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:28,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:28,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:28,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:28,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:42:28,116 INFO L87 Difference]: Start difference. First operand 5386 states and 5591 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:28,456 INFO L93 Difference]: Finished difference Result 12017 states and 12449 transitions. [2024-10-13 23:42:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:28,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1057 [2024-10-13 23:42:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:28,461 INFO L225 Difference]: With dead ends: 12017 [2024-10-13 23:42:28,462 INFO L226 Difference]: Without dead ends: 6810 [2024-10-13 23:42:28,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 1056 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:42:28,465 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:28,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 23:42:28,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2024-10-13 23:42:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 5564. [2024-10-13 23:42:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5564 states, 5563 states have (on average 1.037749415782851) internal successors, (5773), 5563 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:28,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 5773 transitions. [2024-10-13 23:42:28,506 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 5773 transitions. Word has length 1057 [2024-10-13 23:42:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:28,506 INFO L471 AbstractCegarLoop]: Abstraction has 5564 states and 5773 transitions. [2024-10-13 23:42:28,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:28,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 5773 transitions. [2024-10-13 23:42:28,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1393 [2024-10-13 23:42:28,515 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:28,516 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:28,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 23:42:28,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 23:42:28,717 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:28,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:28,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1476289790, now seen corresponding path program 1 times [2024-10-13 23:42:28,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:28,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453511639] [2024-10-13 23:42:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:28,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5988 backedges. 1412 proven. 0 refuted. 0 times theorem prover too weak. 4576 trivial. 0 not checked. [2024-10-13 23:42:29,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:29,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453511639] [2024-10-13 23:42:29,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453511639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:29,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:29,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:42:29,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568704926] [2024-10-13 23:42:29,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:29,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 23:42:29,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 23:42:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:42:29,557 INFO L87 Difference]: Start difference. First operand 5564 states and 5773 transitions. Second operand has 5 states, 5 states have (on average 66.2) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:30,298 INFO L93 Difference]: Finished difference Result 10973 states and 11390 transitions. [2024-10-13 23:42:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 23:42:30,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 66.2) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 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 1392 [2024-10-13 23:42:30,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:30,303 INFO L225 Difference]: With dead ends: 10973 [2024-10-13 23:42:30,303 INFO L226 Difference]: Without dead ends: 5564 [2024-10-13 23:42:30,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:42:30,307 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 101 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:30,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 20 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:42:30,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2024-10-13 23:42:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 5564. [2024-10-13 23:42:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5564 states, 5563 states have (on average 1.036670861046198) internal successors, (5767), 5563 states have internal predecessors, (5767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 5767 transitions. [2024-10-13 23:42:30,389 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 5767 transitions. Word has length 1392 [2024-10-13 23:42:30,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:30,389 INFO L471 AbstractCegarLoop]: Abstraction has 5564 states and 5767 transitions. [2024-10-13 23:42:30,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.2) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:30,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 5767 transitions. [2024-10-13 23:42:30,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1544 [2024-10-13 23:42:30,414 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:30,415 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:30,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-13 23:42:30,416 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:30,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:30,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1653898386, now seen corresponding path program 1 times [2024-10-13 23:42:30,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:30,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389855027] [2024-10-13 23:42:30,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:30,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7350 backedges. 822 proven. 951 refuted. 0 times theorem prover too weak. 5577 trivial. 0 not checked. [2024-10-13 23:42:31,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:31,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389855027] [2024-10-13 23:42:31,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389855027] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:31,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389529459] [2024-10-13 23:42:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:31,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:31,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:31,279 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:42:31,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 23:42:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:31,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:42:31,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7350 backedges. 1773 proven. 0 refuted. 0 times theorem prover too weak. 5577 trivial. 0 not checked. [2024-10-13 23:42:31,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:42:31,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389529459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:31,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:42:31,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-13 23:42:31,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257004172] [2024-10-13 23:42:31,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:31,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:31,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:31,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:31,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:31,843 INFO L87 Difference]: Start difference. First operand 5564 states and 5767 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:32,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:32,170 INFO L93 Difference]: Finished difference Result 12195 states and 12613 transitions. [2024-10-13 23:42:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:32,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 1543 [2024-10-13 23:42:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:32,174 INFO L225 Difference]: With dead ends: 12195 [2024-10-13 23:42:32,174 INFO L226 Difference]: Without dead ends: 4318 [2024-10-13 23:42:32,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1546 GetRequests, 1542 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:42:32,177 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 38 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:32,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 229 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 23:42:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4318 states. [2024-10-13 23:42:32,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4318 to 3962. [2024-10-13 23:42:32,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3961 states have (on average 1.0252461499621308) internal successors, (4061), 3961 states have internal predecessors, (4061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 4061 transitions. [2024-10-13 23:42:32,230 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 4061 transitions. Word has length 1543 [2024-10-13 23:42:32,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:32,231 INFO L471 AbstractCegarLoop]: Abstraction has 3962 states and 4061 transitions. [2024-10-13 23:42:32,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:32,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 4061 transitions. [2024-10-13 23:42:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1754 [2024-10-13 23:42:32,255 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:32,260 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 9, 9, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:32,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 23:42:32,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-13 23:42:32,461 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:32,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1231872821, now seen corresponding path program 1 times [2024-10-13 23:42:32,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:32,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379551703] [2024-10-13 23:42:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:32,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9921 backedges. 3134 proven. 0 refuted. 0 times theorem prover too weak. 6787 trivial. 0 not checked. [2024-10-13 23:42:33,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:33,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379551703] [2024-10-13 23:42:33,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379551703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:33,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:42:33,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:42:33,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430146597] [2024-10-13 23:42:33,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:33,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:42:33,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:33,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:42:33,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:42:33,514 INFO L87 Difference]: Start difference. First operand 3962 states and 4061 transitions. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:33,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:33,937 INFO L93 Difference]: Finished difference Result 7767 states and 7966 transitions. [2024-10-13 23:42:33,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:42:33,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 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 1753 [2024-10-13 23:42:33,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:33,940 INFO L225 Difference]: With dead ends: 7767 [2024-10-13 23:42:33,940 INFO L226 Difference]: Without dead ends: 4140 [2024-10-13 23:42:33,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:42:33,942 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:33,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 14 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 23:42:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2024-10-13 23:42:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3962. [2024-10-13 23:42:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3961 states have (on average 1.0239838424640242) internal successors, (4056), 3961 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 4056 transitions. [2024-10-13 23:42:33,994 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 4056 transitions. Word has length 1753 [2024-10-13 23:42:33,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:33,998 INFO L471 AbstractCegarLoop]: Abstraction has 3962 states and 4056 transitions. [2024-10-13 23:42:33,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:33,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 4056 transitions. [2024-10-13 23:42:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1865 [2024-10-13 23:42:34,027 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:42:34,027 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:42:34,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-13 23:42:34,028 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:42:34,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:42:34,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1853026556, now seen corresponding path program 1 times [2024-10-13 23:42:34,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:42:34,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229673980] [2024-10-13 23:42:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:34,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:42:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11270 backedges. 7069 proven. 57 refuted. 0 times theorem prover too weak. 4144 trivial. 0 not checked. [2024-10-13 23:42:35,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:42:35,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229673980] [2024-10-13 23:42:35,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229673980] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:42:35,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527656032] [2024-10-13 23:42:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:42:35,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:42:35,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:42:35,155 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:42:35,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 23:42:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:42:35,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:42:35,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:42:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11270 backedges. 6305 proven. 0 refuted. 0 times theorem prover too weak. 4965 trivial. 0 not checked. [2024-10-13 23:42:36,470 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:42:36,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527656032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:42:36,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:42:36,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 23:42:36,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628935071] [2024-10-13 23:42:36,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:42:36,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:42:36,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:42:36,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:42:36,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:42:36,473 INFO L87 Difference]: Start difference. First operand 3962 states and 4056 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:42:36,815 INFO L93 Difference]: Finished difference Result 7344 states and 7519 transitions. [2024-10-13 23:42:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:42:36,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 1864 [2024-10-13 23:42:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:42:36,817 INFO L225 Difference]: With dead ends: 7344 [2024-10-13 23:42:36,817 INFO L226 Difference]: Without dead ends: 0 [2024-10-13 23:42:36,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1868 GetRequests, 1863 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:42:36,820 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:42:36,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 198 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 23:42:36,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-13 23:42:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-13 23:42:36,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:36,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-13 23:42:36,821 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1864 [2024-10-13 23:42:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:42:36,822 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 23:42:36,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:42:36,822 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-13 23:42:36,822 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-13 23:42:36,824 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-13 23:42:36,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 23:42:37,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-13 23:42:37,028 INFO L407 BasicCegarLoop]: Path program 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] [2024-10-13 23:42:37,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-13 23:42:38,096 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 23:42:38,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:42:38 BoogieIcfgContainer [2024-10-13 23:42:38,114 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 23:42:38,114 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 23:42:38,114 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 23:42:38,114 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 23:42:38,115 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:41:57" (3/4) ... [2024-10-13 23:42:38,116 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 23:42:38,130 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-13 23:42:38,131 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-13 23:42:38,132 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 23:42:38,132 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-13 23:42:38,270 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 23:42:38,270 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 23:42:38,270 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 23:42:38,270 INFO L158 Benchmark]: Toolchain (without parser) took 42812.29ms. Allocated memory was 165.7MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 91.6MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 581.4MB. Max. memory is 16.1GB. [2024-10-13 23:42:38,271 INFO L158 Benchmark]: CDTParser took 4.06ms. Allocated memory is still 165.7MB. Free memory was 114.5MB in the beginning and 114.0MB in the end (delta: 486.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 23:42:38,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 546.44ms. Allocated memory was 165.7MB in the beginning and 232.8MB in the end (delta: 67.1MB). Free memory was 91.4MB in the beginning and 191.8MB in the end (delta: -100.4MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2024-10-13 23:42:38,271 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.08ms. Allocated memory is still 232.8MB. Free memory was 191.8MB in the beginning and 182.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-13 23:42:38,271 INFO L158 Benchmark]: Boogie Preprocessor took 121.20ms. Allocated memory is still 232.8MB. Free memory was 182.4MB in the beginning and 169.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 23:42:38,271 INFO L158 Benchmark]: RCFGBuilder took 1062.68ms. Allocated memory is still 232.8MB. Free memory was 169.8MB in the beginning and 173.6MB in the end (delta: -3.8MB). Peak memory consumption was 115.3MB. Max. memory is 16.1GB. [2024-10-13 23:42:38,272 INFO L158 Benchmark]: TraceAbstraction took 40824.89ms. Allocated memory was 232.8MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 172.5MB in the beginning and 1.2GB in the end (delta: -980.4MB). Peak memory consumption was 580.9MB. Max. memory is 16.1GB. [2024-10-13 23:42:38,272 INFO L158 Benchmark]: Witness Printer took 155.89ms. Allocated memory is still 1.8GB. Free memory was 1.2GB in the beginning and 1.1GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-13 23:42:38,273 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.06ms. Allocated memory is still 165.7MB. Free memory was 114.5MB in the beginning and 114.0MB in the end (delta: 486.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 546.44ms. Allocated memory was 165.7MB in the beginning and 232.8MB in the end (delta: 67.1MB). Free memory was 91.4MB in the beginning and 191.8MB in the end (delta: -100.4MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.08ms. Allocated memory is still 232.8MB. Free memory was 191.8MB in the beginning and 182.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 121.20ms. Allocated memory is still 232.8MB. Free memory was 182.4MB in the beginning and 169.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 1062.68ms. Allocated memory is still 232.8MB. Free memory was 169.8MB in the beginning and 173.6MB in the end (delta: -3.8MB). Peak memory consumption was 115.3MB. Max. memory is 16.1GB. * TraceAbstraction took 40824.89ms. Allocated memory was 232.8MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 172.5MB in the beginning and 1.2GB in the end (delta: -980.4MB). Peak memory consumption was 580.9MB. Max. memory is 16.1GB. * Witness Printer took 155.89ms. Allocated memory is still 1.8GB. Free memory was 1.2GB in the beginning and 1.1GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 149]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.7s, OverallIterations: 27, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2474 SdHoareTripleChecker+Valid, 12.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2474 mSDsluCounter, 3097 SdHoareTripleChecker+Invalid, 9.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 145 mSDsCounter, 1366 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14873 IncrementalHoareTripleChecker+Invalid, 16239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1366 mSolverCounterUnsat, 2952 mSDtfsCounter, 14873 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12066 GetRequests, 11984 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6767occurred in iteration=18, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 27 MinimizatonAttempts, 8053 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 18.3s InterpolantComputationTime, 30365 NumberOfCodeBlocks, 30365 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 31757 ConstructedInterpolants, 115 QuantifiedInterpolants, 99754 SizeOfPredicates, 1 NumberOfNonLiveVariables, 12943 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 41 InterpolantComputations, 26 PerfectInterpolantSequences, 102718/105936 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((((((((((((((((a24 == 1) && (9 <= a15)) && (0 <= ((long long) a12 + 42))) && ((((long long) a12 * 9) / 10) <= 558357)) || (((((a24 == 1) && (5 == a15)) && (a21 == 6)) && (526013 <= a12)) && ((((long long) a12 * 9) / 10) <= 558357))) || ((((a24 == 1) && (7 == a21)) && (((long long) 49 + a12) <= 0)) && (a15 == 8))) || (((((a24 == 1) && (7 == a21)) && (a12 <= 76)) && (a15 <= 7)) && (0 <= ((long long) a12 + 42)))) || (((((a24 == 1) && (a21 <= 6)) && ((5 < a15) || (a21 != 6))) && (0 <= ((long long) a12 + 42))) && ((((long long) a12 * 9) / 10) <= 558357))) || ((((a12 <= 80) && (a24 == 1)) && (a21 == 9)) && (0 <= ((long long) a12 + 42)))) || (((a12 <= 11) && (a24 == 1)) && (0 <= ((long long) a12 + 42)))) || ((((a24 == 1) && (a21 == 9)) && (((long long) 49 + a12) <= 0)) && (a15 == 8))) || ((((a21 == 8) && (a24 == 1)) && (a15 <= 7)) && ((((long long) a12 * 9) / 10) <= 558357))) || ((((a21 == 8) && (a12 <= 73282)) && (a24 == 1)) && (0 <= ((long long) a12 + 42)))) || ((((a24 == 1) && (a21 == 9)) && (a15 <= 7)) && ((((long long) a12 * 9) / 10) <= 558357))) || (((a12 <= 11) && (a21 <= 6)) && (a15 <= 7))) || ((((6 <= a15) && (a24 == 1)) && (a15 <= 7)) && ((((long long) a12 * 9) / 10) <= 558357))) || ((((a21 == 8) && (((long long) a12 + 479703) <= 0)) && (a24 == 1)) && (9 <= a15))) || (((a24 == 1) && (10 <= a21)) && ((((long long) a12 * 9) / 10) <= 558357))) RESULT: Ultimate proved your program to be correct! [2024-10-13 23:42:38,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE