./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52a248b2b2cf395cf0c12ea6447af889ed3691d7fa3d2de2504a7728d19c705b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 14:52:26,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 14:52:26,427 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 14:52:26,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 14:52:26,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 14:52:26,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 14:52:26,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 14:52:26,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 14:52:26,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 14:52:26,459 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 14:52:26,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 14:52:26,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 14:52:26,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 14:52:26,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 14:52:26,462 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 14:52:26,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 14:52:26,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 14:52:26,463 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 14:52:26,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 14:52:26,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 14:52:26,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 14:52:26,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 14:52:26,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 14:52:26,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 14:52:26,467 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 14:52:26,467 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 14:52:26,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 14:52:26,467 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 14:52:26,467 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 14:52:26,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 14:52:26,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 14:52:26,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 14:52:26,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 14:52:26,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 14:52:26,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 14:52:26,469 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 14:52:26,469 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 14:52:26,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 14:52:26,469 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 14:52:26,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 14:52:26,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 14:52:26,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 14:52:26,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52a248b2b2cf395cf0c12ea6447af889ed3691d7fa3d2de2504a7728d19c705b [2024-10-12 14:52:26,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 14:52:26,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 14:52:26,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 14:52:26,696 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 14:52:26,696 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 14:52:26,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c [2024-10-12 14:52:27,855 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 14:52:28,003 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 14:52:28,007 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c [2024-10-12 14:52:28,014 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b504353/e1c6e69a94ed4a5dba16cb2942a29ed1/FLAGd31e3d8b0 [2024-10-12 14:52:28,026 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b504353/e1c6e69a94ed4a5dba16cb2942a29ed1 [2024-10-12 14:52:28,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 14:52:28,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 14:52:28,032 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 14:52:28,032 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 14:52:28,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 14:52:28,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afd0da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28, skipping insertion in model container [2024-10-12 14:52:28,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,057 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 14:52:28,189 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c[414,427] [2024-10-12 14:52:28,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 14:52:28,218 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 14:52:28,227 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c[414,427] [2024-10-12 14:52:28,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 14:52:28,255 INFO L204 MainTranslator]: Completed translation [2024-10-12 14:52:28,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28 WrapperNode [2024-10-12 14:52:28,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 14:52:28,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 14:52:28,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 14:52:28,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 14:52:28,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,281 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2024-10-12 14:52:28,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 14:52:28,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 14:52:28,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 14:52:28,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 14:52:28,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,318 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 4, 3]. 44 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-10-12 14:52:28,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 14:52:28,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 14:52:28,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 14:52:28,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 14:52:28,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (1/1) ... [2024-10-12 14:52:28,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 14:52:28,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:52:28,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 14:52:28,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 14:52:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 14:52:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 14:52:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 14:52:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 14:52:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 14:52:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 14:52:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 14:52:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-12 14:52:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 14:52:28,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 14:52:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 14:52:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 14:52:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-12 14:52:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 14:52:28,492 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 14:52:28,494 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 14:52:28,663 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-10-12 14:52:28,664 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 14:52:28,696 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 14:52:28,696 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-12 14:52:28,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:52:28 BoogieIcfgContainer [2024-10-12 14:52:28,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 14:52:28,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 14:52:28,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 14:52:28,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 14:52:28,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:52:28" (1/3) ... [2024-10-12 14:52:28,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364a1426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:52:28, skipping insertion in model container [2024-10-12 14:52:28,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:52:28" (2/3) ... [2024-10-12 14:52:28,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364a1426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:52:28, skipping insertion in model container [2024-10-12 14:52:28,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:52:28" (3/3) ... [2024-10-12 14:52:28,704 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-3-u.c [2024-10-12 14:52:28,716 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 14:52:28,717 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 14:52:28,768 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 14:52:28,775 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;@7b096eb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 14:52:28,775 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 14:52:28,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.9) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-12 14:52:28,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:28,787 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:28,787 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:28,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:28,791 INFO L85 PathProgramCache]: Analyzing trace with hash -35672779, now seen corresponding path program 1 times [2024-10-12 14:52:28,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:28,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709290996] [2024-10-12 14:52:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:28,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:28,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 14:52:28,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709290996] [2024-10-12 14:52:28,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709290996] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:52:28,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:52:28,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 14:52:28,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559636434] [2024-10-12 14:52:28,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:52:28,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 14:52:28,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 14:52:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 14:52:28,934 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.9) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:28,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:28,955 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2024-10-12 14:52:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 14:52:28,961 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-12 14:52:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:28,966 INFO L225 Difference]: With dead ends: 62 [2024-10-12 14:52:28,966 INFO L226 Difference]: Without dead ends: 30 [2024-10-12 14:52:28,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 14:52:28,970 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:28,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:52:28,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-12 14:52:28,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-12 14:52:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2024-10-12 14:52:28,996 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 14 [2024-10-12 14:52:28,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:28,996 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2024-10-12 14:52:28,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:28,997 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2024-10-12 14:52:28,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-12 14:52:28,997 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:28,997 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:28,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 14:52:28,998 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:28,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:29,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1206240891, now seen corresponding path program 1 times [2024-10-12 14:52:29,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:29,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224730292] [2024-10-12 14:52:29,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:29,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 14:52:29,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:29,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224730292] [2024-10-12 14:52:29,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224730292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:52:29,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:52:29,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 14:52:29,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646671245] [2024-10-12 14:52:29,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:52:29,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 14:52:29,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:29,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 14:52:29,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,128 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:29,210 INFO L93 Difference]: Finished difference Result 71 states and 98 transitions. [2024-10-12 14:52:29,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 14:52:29,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-12 14:52:29,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:29,211 INFO L225 Difference]: With dead ends: 71 [2024-10-12 14:52:29,211 INFO L226 Difference]: Without dead ends: 49 [2024-10-12 14:52:29,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,213 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 62 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:29,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 29 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 14:52:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-12 14:52:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2024-10-12 14:52:29,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2024-10-12 14:52:29,219 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2024-10-12 14:52:29,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:29,219 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2024-10-12 14:52:29,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,219 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2024-10-12 14:52:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-12 14:52:29,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:29,220 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:29,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 14:52:29,220 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:29,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:29,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2139015076, now seen corresponding path program 1 times [2024-10-12 14:52:29,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:29,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508771694] [2024-10-12 14:52:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:29,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 14:52:29,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:29,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508771694] [2024-10-12 14:52:29,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508771694] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:52:29,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:52:29,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 14:52:29,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733662893] [2024-10-12 14:52:29,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:52:29,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 14:52:29,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:29,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 14:52:29,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,312 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:29,398 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2024-10-12 14:52:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 14:52:29,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-12 14:52:29,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:29,399 INFO L225 Difference]: With dead ends: 71 [2024-10-12 14:52:29,399 INFO L226 Difference]: Without dead ends: 44 [2024-10-12 14:52:29,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,401 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 52 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:29,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 32 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 14:52:29,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-12 14:52:29,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2024-10-12 14:52:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2024-10-12 14:52:29,407 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 17 [2024-10-12 14:52:29,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:29,407 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2024-10-12 14:52:29,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,407 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2024-10-12 14:52:29,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-12 14:52:29,408 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:29,408 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:29,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 14:52:29,408 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:29,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:29,409 INFO L85 PathProgramCache]: Analyzing trace with hash 527282873, now seen corresponding path program 1 times [2024-10-12 14:52:29,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:29,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798588093] [2024-10-12 14:52:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:29,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 14:52:29,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:29,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798588093] [2024-10-12 14:52:29,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798588093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:52:29,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:52:29,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 14:52:29,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297127268] [2024-10-12 14:52:29,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:52:29,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 14:52:29,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:29,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 14:52:29,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,482 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:29,532 INFO L93 Difference]: Finished difference Result 69 states and 94 transitions. [2024-10-12 14:52:29,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 14:52:29,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-12 14:52:29,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:29,533 INFO L225 Difference]: With dead ends: 69 [2024-10-12 14:52:29,533 INFO L226 Difference]: Without dead ends: 40 [2024-10-12 14:52:29,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,534 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 48 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:29,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 39 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:52:29,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-12 14:52:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-10-12 14:52:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2024-10-12 14:52:29,542 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 20 [2024-10-12 14:52:29,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:29,542 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2024-10-12 14:52:29,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2024-10-12 14:52:29,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-12 14:52:29,543 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:29,543 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:29,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 14:52:29,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:29,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2131150869, now seen corresponding path program 1 times [2024-10-12 14:52:29,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:29,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018071421] [2024-10-12 14:52:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:29,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 14:52:29,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:29,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018071421] [2024-10-12 14:52:29,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018071421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:52:29,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:52:29,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 14:52:29,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845939856] [2024-10-12 14:52:29,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:52:29,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 14:52:29,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:29,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 14:52:29,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,619 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:29,685 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-10-12 14:52:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 14:52:29,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-12 14:52:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:29,686 INFO L225 Difference]: With dead ends: 75 [2024-10-12 14:52:29,687 INFO L226 Difference]: Without dead ends: 57 [2024-10-12 14:52:29,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,688 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 52 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:29,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 41 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 14:52:29,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-12 14:52:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 36. [2024-10-12 14:52:29,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-10-12 14:52:29,693 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 21 [2024-10-12 14:52:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:29,693 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-10-12 14:52:29,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-10-12 14:52:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-12 14:52:29,694 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:29,694 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:29,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 14:52:29,695 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:29,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:29,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1215531875, now seen corresponding path program 1 times [2024-10-12 14:52:29,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:29,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652002852] [2024-10-12 14:52:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:29,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 14:52:29,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:29,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652002852] [2024-10-12 14:52:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652002852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:52:29,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:52:29,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 14:52:29,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200154630] [2024-10-12 14:52:29,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:52:29,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 14:52:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 14:52:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,776 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:29,833 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2024-10-12 14:52:29,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 14:52:29,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-10-12 14:52:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:29,837 INFO L225 Difference]: With dead ends: 72 [2024-10-12 14:52:29,837 INFO L226 Difference]: Without dead ends: 49 [2024-10-12 14:52:29,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,838 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 53 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:29,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 41 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:52:29,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-12 14:52:29,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2024-10-12 14:52:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2024-10-12 14:52:29,844 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 24 [2024-10-12 14:52:29,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:29,844 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2024-10-12 14:52:29,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,845 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2024-10-12 14:52:29,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-12 14:52:29,845 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:29,845 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:29,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 14:52:29,845 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:29,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:29,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1815143859, now seen corresponding path program 1 times [2024-10-12 14:52:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:29,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567535155] [2024-10-12 14:52:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 14:52:29,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:29,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567535155] [2024-10-12 14:52:29,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567535155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:52:29,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:52:29,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 14:52:29,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933756170] [2024-10-12 14:52:29,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:52:29,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 14:52:29,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:29,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 14:52:29,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,908 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:29,948 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2024-10-12 14:52:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 14:52:29,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-12 14:52:29,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:29,949 INFO L225 Difference]: With dead ends: 66 [2024-10-12 14:52:29,950 INFO L226 Difference]: Without dead ends: 42 [2024-10-12 14:52:29,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:29,951 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:29,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 50 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:52:29,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-12 14:52:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2024-10-12 14:52:29,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2024-10-12 14:52:29,958 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 27 [2024-10-12 14:52:29,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:29,958 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2024-10-12 14:52:29,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:29,962 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2024-10-12 14:52:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-12 14:52:29,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:29,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:29,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 14:52:29,963 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:29,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:29,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1487991508, now seen corresponding path program 1 times [2024-10-12 14:52:29,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:29,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348460127] [2024-10-12 14:52:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:29,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:52:30,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:30,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348460127] [2024-10-12 14:52:30,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348460127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:52:30,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:52:30,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 14:52:30,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981164678] [2024-10-12 14:52:30,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:52:30,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 14:52:30,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:30,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 14:52:30,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:30,058 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:30,116 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2024-10-12 14:52:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 14:52:30,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-12 14:52:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:30,117 INFO L225 Difference]: With dead ends: 55 [2024-10-12 14:52:30,117 INFO L226 Difference]: Without dead ends: 43 [2024-10-12 14:52:30,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 14:52:30,119 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:30,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 22 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:52:30,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-12 14:52:30,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-10-12 14:52:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2024-10-12 14:52:30,132 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 28 [2024-10-12 14:52:30,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:30,133 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2024-10-12 14:52:30,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,133 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2024-10-12 14:52:30,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-12 14:52:30,133 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:30,133 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:30,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 14:52:30,134 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:30,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:30,134 INFO L85 PathProgramCache]: Analyzing trace with hash -478582243, now seen corresponding path program 1 times [2024-10-12 14:52:30,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:30,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064568191] [2024-10-12 14:52:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:30,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:52:30,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:30,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064568191] [2024-10-12 14:52:30,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064568191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:52:30,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:52:30,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 14:52:30,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571232949] [2024-10-12 14:52:30,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:52:30,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 14:52:30,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 14:52:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:30,207 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:30,257 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2024-10-12 14:52:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 14:52:30,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-12 14:52:30,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:30,258 INFO L225 Difference]: With dead ends: 59 [2024-10-12 14:52:30,259 INFO L226 Difference]: Without dead ends: 42 [2024-10-12 14:52:30,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 14:52:30,260 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:30,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 26 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:52:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-12 14:52:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-10-12 14:52:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-10-12 14:52:30,266 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 31 [2024-10-12 14:52:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:30,266 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-10-12 14:52:30,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-10-12 14:52:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 14:52:30,267 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:30,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:30,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 14:52:30,268 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:30,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:30,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1991166482, now seen corresponding path program 1 times [2024-10-12 14:52:30,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:30,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717838291] [2024-10-12 14:52:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:30,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:52:30,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:30,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717838291] [2024-10-12 14:52:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717838291] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 14:52:30,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 14:52:30,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 14:52:30,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681022409] [2024-10-12 14:52:30,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 14:52:30,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 14:52:30,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:30,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 14:52:30,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 14:52:30,321 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:30,373 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2024-10-12 14:52:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 14:52:30,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-12 14:52:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:30,374 INFO L225 Difference]: With dead ends: 59 [2024-10-12 14:52:30,374 INFO L226 Difference]: Without dead ends: 41 [2024-10-12 14:52:30,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 14:52:30,375 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:30,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 31 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 14:52:30,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-12 14:52:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-12 14:52:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2024-10-12 14:52:30,383 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 34 [2024-10-12 14:52:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:30,383 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2024-10-12 14:52:30,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,383 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2024-10-12 14:52:30,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-12 14:52:30,384 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:30,384 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:30,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 14:52:30,384 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:30,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:30,385 INFO L85 PathProgramCache]: Analyzing trace with hash -261758194, now seen corresponding path program 1 times [2024-10-12 14:52:30,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:30,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309511819] [2024-10-12 14:52:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:30,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:52:30,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:30,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309511819] [2024-10-12 14:52:30,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309511819] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:52:30,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452654734] [2024-10-12 14:52:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:30,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:52:30,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:52:30,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:52:30,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 14:52:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:30,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 14:52:30,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:52:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:52:30,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:52:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:52:30,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452654734] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:52:30,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:52:30,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-12 14:52:30,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948302476] [2024-10-12 14:52:30,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:52:30,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 14:52:30,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:30,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 14:52:30,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-10-12 14:52:30,612 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:30,709 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2024-10-12 14:52:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 14:52:30,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-12 14:52:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:30,711 INFO L225 Difference]: With dead ends: 99 [2024-10-12 14:52:30,711 INFO L226 Difference]: Without dead ends: 62 [2024-10-12 14:52:30,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-12 14:52:30,712 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:30,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 83 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 14:52:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-12 14:52:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 53. [2024-10-12 14:52:30,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2024-10-12 14:52:30,730 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 35 [2024-10-12 14:52:30,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:30,731 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2024-10-12 14:52:30,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:30,732 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2024-10-12 14:52:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 14:52:30,733 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:30,733 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:30,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 14:52:30,934 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,SelfDestructingSolverStorable10 [2024-10-12 14:52:30,935 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:30,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:30,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1901619790, now seen corresponding path program 2 times [2024-10-12 14:52:30,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:30,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4967617] [2024-10-12 14:52:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:30,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:52:31,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4967617] [2024-10-12 14:52:31,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4967617] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:52:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704230911] [2024-10-12 14:52:31,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 14:52:31,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:52:31,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:52:31,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:52:31,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 14:52:31,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 14:52:31,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:52:31,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 14:52:31,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:52:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:52:31,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:52:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:52:31,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704230911] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:52:31,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:52:31,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-10-12 14:52:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532088850] [2024-10-12 14:52:31,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:52:31,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 14:52:31,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:31,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 14:52:31,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-10-12 14:52:31,260 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:31,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:31,437 INFO L93 Difference]: Finished difference Result 153 states and 199 transitions. [2024-10-12 14:52:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 14:52:31,437 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-12 14:52:31,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:31,438 INFO L225 Difference]: With dead ends: 153 [2024-10-12 14:52:31,438 INFO L226 Difference]: Without dead ends: 104 [2024-10-12 14:52:31,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-10-12 14:52:31,439 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 161 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:31,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 120 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 14:52:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-12 14:52:31,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 77. [2024-10-12 14:52:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 76 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2024-10-12 14:52:31,449 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 38 [2024-10-12 14:52:31,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:31,449 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2024-10-12 14:52:31,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:31,449 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2024-10-12 14:52:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-12 14:52:31,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:31,449 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:31,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 14:52:31,650 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,SelfDestructingSolverStorable11 [2024-10-12 14:52:31,650 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:31,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:31,651 INFO L85 PathProgramCache]: Analyzing trace with hash 808278066, now seen corresponding path program 3 times [2024-10-12 14:52:31,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:31,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587866689] [2024-10-12 14:52:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:31,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 14:52:31,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:31,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587866689] [2024-10-12 14:52:31,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587866689] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:52:31,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122001214] [2024-10-12 14:52:31,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 14:52:31,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:52:31,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:52:31,869 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:52:31,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 14:52:31,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 14:52:31,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:52:31,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 14:52:31,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:52:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-12 14:52:32,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:52:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-12 14:52:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122001214] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:52:32,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:52:32,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2024-10-12 14:52:32,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926936250] [2024-10-12 14:52:32,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:52:32,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 14:52:32,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:32,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 14:52:32,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-10-12 14:52:32,053 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:33,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:33,300 INFO L93 Difference]: Finished difference Result 502 states and 617 transitions. [2024-10-12 14:52:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-10-12 14:52:33,300 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-10-12 14:52:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:33,302 INFO L225 Difference]: With dead ends: 502 [2024-10-12 14:52:33,302 INFO L226 Difference]: Without dead ends: 429 [2024-10-12 14:52:33,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1772, Invalid=3778, Unknown=0, NotChecked=0, Total=5550 [2024-10-12 14:52:33,303 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1745 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:33,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 109 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 14:52:33,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-10-12 14:52:33,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 132. [2024-10-12 14:52:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.213740458015267) internal successors, (159), 131 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2024-10-12 14:52:33,318 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 44 [2024-10-12 14:52:33,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:33,318 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2024-10-12 14:52:33,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:33,319 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2024-10-12 14:52:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-12 14:52:33,322 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:33,322 INFO L215 NwaCegarLoop]: trace histogram [44, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:33,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 14:52:33,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:52:33,523 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:33,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1432390284, now seen corresponding path program 4 times [2024-10-12 14:52:33,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:33,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861334626] [2024-10-12 14:52:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:33,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 443 proven. 66 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2024-10-12 14:52:33,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:33,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861334626] [2024-10-12 14:52:33,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861334626] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:52:33,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159164619] [2024-10-12 14:52:33,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 14:52:33,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:52:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:52:33,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:52:33,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 14:52:33,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 14:52:33,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:52:33,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 14:52:33,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:52:34,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 457 proven. 1 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-10-12 14:52:34,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:52:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 456 proven. 2 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-10-12 14:52:34,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159164619] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:52:34,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:52:34,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 24 [2024-10-12 14:52:34,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674014154] [2024-10-12 14:52:34,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:52:34,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 14:52:34,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:34,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 14:52:34,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2024-10-12 14:52:34,167 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:35,051 INFO L93 Difference]: Finished difference Result 581 states and 691 transitions. [2024-10-12 14:52:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-12 14:52:35,051 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-10-12 14:52:35,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:35,053 INFO L225 Difference]: With dead ends: 581 [2024-10-12 14:52:35,053 INFO L226 Difference]: Without dead ends: 454 [2024-10-12 14:52:35,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1101, Invalid=2805, Unknown=0, NotChecked=0, Total=3906 [2024-10-12 14:52:35,054 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 983 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:35,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 83 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 14:52:35,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-10-12 14:52:35,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 238. [2024-10-12 14:52:35,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.1940928270042195) internal successors, (283), 237 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 283 transitions. [2024-10-12 14:52:35,079 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 283 transitions. Word has length 96 [2024-10-12 14:52:35,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:35,079 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 283 transitions. [2024-10-12 14:52:35,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 283 transitions. [2024-10-12 14:52:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-10-12 14:52:35,080 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:35,080 INFO L215 NwaCegarLoop]: trace histogram [96, 8, 8, 8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:35,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 14:52:35,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:52:35,281 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:35,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:35,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1522460980, now seen corresponding path program 5 times [2024-10-12 14:52:35,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:35,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218953962] [2024-10-12 14:52:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:35,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5472 backedges. 1198 proven. 78 refuted. 0 times theorem prover too weak. 4196 trivial. 0 not checked. [2024-10-12 14:52:35,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218953962] [2024-10-12 14:52:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218953962] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:52:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174163281] [2024-10-12 14:52:35,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 14:52:35,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:52:35,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:52:35,852 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:52:35,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 14:52:38,511 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-10-12 14:52:38,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:52:38,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 14:52:38,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:52:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5472 backedges. 3520 proven. 185 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2024-10-12 14:52:38,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:52:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5472 backedges. 3520 proven. 185 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2024-10-12 14:52:39,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174163281] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:52:39,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:52:39,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 48 [2024-10-12 14:52:39,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114606252] [2024-10-12 14:52:39,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:52:39,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-12 14:52:39,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:39,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-12 14:52:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=1758, Unknown=0, NotChecked=0, Total=2256 [2024-10-12 14:52:39,051 INFO L87 Difference]: Start difference. First operand 238 states and 283 transitions. Second operand has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:42,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:42,396 INFO L93 Difference]: Finished difference Result 1333 states and 1593 transitions. [2024-10-12 14:52:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-10-12 14:52:42,397 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2024-10-12 14:52:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:42,400 INFO L225 Difference]: With dead ends: 1333 [2024-10-12 14:52:42,400 INFO L226 Difference]: Without dead ends: 1113 [2024-10-12 14:52:42,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9040 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6066, Invalid=20340, Unknown=0, NotChecked=0, Total=26406 [2024-10-12 14:52:42,404 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4087 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 1095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1095 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:42,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4087 Valid, 490 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1095 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 14:52:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-10-12 14:52:42,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 782. [2024-10-12 14:52:42,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 1.176696542893726) internal successors, (919), 781 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 919 transitions. [2024-10-12 14:52:42,530 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 919 transitions. Word has length 160 [2024-10-12 14:52:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:42,531 INFO L471 AbstractCegarLoop]: Abstraction has 782 states and 919 transitions. [2024-10-12 14:52:42,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:42,531 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 919 transitions. [2024-10-12 14:52:42,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-10-12 14:52:42,536 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:42,536 INFO L215 NwaCegarLoop]: trace histogram [364, 28, 28, 28, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:42,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 14:52:42,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 14:52:42,737 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:42,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:42,738 INFO L85 PathProgramCache]: Analyzing trace with hash 114632436, now seen corresponding path program 6 times [2024-10-12 14:52:42,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:42,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555565721] [2024-10-12 14:52:42,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:42,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 77532 backedges. 5327 proven. 91 refuted. 0 times theorem prover too weak. 72114 trivial. 0 not checked. [2024-10-12 14:52:44,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:44,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555565721] [2024-10-12 14:52:44,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555565721] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:52:44,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757547930] [2024-10-12 14:52:44,199 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 14:52:44,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:52:44,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:52:44,201 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:52:44,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 14:52:44,525 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-12 14:52:44,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:52:44,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 14:52:44,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:52:45,466 INFO L134 CoverageAnalysis]: Checked inductivity of 77532 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 77531 trivial. 0 not checked. [2024-10-12 14:52:45,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:52:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 77532 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 77531 trivial. 0 not checked. [2024-10-12 14:52:45,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757547930] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:52:45,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:52:45,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 4, 4] total 22 [2024-10-12 14:52:45,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927859046] [2024-10-12 14:52:45,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:52:45,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-12 14:52:45,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:45,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-12 14:52:45,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-10-12 14:52:45,910 INFO L87 Difference]: Start difference. First operand 782 states and 919 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:47,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:47,166 INFO L93 Difference]: Finished difference Result 2757 states and 3402 transitions. [2024-10-12 14:52:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-10-12 14:52:47,167 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 488 [2024-10-12 14:52:47,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:47,174 INFO L225 Difference]: With dead ends: 2757 [2024-10-12 14:52:47,174 INFO L226 Difference]: Without dead ends: 1994 [2024-10-12 14:52:47,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 969 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2155, Invalid=4651, Unknown=0, NotChecked=0, Total=6806 [2024-10-12 14:52:47,176 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2118 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2118 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:47,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2118 Valid, 97 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 14:52:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2024-10-12 14:52:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 852. [2024-10-12 14:52:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.1774383078730906) internal successors, (1002), 851 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1002 transitions. [2024-10-12 14:52:47,281 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1002 transitions. Word has length 488 [2024-10-12 14:52:47,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:47,282 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1002 transitions. [2024-10-12 14:52:47,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:47,282 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1002 transitions. [2024-10-12 14:52:47,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-10-12 14:52:47,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:47,287 INFO L215 NwaCegarLoop]: trace histogram [392, 28, 28, 28, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:47,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 14:52:47,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 14:52:47,488 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:47,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:47,489 INFO L85 PathProgramCache]: Analyzing trace with hash -577488202, now seen corresponding path program 7 times [2024-10-12 14:52:47,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:47,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972957727] [2024-10-12 14:52:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:47,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 88961 backedges. 6110 proven. 105 refuted. 0 times theorem prover too weak. 82746 trivial. 0 not checked. [2024-10-12 14:52:49,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:49,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972957727] [2024-10-12 14:52:49,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972957727] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:52:49,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695199422] [2024-10-12 14:52:49,000 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 14:52:49,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:52:49,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:52:49,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:52:49,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 14:52:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:49,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 3918 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 14:52:49,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:52:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 88961 backedges. 6110 proven. 105 refuted. 0 times theorem prover too weak. 82746 trivial. 0 not checked. [2024-10-12 14:52:49,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:52:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 88961 backedges. 6110 proven. 105 refuted. 0 times theorem prover too weak. 82746 trivial. 0 not checked. [2024-10-12 14:52:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695199422] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:52:50,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:52:50,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 48 [2024-10-12 14:52:50,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038632071] [2024-10-12 14:52:50,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:52:50,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-12 14:52:50,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:50,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-12 14:52:50,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=1325, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 14:52:50,201 INFO L87 Difference]: Start difference. First operand 852 states and 1002 transitions. Second operand has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 48 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:51,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:52:51,020 INFO L93 Difference]: Finished difference Result 2555 states and 3526 transitions. [2024-10-12 14:52:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-12 14:52:51,021 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 48 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 537 [2024-10-12 14:52:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:52:51,026 INFO L225 Difference]: With dead ends: 2555 [2024-10-12 14:52:51,026 INFO L226 Difference]: Without dead ends: 1723 [2024-10-12 14:52:51,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1104 GetRequests, 1042 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1552, Invalid=2480, Unknown=0, NotChecked=0, Total=4032 [2024-10-12 14:52:51,028 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 696 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 14:52:51,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 304 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 14:52:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2024-10-12 14:52:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1636. [2024-10-12 14:52:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 1.1608562691131499) internal successors, (1898), 1635 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1898 transitions. [2024-10-12 14:52:51,240 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1898 transitions. Word has length 537 [2024-10-12 14:52:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:52:51,240 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 1898 transitions. [2024-10-12 14:52:51,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 48 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:52:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1898 transitions. [2024-10-12 14:52:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2024-10-12 14:52:51,245 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:52:51,245 INFO L215 NwaCegarLoop]: trace histogram [840, 28, 28, 28, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:52:51,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 14:52:51,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:52:51,446 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:52:51,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:52:51,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1614767434, now seen corresponding path program 8 times [2024-10-12 14:52:51,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:52:51,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488122846] [2024-10-12 14:52:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:52:51,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:52:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:52:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 377249 backedges. 25982 proven. 465 refuted. 0 times theorem prover too weak. 350802 trivial. 0 not checked. [2024-10-12 14:52:56,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:52:56,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488122846] [2024-10-12 14:52:56,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488122846] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:52:56,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567389645] [2024-10-12 14:52:56,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 14:52:56,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:52:56,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:52:56,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:52:56,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 14:52:57,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 14:52:57,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:52:57,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 7950 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-12 14:52:57,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:52:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 377249 backedges. 25982 proven. 465 refuted. 0 times theorem prover too weak. 350802 trivial. 0 not checked. [2024-10-12 14:52:58,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:52:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 377249 backedges. 25982 proven. 465 refuted. 0 times theorem prover too weak. 350802 trivial. 0 not checked. [2024-10-12 14:52:59,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567389645] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:52:59,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:52:59,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 96 [2024-10-12 14:52:59,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890962829] [2024-10-12 14:52:59,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:52:59,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-10-12 14:52:59,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:52:59,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-10-12 14:52:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=5213, Unknown=0, NotChecked=0, Total=9312 [2024-10-12 14:52:59,200 INFO L87 Difference]: Start difference. First operand 1636 states and 1898 transitions. Second operand has 97 states, 97 states have (on average 1.402061855670103) internal successors, (136), 96 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:01,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:53:01,352 INFO L93 Difference]: Finished difference Result 4987 states and 6854 transitions. [2024-10-12 14:53:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-10-12 14:53:01,353 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.402061855670103) internal successors, (136), 96 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 985 [2024-10-12 14:53:01,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:53:01,363 INFO L225 Difference]: With dead ends: 4987 [2024-10-12 14:53:01,363 INFO L226 Difference]: Without dead ends: 3387 [2024-10-12 14:53:01,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2032 GetRequests, 1906 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5825 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6176, Invalid=10080, Unknown=0, NotChecked=0, Total=16256 [2024-10-12 14:53:01,367 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 1966 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 14:53:01,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 347 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 14:53:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2024-10-12 14:53:01,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 3204. [2024-10-12 14:53:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3204 states, 3203 states have (on average 1.1520449578520138) internal successors, (3690), 3203 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:01,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 3690 transitions. [2024-10-12 14:53:01,880 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 3690 transitions. Word has length 985 [2024-10-12 14:53:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:53:01,881 INFO L471 AbstractCegarLoop]: Abstraction has 3204 states and 3690 transitions. [2024-10-12 14:53:01,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.402061855670103) internal successors, (136), 96 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:01,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 3690 transitions. [2024-10-12 14:53:01,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1882 [2024-10-12 14:53:01,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:53:01,897 INFO L215 NwaCegarLoop]: trace histogram [1736, 28, 28, 28, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:53:01,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 14:53:02,097 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,SelfDestructingSolverStorable17 [2024-10-12 14:53:02,098 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:53:02,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:53:02,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1445550774, now seen corresponding path program 9 times [2024-10-12 14:53:02,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:53:02,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918149294] [2024-10-12 14:53:02,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:53:02,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:53:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 14:53:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1555937 backedges. 107198 proven. 1953 refuted. 0 times theorem prover too weak. 1446786 trivial. 0 not checked. [2024-10-12 14:53:21,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 14:53:21,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918149294] [2024-10-12 14:53:21,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918149294] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 14:53:21,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902803589] [2024-10-12 14:53:21,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 14:53:21,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:53:21,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 14:53:21,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 14:53:21,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 14:53:23,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 14:53:23,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 14:53:23,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 14:53:23,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 14:53:24,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1555937 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1555936 trivial. 0 not checked. [2024-10-12 14:53:24,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 14:53:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1555937 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1555936 trivial. 0 not checked. [2024-10-12 14:53:26,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902803589] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 14:53:26,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 14:53:26,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 4, 4] total 71 [2024-10-12 14:53:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661861665] [2024-10-12 14:53:26,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 14:53:26,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-10-12 14:53:26,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 14:53:26,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-10-12 14:53:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2106, Invalid=3006, Unknown=0, NotChecked=0, Total=5112 [2024-10-12 14:53:26,102 INFO L87 Difference]: Start difference. First operand 3204 states and 3690 transitions. Second operand has 72 states, 72 states have (on average 1.9444444444444444) internal successors, (140), 71 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:47,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 14:53:47,345 INFO L93 Difference]: Finished difference Result 13218 states and 16043 transitions. [2024-10-12 14:53:47,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2024-10-12 14:53:47,345 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.9444444444444444) internal successors, (140), 71 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1881 [2024-10-12 14:53:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 14:53:47,372 INFO L225 Difference]: With dead ends: 13218 [2024-10-12 14:53:47,372 INFO L226 Difference]: Without dead ends: 10082 [2024-10-12 14:53:47,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4145 GetRequests, 3755 SyntacticMatches, 0 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51360 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=45306, Invalid=107966, Unknown=0, NotChecked=0, Total=153272 [2024-10-12 14:53:47,384 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 12045 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 2186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12045 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2186 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 14:53:47,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12045 Valid, 266 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2186 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 14:53:47,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10082 states. [2024-10-12 14:53:47,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10082 to 3274. [2024-10-12 14:53:47,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3273 states have (on average 1.1527650473571647) internal successors, (3773), 3273 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:47,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 3773 transitions. [2024-10-12 14:53:47,862 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 3773 transitions. Word has length 1881 [2024-10-12 14:53:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 14:53:47,863 INFO L471 AbstractCegarLoop]: Abstraction has 3274 states and 3773 transitions. [2024-10-12 14:53:47,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.9444444444444444) internal successors, (140), 71 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 14:53:47,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 3773 transitions. [2024-10-12 14:53:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1931 [2024-10-12 14:53:47,911 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 14:53:47,911 INFO L215 NwaCegarLoop]: trace histogram [1764, 28, 28, 28, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 14:53:47,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 14:53:48,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 14:53:48,112 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 14:53:48,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 14:53:48,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1952965819, now seen corresponding path program 10 times [2024-10-12 14:53:48,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 14:53:48,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925325314] [2024-10-12 14:53:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 14:53:48,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 14:53:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat