./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/avg10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/reducercommutativity/avg10-2.i -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 431bc26901e3cf271c74e4f10a5bc241d4509dbbafd99aaf0126c46ffc8b7c33 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 09:50:39,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 09:50:39,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 09:50:39,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 09:50:39,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 09:50:39,428 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 09:50:39,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 09:50:39,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 09:50:39,429 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 09:50:39,430 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 09:50:39,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 09:50:39,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 09:50:39,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 09:50:39,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 09:50:39,435 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 09:50:39,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 09:50:39,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 09:50:39,435 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 09:50:39,435 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 09:50:39,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 09:50:39,436 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 09:50:39,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 09:50:39,436 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 09:50:39,436 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 09:50:39,451 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 09:50:39,451 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 09:50:39,452 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 09:50:39,452 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 09:50:39,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 09:50:39,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 09:50:39,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 09:50:39,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 09:50:39,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:50:39,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 09:50:39,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 09:50:39,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 09:50:39,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 09:50:39,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 09:50:39,455 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 09:50:39,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 09:50:39,455 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 09:50:39,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 09:50:39,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 431bc26901e3cf271c74e4f10a5bc241d4509dbbafd99aaf0126c46ffc8b7c33 [2024-11-08 09:50:39,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 09:50:39,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 09:50:39,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 09:50:39,699 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 09:50:39,700 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 09:50:39,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/avg10-2.i [2024-11-08 09:50:40,968 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 09:50:41,115 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 09:50:41,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg10-2.i [2024-11-08 09:50:41,129 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6efdf31/fc41c5e567db4407aa31fe84d9bf0603/FLAGc2bb474e8 [2024-11-08 09:50:41,144 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6efdf31/fc41c5e567db4407aa31fe84d9bf0603 [2024-11-08 09:50:41,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 09:50:41,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 09:50:41,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 09:50:41,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 09:50:41,155 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 09:50:41,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f2deae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41, skipping insertion in model container [2024-11-08 09:50:41,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,177 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 09:50:41,347 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg10-2.i[1282,1295] [2024-11-08 09:50:41,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:50:41,363 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 09:50:41,384 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg10-2.i[1282,1295] [2024-11-08 09:50:41,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:50:41,402 INFO L204 MainTranslator]: Completed translation [2024-11-08 09:50:41,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41 WrapperNode [2024-11-08 09:50:41,402 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 09:50:41,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 09:50:41,404 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 09:50:41,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 09:50:41,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,437 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-11-08 09:50:41,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 09:50:41,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 09:50:41,441 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 09:50:41,441 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 09:50:41,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,468 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-08 09:50:41,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 09:50:41,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 09:50:41,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 09:50:41,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 09:50:41,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (1/1) ... [2024-11-08 09:50:41,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:50:41,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:41,514 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) [2024-11-08 09:50:41,517 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 [2024-11-08 09:50:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 09:50:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 09:50:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 09:50:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 09:50:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 09:50:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 09:50:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2024-11-08 09:50:41,553 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2024-11-08 09:50:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 09:50:41,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 09:50:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 09:50:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 09:50:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 09:50:41,617 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 09:50:41,619 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 09:50:41,761 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-08 09:50:41,761 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 09:50:41,773 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 09:50:41,773 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 09:50:41,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:50:41 BoogieIcfgContainer [2024-11-08 09:50:41,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 09:50:41,776 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 09:50:41,776 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 09:50:41,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 09:50:41,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 09:50:41" (1/3) ... [2024-11-08 09:50:41,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602263eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:50:41, skipping insertion in model container [2024-11-08 09:50:41,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:50:41" (2/3) ... [2024-11-08 09:50:41,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602263eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:50:41, skipping insertion in model container [2024-11-08 09:50:41,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:50:41" (3/3) ... [2024-11-08 09:50:41,781 INFO L112 eAbstractionObserver]: Analyzing ICFG avg10-2.i [2024-11-08 09:50:41,794 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 09:50:41,794 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 09:50:41,844 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 09:50:41,850 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;@6274cfe0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 09:50:41,850 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 09:50:41,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:50:41,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 09:50:41,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:41,860 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:41,860 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:41,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:41,865 INFO L85 PathProgramCache]: Analyzing trace with hash -864475220, now seen corresponding path program 1 times [2024-11-08 09:50:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:41,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283974672] [2024-11-08 09:50:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:41,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:42,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 09:50:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:42,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 09:50:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:42,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 09:50:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 09:50:42,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:42,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283974672] [2024-11-08 09:50:42,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283974672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:42,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159889150] [2024-11-08 09:50:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:42,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:42,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:42,219 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) [2024-11-08 09:50:42,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 09:50:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:42,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 09:50:42,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 09:50:42,337 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:50:42,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159889150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:50:42,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:50:42,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-08 09:50:42,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496613883] [2024-11-08 09:50:42,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:50:42,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 09:50:42,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:42,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 09:50:42,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:50:42,366 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:50:42,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:42,401 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2024-11-08 09:50:42,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 09:50:42,409 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-11-08 09:50:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:42,414 INFO L225 Difference]: With dead ends: 50 [2024-11-08 09:50:42,415 INFO L226 Difference]: Without dead ends: 23 [2024-11-08 09:50:42,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:50:42,422 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:42,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:42,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-08 09:50:42,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-08 09:50:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:50:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-08 09:50:42,466 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2024-11-08 09:50:42,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:42,467 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-08 09:50:42,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:50:42,467 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-08 09:50:42,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 09:50:42,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:42,468 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:42,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 09:50:42,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-08 09:50:42,669 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:42,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:42,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1327298342, now seen corresponding path program 1 times [2024-11-08 09:50:42,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:42,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840384629] [2024-11-08 09:50:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:42,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:42,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 09:50:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:42,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 09:50:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:42,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 09:50:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 09:50:42,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:42,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840384629] [2024-11-08 09:50:42,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840384629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:42,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939275301] [2024-11-08 09:50:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:42,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:42,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:42,791 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) [2024-11-08 09:50:42,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 09:50:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:42,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 09:50:42,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:50:42,861 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:50:42,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939275301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:50:42,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:50:42,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 09:50:42,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425734831] [2024-11-08 09:50:42,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:50:42,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:50:42,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:42,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:50:42,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:50:42,864 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 09:50:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:42,879 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2024-11-08 09:50:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:50:42,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-08 09:50:42,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:42,880 INFO L225 Difference]: With dead ends: 44 [2024-11-08 09:50:42,881 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 09:50:42,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:50:42,882 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:42,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 09:50:42,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-08 09:50:42,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:50:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-08 09:50:42,886 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2024-11-08 09:50:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:42,886 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-08 09:50:42,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 09:50:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-08 09:50:42,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 09:50:42,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:42,887 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:42,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 09:50:43,088 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,SelfDestructingSolverStorable1 [2024-11-08 09:50:43,089 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:43,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:43,089 INFO L85 PathProgramCache]: Analyzing trace with hash 916084580, now seen corresponding path program 1 times [2024-11-08 09:50:43,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:43,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762416672] [2024-11-08 09:50:43,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:43,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:43,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:50:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:43,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 09:50:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:43,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 09:50:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:50:43,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762416672] [2024-11-08 09:50:43,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762416672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011227977] [2024-11-08 09:50:43,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:43,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:43,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:43,189 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) [2024-11-08 09:50:43,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 09:50:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:43,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 09:50:43,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 09:50:43,291 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:50:43,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011227977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:50:43,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:50:43,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 09:50:43,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667514848] [2024-11-08 09:50:43,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:50:43,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:50:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:43,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:50:43,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:50:43,293 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:50:43,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:43,306 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2024-11-08 09:50:43,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:50:43,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-08 09:50:43,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:43,311 INFO L225 Difference]: With dead ends: 43 [2024-11-08 09:50:43,311 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 09:50:43,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:50:43,314 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:43,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 09:50:43,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-08 09:50:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:50:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-08 09:50:43,323 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 31 [2024-11-08 09:50:43,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:43,324 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-08 09:50:43,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:50:43,325 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-08 09:50:43,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 09:50:43,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:43,326 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:43,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 09:50:43,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:43,527 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:43,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:43,528 INFO L85 PathProgramCache]: Analyzing trace with hash -456025118, now seen corresponding path program 1 times [2024-11-08 09:50:43,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:43,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493002006] [2024-11-08 09:50:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:43,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:43,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:50:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:43,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 09:50:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:43,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 09:50:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 09:50:43,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:43,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493002006] [2024-11-08 09:50:43,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493002006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:43,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179487608] [2024-11-08 09:50:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:43,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:43,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:43,654 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) [2024-11-08 09:50:43,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 09:50:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:43,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 09:50:43,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 09:50:43,730 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:50:43,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179487608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:50:43,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:50:43,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 09:50:43,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857155060] [2024-11-08 09:50:43,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:50:43,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:50:43,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:43,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:50:43,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:50:43,732 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:50:43,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:43,748 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-11-08 09:50:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:50:43,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-11-08 09:50:43,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:43,750 INFO L225 Difference]: With dead ends: 40 [2024-11-08 09:50:43,751 INFO L226 Difference]: Without dead ends: 27 [2024-11-08 09:50:43,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:50:43,753 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:43,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:43,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-08 09:50:43,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-08 09:50:43,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:50:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-08 09:50:43,763 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 37 [2024-11-08 09:50:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:43,764 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-08 09:50:43,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:50:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-08 09:50:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 09:50:43,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:43,766 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:43,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 09:50:43,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:43,967 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:43,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1225475744, now seen corresponding path program 1 times [2024-11-08 09:50:43,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:43,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599764746] [2024-11-08 09:50:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:43,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:44,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:50:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:44,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 09:50:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:44,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 09:50:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:50:44,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:44,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599764746] [2024-11-08 09:50:44,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599764746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:44,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842933304] [2024-11-08 09:50:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:44,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:44,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:44,094 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) [2024-11-08 09:50:44,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 09:50:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:44,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 09:50:44,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 09:50:44,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:50:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 09:50:44,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842933304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:50:44,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:50:44,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-08 09:50:44,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995981576] [2024-11-08 09:50:44,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:50:44,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 09:50:44,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:44,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 09:50:44,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 09:50:44,236 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:50:44,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:44,285 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2024-11-08 09:50:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 09:50:44,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2024-11-08 09:50:44,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:44,287 INFO L225 Difference]: With dead ends: 56 [2024-11-08 09:50:44,287 INFO L226 Difference]: Without dead ends: 35 [2024-11-08 09:50:44,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 09:50:44,290 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:44,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 104 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:44,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-08 09:50:44,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-08 09:50:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:50:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-08 09:50:44,297 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 39 [2024-11-08 09:50:44,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:44,297 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-08 09:50:44,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:50:44,298 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-08 09:50:44,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 09:50:44,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:44,299 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:44,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 09:50:44,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:44,500 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:44,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1635191272, now seen corresponding path program 2 times [2024-11-08 09:50:44,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:44,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973403844] [2024-11-08 09:50:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:44,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 09:50:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:44,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 09:50:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:44,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 09:50:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-08 09:50:44,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:44,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973403844] [2024-11-08 09:50:44,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973403844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:44,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798495144] [2024-11-08 09:50:44,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:50:44,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:44,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:44,639 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) [2024-11-08 09:50:44,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 09:50:44,718 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:50:44,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:50:44,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 09:50:44,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 09:50:44,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:50:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 09:50:44,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798495144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:50:44,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:50:44,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-08 09:50:44,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257693059] [2024-11-08 09:50:44,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:50:44,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 09:50:44,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:44,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 09:50:44,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 09:50:44,851 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 09:50:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:44,896 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2024-11-08 09:50:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 09:50:44,896 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2024-11-08 09:50:44,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:44,897 INFO L225 Difference]: With dead ends: 72 [2024-11-08 09:50:44,897 INFO L226 Difference]: Without dead ends: 49 [2024-11-08 09:50:44,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 09:50:44,898 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:44,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:44,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-08 09:50:44,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-11-08 09:50:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:50:44,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-08 09:50:44,903 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 51 [2024-11-08 09:50:44,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:44,903 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-08 09:50:44,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 09:50:44,903 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-08 09:50:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 09:50:44,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:44,904 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:44,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 09:50:45,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:45,105 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:45,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1202441462, now seen corresponding path program 3 times [2024-11-08 09:50:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:45,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151386430] [2024-11-08 09:50:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:45,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:45,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 09:50:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:45,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 09:50:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:45,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 09:50:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-08 09:50:45,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:45,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151386430] [2024-11-08 09:50:45,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151386430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:45,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751611721] [2024-11-08 09:50:45,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:50:45,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:45,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:45,228 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) [2024-11-08 09:50:45,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 09:50:45,295 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 09:50:45,295 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:50:45,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 09:50:45,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-08 09:50:45,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:50:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-08 09:50:45,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751611721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:50:45,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:50:45,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-08 09:50:45,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149312925] [2024-11-08 09:50:45,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:50:45,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 09:50:45,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:45,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 09:50:45,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-08 09:50:45,358 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:50:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:45,377 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-11-08 09:50:45,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 09:50:45,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2024-11-08 09:50:45,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:45,378 INFO L225 Difference]: With dead ends: 79 [2024-11-08 09:50:45,379 INFO L226 Difference]: Without dead ends: 56 [2024-11-08 09:50:45,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-08 09:50:45,379 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:45,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 71 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:45,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-08 09:50:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-08 09:50:45,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:50:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2024-11-08 09:50:45,384 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 65 [2024-11-08 09:50:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:45,385 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2024-11-08 09:50:45,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:50:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2024-11-08 09:50:45,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-08 09:50:45,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:45,386 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:45,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 09:50:45,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:45,587 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:45,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:45,587 INFO L85 PathProgramCache]: Analyzing trace with hash 651371522, now seen corresponding path program 4 times [2024-11-08 09:50:45,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:45,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774690887] [2024-11-08 09:50:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:45,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:45,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 09:50:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:45,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 09:50:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:45,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 09:50:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2024-11-08 09:50:45,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774690887] [2024-11-08 09:50:45,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774690887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050024363] [2024-11-08 09:50:45,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:50:45,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:45,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:45,792 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) [2024-11-08 09:50:45,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 09:50:45,864 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:50:45,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:50:45,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 09:50:45,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2024-11-08 09:50:45,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:50:45,975 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2024-11-08 09:50:45,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050024363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:50:45,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:50:45,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-08 09:50:45,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131713132] [2024-11-08 09:50:45,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:50:45,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 09:50:45,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:45,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 09:50:45,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-08 09:50:45,977 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 09:50:46,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:46,019 INFO L93 Difference]: Finished difference Result 95 states and 108 transitions. [2024-11-08 09:50:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 09:50:46,020 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-11-08 09:50:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:46,021 INFO L225 Difference]: With dead ends: 95 [2024-11-08 09:50:46,021 INFO L226 Difference]: Without dead ends: 64 [2024-11-08 09:50:46,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-08 09:50:46,022 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:46,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:46,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-08 09:50:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-08 09:50:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:50:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2024-11-08 09:50:46,027 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 89 [2024-11-08 09:50:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:46,027 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2024-11-08 09:50:46,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 09:50:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2024-11-08 09:50:46,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-08 09:50:46,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:46,029 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:46,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 09:50:46,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 09:50:46,230 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:46,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1309191418, now seen corresponding path program 5 times [2024-11-08 09:50:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:46,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772007220] [2024-11-08 09:50:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:46,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 09:50:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:46,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 09:50:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:46,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 09:50:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2024-11-08 09:50:46,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:46,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772007220] [2024-11-08 09:50:46,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772007220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:46,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133432145] [2024-11-08 09:50:46,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:50:46,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:46,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:46,365 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) [2024-11-08 09:50:46,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 09:50:46,713 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-08 09:50:46,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:50:46,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 09:50:46,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 450 proven. 4 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2024-11-08 09:50:46,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:50:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2024-11-08 09:50:46,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133432145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:50:46,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:50:46,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-08 09:50:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687457384] [2024-11-08 09:50:46,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:50:46,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 09:50:46,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:46,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 09:50:46,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 09:50:46,778 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:50:46,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:46,811 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2024-11-08 09:50:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 09:50:46,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 113 [2024-11-08 09:50:46,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:46,813 INFO L225 Difference]: With dead ends: 103 [2024-11-08 09:50:46,813 INFO L226 Difference]: Without dead ends: 72 [2024-11-08 09:50:46,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 09:50:46,813 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:46,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 88 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-08 09:50:46,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-08 09:50:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:50:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-08 09:50:46,824 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 113 [2024-11-08 09:50:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:46,825 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-08 09:50:46,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:50:46,825 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-08 09:50:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-08 09:50:46,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:46,828 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:46,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 09:50:47,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:47,029 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:47,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:47,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1292116494, now seen corresponding path program 6 times [2024-11-08 09:50:47,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:47,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420967589] [2024-11-08 09:50:47,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:47,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:47,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 09:50:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:47,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 09:50:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:47,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-11-08 09:50:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:50:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2024-11-08 09:50:47,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:50:47,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420967589] [2024-11-08 09:50:47,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420967589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:50:47,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558196830] [2024-11-08 09:50:47,226 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 09:50:47,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:50:47,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:50:47,227 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) [2024-11-08 09:50:47,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 09:50:47,417 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-08 09:50:47,417 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:50:47,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 09:50:47,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:50:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 450 proven. 36 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2024-11-08 09:50:47,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:50:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2024-11-08 09:50:47,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558196830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:50:47,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:50:47,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-08 09:50:47,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981938368] [2024-11-08 09:50:47,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:50:47,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 09:50:47,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:50:47,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 09:50:47,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-08 09:50:47,515 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:50:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:50:47,547 INFO L93 Difference]: Finished difference Result 109 states and 116 transitions. [2024-11-08 09:50:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 09:50:47,548 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 121 [2024-11-08 09:50:47,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:50:47,548 INFO L225 Difference]: With dead ends: 109 [2024-11-08 09:50:47,549 INFO L226 Difference]: Without dead ends: 78 [2024-11-08 09:50:47,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 240 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-08 09:50:47,549 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:50:47,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 88 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:50:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-08 09:50:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-08 09:50:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:50:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2024-11-08 09:50:47,557 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 121 [2024-11-08 09:50:47,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:50:47,558 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2024-11-08 09:50:47,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:50:47,558 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2024-11-08 09:50:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-08 09:50:47,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:50:47,562 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:50:47,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 09:50:47,762 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,SelfDestructingSolverStorable9 [2024-11-08 09:50:47,763 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:50:47,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:50:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash -275266580, now seen corresponding path program 7 times [2024-11-08 09:50:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:50:47,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103515519] [2024-11-08 09:50:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:50:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:50:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat