./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-c7c6ca5-m [2024-11-08 10:04:00,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:04:00,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:04:00,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:04:00,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:04:00,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:04:00,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:04:00,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:04:00,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:04:00,140 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:04:00,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:04:00,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:04:00,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:04:00,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:04:00,149 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:04:00,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:04:00,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:04:00,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:04:00,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:04:00,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:04:00,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:04:00,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:04:00,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:04:00,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:04:00,154 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:04:00,154 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:04:00,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:04:00,154 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:04:00,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:04:00,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:04:00,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:04:00,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:04:00,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:04:00,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:04:00,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:04:00,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:04:00,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:04:00,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:04:00,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:04:00,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:04:00,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:04:00,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:04:00,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52a248b2b2cf395cf0c12ea6447af889ed3691d7fa3d2de2504a7728d19c705b [2024-11-08 10:04:00,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:04:00,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:04:00,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:04:00,390 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:04:00,391 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:04:00,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c [2024-11-08 10:04:01,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:04:01,898 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:04:01,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c [2024-11-08 10:04:01,913 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac8b8f17/d915357011d843ee9451c47489f58d0f/FLAGe558c8b4f [2024-11-08 10:04:01,941 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac8b8f17/d915357011d843ee9451c47489f58d0f [2024-11-08 10:04:01,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:04:01,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:04:01,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:04:01,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:04:01,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:04:01,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:04:01" (1/1) ... [2024-11-08 10:04:01,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1e4b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:01, skipping insertion in model container [2024-11-08 10:04:01,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:04:01" (1/1) ... [2024-11-08 10:04:01,981 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:04:02,173 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c[414,427] [2024-11-08 10:04:02,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:04:02,200 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:04:02,209 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c[414,427] [2024-11-08 10:04:02,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:04:02,238 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:04:02,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02 WrapperNode [2024-11-08 10:04:02,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:04:02,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:04:02,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:04:02,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:04:02,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,270 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2024-11-08 10:04:02,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:04:02,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:04:02,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:04:02,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:04:02,279 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,281 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,291 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]. [2024-11-08 10:04:02,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:04:02,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:04:02,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:04:02,303 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:04:02,303 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (1/1) ... [2024-11-08 10:04:02,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:04:02,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:04:02,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 10:04:02,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 10:04:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:04:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:04:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:04:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 10:04:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 10:04:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 10:04:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 10:04:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 10:04:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:04:02,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:04:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 10:04:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 10:04:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 10:04:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 10:04:02,459 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:04:02,464 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:04:02,613 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-08 10:04:02,613 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:04:02,622 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:04:02,622 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-08 10:04:02,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:04:02 BoogieIcfgContainer [2024-11-08 10:04:02,622 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:04:02,624 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:04:02,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:04:02,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:04:02,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:04:01" (1/3) ... [2024-11-08 10:04:02,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c660ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:04:02, skipping insertion in model container [2024-11-08 10:04:02,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:04:02" (2/3) ... [2024-11-08 10:04:02,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c660ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:04:02, skipping insertion in model container [2024-11-08 10:04:02,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:04:02" (3/3) ... [2024-11-08 10:04:02,629 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-3-u.c [2024-11-08 10:04:02,640 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:04:02,641 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:04:02,686 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:04:02,692 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;@67c18eec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:04:02,692 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:04:02,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:02,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 10:04:02,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:02,700 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:04:02,700 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:02,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:02,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1247519481, now seen corresponding path program 1 times [2024-11-08 10:04:02,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:02,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388005703] [2024-11-08 10:04:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:02,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:04:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388005703] [2024-11-08 10:04:02,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388005703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:04:02,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:04:02,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:04:02,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454150439] [2024-11-08 10:04:02,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:04:02,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 10:04:02,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:02,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 10:04:02,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:04:02,893 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:02,909 INFO L93 Difference]: Finished difference Result 67 states and 116 transitions. [2024-11-08 10:04:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 10:04:02,911 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 10:04:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:02,916 INFO L225 Difference]: With dead ends: 67 [2024-11-08 10:04:02,917 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 10:04:02,920 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 [2024-11-08 10:04:02,923 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:02,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:04:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 10:04:02,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-08 10:04:02,953 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) [2024-11-08 10:04:02,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2024-11-08 10:04:02,955 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 15 [2024-11-08 10:04:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:02,956 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2024-11-08 10:04:02,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2024-11-08 10:04:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 10:04:02,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:02,958 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:04:02,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:04:02,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:02,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash -5605811, now seen corresponding path program 1 times [2024-11-08 10:04:02,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:02,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91985947] [2024-11-08 10:04:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:02,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:04:03,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:03,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91985947] [2024-11-08 10:04:03,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91985947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:04:03,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:04:03,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:04:03,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455804357] [2024-11-08 10:04:03,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:04:03,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:04:03,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:03,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:04:03,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:03,188 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:03,285 INFO L93 Difference]: Finished difference Result 72 states and 99 transitions. [2024-11-08 10:04:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:04:03,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 10:04:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:03,286 INFO L225 Difference]: With dead ends: 72 [2024-11-08 10:04:03,289 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 10:04:03,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:03,290 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 62 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:03,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 33 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:04:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 10:04:03,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 32. [2024-11-08 10:04:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:03,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2024-11-08 10:04:03,300 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 15 [2024-11-08 10:04:03,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:03,300 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2024-11-08 10:04:03,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:03,301 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2024-11-08 10:04:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 10:04:03,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:03,304 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:04:03,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 10:04:03,305 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:03,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:03,305 INFO L85 PathProgramCache]: Analyzing trace with hash -785961326, now seen corresponding path program 1 times [2024-11-08 10:04:03,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:03,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905311195] [2024-11-08 10:04:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:03,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:04:03,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:03,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905311195] [2024-11-08 10:04:03,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905311195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:04:03,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:04:03,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:04:03,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625701834] [2024-11-08 10:04:03,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:04:03,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:04:03,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:03,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:04:03,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:03,385 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:03,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:03,454 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2024-11-08 10:04:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:04:03,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2024-11-08 10:04:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:03,455 INFO L225 Difference]: With dead ends: 72 [2024-11-08 10:04:03,455 INFO L226 Difference]: Without dead ends: 45 [2024-11-08 10:04:03,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:03,456 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:03,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 35 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:04:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-08 10:04:03,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2024-11-08 10:04:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 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) [2024-11-08 10:04:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-08 10:04:03,461 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 18 [2024-11-08 10:04:03,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:03,461 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-08 10:04:03,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-08 10:04:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 10:04:03,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:03,465 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] [2024-11-08 10:04:03,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 10:04:03,466 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:03,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:03,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1148207861, now seen corresponding path program 1 times [2024-11-08 10:04:03,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:03,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754808308] [2024-11-08 10:04:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:03,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:04:03,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:03,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754808308] [2024-11-08 10:04:03,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754808308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:04:03,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:04:03,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:04:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606513344] [2024-11-08 10:04:03,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:04:03,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:04:03,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:03,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:04:03,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:03,566 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-11-08 10:04:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:03,605 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2024-11-08 10:04:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:04:03,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 [2024-11-08 10:04:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:03,606 INFO L225 Difference]: With dead ends: 70 [2024-11-08 10:04:03,607 INFO L226 Difference]: Without dead ends: 41 [2024-11-08 10:04:03,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:03,608 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:03,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 43 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:04:03,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-08 10:04:03,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2024-11-08 10:04:03,616 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) [2024-11-08 10:04:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-08 10:04:03,617 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 21 [2024-11-08 10:04:03,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:03,617 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-08 10:04:03,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-11-08 10:04:03,617 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-08 10:04:03,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 10:04:03,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:03,618 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] [2024-11-08 10:04:03,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 10:04:03,618 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:03,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1730545667, now seen corresponding path program 1 times [2024-11-08 10:04:03,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:03,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111522415] [2024-11-08 10:04:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:03,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 10:04:03,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111522415] [2024-11-08 10:04:03,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111522415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:04:03,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:04:03,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:04:03,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883728836] [2024-11-08 10:04:03,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:04:03,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:04:03,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:04:03,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:03,713 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:03,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:03,796 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2024-11-08 10:04:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:04:03,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-08 10:04:03,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:03,797 INFO L225 Difference]: With dead ends: 76 [2024-11-08 10:04:03,798 INFO L226 Difference]: Without dead ends: 58 [2024-11-08 10:04:03,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:03,799 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 52 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:03,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 45 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:04:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-08 10:04:03,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 37. [2024-11-08 10:04:03,807 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) [2024-11-08 10:04:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2024-11-08 10:04:03,809 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 22 [2024-11-08 10:04:03,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:03,809 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2024-11-08 10:04:03,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:03,809 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2024-11-08 10:04:03,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 10:04:03,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:03,810 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] [2024-11-08 10:04:03,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 10:04:03,810 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:03,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:03,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1794892619, now seen corresponding path program 1 times [2024-11-08 10:04:03,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:03,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165861070] [2024-11-08 10:04:03,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:03,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 10:04:03,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:03,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165861070] [2024-11-08 10:04:03,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165861070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:04:03,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:04:03,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:04:03,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459761984] [2024-11-08 10:04:03,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:04:03,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:04:03,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:03,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:04:03,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:03,891 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:03,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:03,939 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2024-11-08 10:04:03,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:04:03,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-11-08 10:04:03,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:03,940 INFO L225 Difference]: With dead ends: 73 [2024-11-08 10:04:03,942 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 10:04:03,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:03,943 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:03,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 45 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:04:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 10:04:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2024-11-08 10:04:03,950 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) [2024-11-08 10:04:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2024-11-08 10:04:03,950 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 25 [2024-11-08 10:04:03,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:03,951 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2024-11-08 10:04:03,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2024-11-08 10:04:03,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 10:04:03,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:03,952 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] [2024-11-08 10:04:03,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 10:04:03,952 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:03,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1471150881, now seen corresponding path program 1 times [2024-11-08 10:04:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:03,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131316617] [2024-11-08 10:04:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 10:04:04,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:04,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131316617] [2024-11-08 10:04:04,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131316617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:04:04,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:04:04,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:04:04,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730616735] [2024-11-08 10:04:04,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:04:04,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:04:04,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:04,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:04:04,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:04,019 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), 4 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) [2024-11-08 10:04:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:04,050 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2024-11-08 10:04:04,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:04:04,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 [2024-11-08 10:04:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:04,051 INFO L225 Difference]: With dead ends: 67 [2024-11-08 10:04:04,051 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 10:04:04,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:04,052 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:04,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 54 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:04:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 10:04:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-11-08 10:04:04,057 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) [2024-11-08 10:04:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2024-11-08 10:04:04,057 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 28 [2024-11-08 10:04:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:04,058 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2024-11-08 10:04:04,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2024-11-08 10:04:04,058 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2024-11-08 10:04:04,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 10:04:04,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:04,059 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] [2024-11-08 10:04:04,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 10:04:04,059 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:04,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:04,059 INFO L85 PathProgramCache]: Analyzing trace with hash -585856218, now seen corresponding path program 1 times [2024-11-08 10:04:04,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:04,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27050691] [2024-11-08 10:04:04,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:04:04,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:04,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27050691] [2024-11-08 10:04:04,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27050691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:04:04,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:04:04,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:04:04,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520158448] [2024-11-08 10:04:04,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:04:04,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:04:04,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:04,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:04:04,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:04,148 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:04,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:04,204 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2024-11-08 10:04:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:04:04,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-08 10:04:04,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:04,205 INFO L225 Difference]: With dead ends: 56 [2024-11-08 10:04:04,205 INFO L226 Difference]: Without dead ends: 44 [2024-11-08 10:04:04,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:04:04,206 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 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 [2024-11-08 10:04:04,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 26 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:04:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-08 10:04:04,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2024-11-08 10:04:04,213 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) [2024-11-08 10:04:04,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-11-08 10:04:04,214 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 29 [2024-11-08 10:04:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:04,214 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-11-08 10:04:04,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-11-08 10:04:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-08 10:04:04,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:04,215 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:04:04,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 10:04:04,215 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:04,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:04,216 INFO L85 PathProgramCache]: Analyzing trace with hash 628365451, now seen corresponding path program 1 times [2024-11-08 10:04:04,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:04,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824037185] [2024-11-08 10:04:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:04,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:04:04,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:04,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824037185] [2024-11-08 10:04:04,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824037185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:04:04,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:04:04,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:04:04,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333329242] [2024-11-08 10:04:04,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:04:04,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:04:04,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:04,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:04:04,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:04,262 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:04,311 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2024-11-08 10:04:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:04:04,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-08 10:04:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:04,312 INFO L225 Difference]: With dead ends: 60 [2024-11-08 10:04:04,312 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 10:04:04,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:04:04,312 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:04,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 30 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:04:04,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 10:04:04,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-11-08 10:04:04,318 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) [2024-11-08 10:04:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2024-11-08 10:04:04,319 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 32 [2024-11-08 10:04:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:04,319 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2024-11-08 10:04:04,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2024-11-08 10:04:04,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 10:04:04,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:04,320 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] [2024-11-08 10:04:04,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 10:04:04,320 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:04,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:04,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1983947548, now seen corresponding path program 1 times [2024-11-08 10:04:04,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:04,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939243023] [2024-11-08 10:04:04,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:04,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:04:04,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:04,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939243023] [2024-11-08 10:04:04,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939243023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:04:04,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:04:04,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:04:04,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120690165] [2024-11-08 10:04:04,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:04:04,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:04:04,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:04,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:04:04,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:04:04,377 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:04,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:04,422 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2024-11-08 10:04:04,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:04:04,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-08 10:04:04,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:04,423 INFO L225 Difference]: With dead ends: 60 [2024-11-08 10:04:04,423 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 10:04:04,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:04:04,424 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:04,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 35 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:04:04,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 10:04:04,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-08 10:04:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2024-11-08 10:04:04,434 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 35 [2024-11-08 10:04:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:04,435 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2024-11-08 10:04:04,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:04,435 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2024-11-08 10:04:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 10:04:04,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:04,439 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:04:04,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 10:04:04,440 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:04,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1063758460, now seen corresponding path program 1 times [2024-11-08 10:04:04,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:04,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934803028] [2024-11-08 10:04:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:04,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:04:04,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:04,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934803028] [2024-11-08 10:04:04,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934803028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:04:04,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074007025] [2024-11-08 10:04:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:04,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:04:04,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:04:04,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:04:04,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:04:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:04,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:04:04,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:04:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:04:04,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:04:04,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:04:04,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074007025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:04:04,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:04:04,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 10:04:04,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787433748] [2024-11-08 10:04:04,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:04:04,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 10:04:04,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:04,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 10:04:04,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:04:04,698 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 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) [2024-11-08 10:04:04,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:04,786 INFO L93 Difference]: Finished difference Result 100 states and 131 transitions. [2024-11-08 10:04:04,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 10:04:04,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 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) Word has length 36 [2024-11-08 10:04:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:04,788 INFO L225 Difference]: With dead ends: 100 [2024-11-08 10:04:04,788 INFO L226 Difference]: Without dead ends: 63 [2024-11-08 10:04:04,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:04:04,789 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 86 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:04,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 73 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:04:04,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-08 10:04:04,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-11-08 10:04:04,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 53 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) [2024-11-08 10:04:04,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2024-11-08 10:04:04,796 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 36 [2024-11-08 10:04:04,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:04,797 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2024-11-08 10:04:04,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 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) [2024-11-08 10:04:04,797 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2024-11-08 10:04:04,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 10:04:04,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:04,798 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, 1] [2024-11-08 10:04:04,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 10:04:05,002 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 [2024-11-08 10:04:05,003 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:05,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:05,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1364299900, now seen corresponding path program 2 times [2024-11-08 10:04:05,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:05,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021553973] [2024-11-08 10:04:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:05,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:04:05,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:05,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021553973] [2024-11-08 10:04:05,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021553973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:04:05,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119465531] [2024-11-08 10:04:05,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:04:05,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:04:05,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:04:05,120 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:04:05,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:04:05,190 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:04:05,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:04:05,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 10:04:05,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:04:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:04:05,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:04:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:04:05,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119465531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:04:05,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:04:05,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-08 10:04:05,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153509934] [2024-11-08 10:04:05,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:04:05,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 10:04:05,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:05,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 10:04:05,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-08 10:04:05,322 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:05,493 INFO L93 Difference]: Finished difference Result 154 states and 200 transitions. [2024-11-08 10:04:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 10:04:05,493 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 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 39 [2024-11-08 10:04:05,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:05,494 INFO L225 Difference]: With dead ends: 154 [2024-11-08 10:04:05,494 INFO L226 Difference]: Without dead ends: 105 [2024-11-08 10:04:05,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-08 10:04:05,495 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 246 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:05,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 124 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:04:05,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-08 10:04:05,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 78. [2024-11-08 10:04:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 77 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2024-11-08 10:04:05,504 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 39 [2024-11-08 10:04:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:05,504 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2024-11-08 10:04:05,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2024-11-08 10:04:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 10:04:05,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:05,505 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, 1] [2024-11-08 10:04:05,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 10:04:05,709 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 [2024-11-08 10:04:05,710 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:05,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1086983300, now seen corresponding path program 3 times [2024-11-08 10:04:05,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:05,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480246368] [2024-11-08 10:04:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:05,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:05,910 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:04:05,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:05,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480246368] [2024-11-08 10:04:05,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480246368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:04:05,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729117308] [2024-11-08 10:04:05,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:04:05,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:04:05,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:04:05,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:04:05,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:04:05,974 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 10:04:05,974 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:04:05,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:04:05,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:04:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 10:04:06,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:04:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 10:04:06,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729117308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:04:06,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:04:06,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2024-11-08 10:04:06,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883936233] [2024-11-08 10:04:06,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:04:06,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 10:04:06,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:06,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 10:04:06,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-11-08 10:04:06,091 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:07,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:07,293 INFO L93 Difference]: Finished difference Result 503 states and 618 transitions. [2024-11-08 10:04:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-08 10:04:07,294 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 0 states have call successors, (0), 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 45 [2024-11-08 10:04:07,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:07,295 INFO L225 Difference]: With dead ends: 503 [2024-11-08 10:04:07,295 INFO L226 Difference]: Without dead ends: 430 [2024-11-08 10:04:07,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1772, Invalid=3778, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 10:04:07,297 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1977 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:07,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 116 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:04:07,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-08 10:04:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 133. [2024-11-08 10:04:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.2121212121212122) internal successors, (160), 132 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:07,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2024-11-08 10:04:07,321 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 45 [2024-11-08 10:04:07,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:07,321 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2024-11-08 10:04:07,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:07,321 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2024-11-08 10:04:07,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 10:04:07,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:07,322 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, 1] [2024-11-08 10:04:07,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 10:04:07,526 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 [2024-11-08 10:04:07,527 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:07,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:07,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1725367494, now seen corresponding path program 4 times [2024-11-08 10:04:07,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:07,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486423270] [2024-11-08 10:04:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:07,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 443 proven. 66 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2024-11-08 10:04:08,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:08,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486423270] [2024-11-08 10:04:08,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486423270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:04:08,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150867213] [2024-11-08 10:04:08,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:04:08,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:04:08,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:04:08,067 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:04:08,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:04:08,161 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:04:08,161 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:04:08,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:04:08,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:04:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 457 proven. 1 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-11-08 10:04:08,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:04:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 456 proven. 2 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-11-08 10:04:08,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150867213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:04:08,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:04:08,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 24 [2024-11-08 10:04:08,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571750929] [2024-11-08 10:04:08,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:04:08,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 10:04:08,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:08,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 10:04:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2024-11-08 10:04:08,404 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:09,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:09,352 INFO L93 Difference]: Finished difference Result 582 states and 692 transitions. [2024-11-08 10:04:09,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 10:04:09,352 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 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 97 [2024-11-08 10:04:09,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:09,354 INFO L225 Difference]: With dead ends: 582 [2024-11-08 10:04:09,354 INFO L226 Difference]: Without dead ends: 455 [2024-11-08 10:04:09,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1101, Invalid=2805, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 10:04:09,355 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1389 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:09,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 92 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:04:09,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-08 10:04:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 239. [2024-11-08 10:04:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.1932773109243697) internal successors, (284), 238 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 284 transitions. [2024-11-08 10:04:09,381 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 284 transitions. Word has length 97 [2024-11-08 10:04:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:09,381 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 284 transitions. [2024-11-08 10:04:09,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 284 transitions. [2024-11-08 10:04:09,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 10:04:09,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:09,383 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, 1] [2024-11-08 10:04:09,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 10:04:09,586 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 [2024-11-08 10:04:09,586 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:09,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:09,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1168971642, now seen corresponding path program 5 times [2024-11-08 10:04:09,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:09,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65890716] [2024-11-08 10:04:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:09,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5472 backedges. 1198 proven. 78 refuted. 0 times theorem prover too weak. 4196 trivial. 0 not checked. [2024-11-08 10:04:10,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:10,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65890716] [2024-11-08 10:04:10,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65890716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:04:10,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031643677] [2024-11-08 10:04:10,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:04:10,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:04:10,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:04:10,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:04:10,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:04:17,525 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-08 10:04:17,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:04:17,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 10:04:17,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:04:17,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5472 backedges. 3520 proven. 185 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2024-11-08 10:04:17,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:04:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5472 backedges. 3520 proven. 185 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2024-11-08 10:04:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031643677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:04:18,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:04:18,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 48 [2024-11-08 10:04:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050818516] [2024-11-08 10:04:18,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:04:18,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 10:04:18,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:18,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 10:04:18,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1767, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 10:04:18,120 INFO L87 Difference]: Start difference. First operand 239 states and 284 transitions. Second operand has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 48 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:22,207 INFO L93 Difference]: Finished difference Result 1334 states and 1594 transitions. [2024-11-08 10:04:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-08 10:04:22,208 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 48 states have internal predecessors, (103), 0 states have call successors, (0), 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 161 [2024-11-08 10:04:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:22,211 INFO L225 Difference]: With dead ends: 1334 [2024-11-08 10:04:22,211 INFO L226 Difference]: Without dead ends: 1114 [2024-11-08 10:04:22,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9024 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=6000, Invalid=20082, Unknown=0, NotChecked=0, Total=26082 [2024-11-08 10:04:22,215 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 4401 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:22,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4401 Valid, 422 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 10:04:22,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-11-08 10:04:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 783. [2024-11-08 10:04:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 1.1764705882352942) internal successors, (920), 782 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 920 transitions. [2024-11-08 10:04:22,301 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 920 transitions. Word has length 161 [2024-11-08 10:04:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:22,301 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 920 transitions. [2024-11-08 10:04:22,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 48 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:22,302 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 920 transitions. [2024-11-08 10:04:22,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2024-11-08 10:04:22,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:22,305 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, 1] [2024-11-08 10:04:22,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 10:04:22,509 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 [2024-11-08 10:04:22,510 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:22,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:22,511 INFO L85 PathProgramCache]: Analyzing trace with hash 117695558, now seen corresponding path program 6 times [2024-11-08 10:04:22,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:22,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097125912] [2024-11-08 10:04:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:22,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 77532 backedges. 5327 proven. 91 refuted. 0 times theorem prover too weak. 72114 trivial. 0 not checked. [2024-11-08 10:04:24,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:24,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097125912] [2024-11-08 10:04:24,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097125912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:04:24,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508311212] [2024-11-08 10:04:24,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:04:24,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:04:24,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:04:24,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:04:24,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:04:24,772 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-08 10:04:24,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:04:24,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 10:04:24,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:04:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 77532 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 77531 trivial. 0 not checked. [2024-11-08 10:04:25,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:04:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 77532 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 77531 trivial. 0 not checked. [2024-11-08 10:04:26,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508311212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:04:26,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:04:26,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 23 [2024-11-08 10:04:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271469785] [2024-11-08 10:04:26,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:04:26,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 10:04:26,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:26,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 10:04:26,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:04:26,379 INFO L87 Difference]: Start difference. First operand 783 states and 920 transitions. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:27,932 INFO L93 Difference]: Finished difference Result 2758 states and 3403 transitions. [2024-11-08 10:04:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-08 10:04:27,932 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 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 489 [2024-11-08 10:04:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:27,938 INFO L225 Difference]: With dead ends: 2758 [2024-11-08 10:04:27,938 INFO L226 Difference]: Without dead ends: 1995 [2024-11-08 10:04:27,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1053 GetRequests, 972 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2155, Invalid=4651, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 10:04:27,941 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1821 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:27,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1821 Valid, 108 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:04:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2024-11-08 10:04:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 853. [2024-11-08 10:04:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 1.1772300469483568) internal successors, (1003), 852 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:28,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1003 transitions. [2024-11-08 10:04:28,135 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1003 transitions. Word has length 489 [2024-11-08 10:04:28,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:28,136 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1003 transitions. [2024-11-08 10:04:28,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:28,136 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1003 transitions. [2024-11-08 10:04:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-08 10:04:28,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:28,141 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, 1] [2024-11-08 10:04:28,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 10:04:28,341 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 [2024-11-08 10:04:28,342 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:28,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1596085156, now seen corresponding path program 7 times [2024-11-08 10:04:28,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:28,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006033164] [2024-11-08 10:04:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:28,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 88961 backedges. 6110 proven. 105 refuted. 0 times theorem prover too weak. 82746 trivial. 0 not checked. [2024-11-08 10:04:29,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006033164] [2024-11-08 10:04:29,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006033164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:04:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355169832] [2024-11-08 10:04:29,872 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:04:29,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:04:29,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:04:29,896 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:04:29,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:04:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:30,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 3920 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 10:04:30,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:04:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 88961 backedges. 6110 proven. 105 refuted. 0 times theorem prover too weak. 82746 trivial. 0 not checked. [2024-11-08 10:04:30,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:04:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 88961 backedges. 6110 proven. 105 refuted. 0 times theorem prover too weak. 82746 trivial. 0 not checked. [2024-11-08 10:04:31,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355169832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:04:31,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:04:31,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2024-11-08 10:04:31,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716580753] [2024-11-08 10:04:31,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:04:31,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 10:04:31,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:31,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 10:04:31,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=1325, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 10:04:31,205 INFO L87 Difference]: Start difference. First operand 853 states and 1003 transitions. Second operand has 49 states, 49 states have (on average 1.816326530612245) internal successors, (89), 49 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:32,157 INFO L93 Difference]: Finished difference Result 2556 states and 3527 transitions. [2024-11-08 10:04:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 10:04:32,162 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.816326530612245) internal successors, (89), 49 states have internal predecessors, (89), 0 states have call successors, (0), 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 538 [2024-11-08 10:04:32,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:32,172 INFO L225 Difference]: With dead ends: 2556 [2024-11-08 10:04:32,172 INFO L226 Difference]: Without dead ends: 1724 [2024-11-08 10:04:32,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1107 GetRequests, 1045 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1552, Invalid=2480, Unknown=0, NotChecked=0, Total=4032 [2024-11-08 10:04:32,174 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 922 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:32,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 195 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:04:32,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2024-11-08 10:04:32,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1637. [2024-11-08 10:04:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1636 states have (on average 1.1607579462102688) internal successors, (1899), 1636 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:32,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 1899 transitions. [2024-11-08 10:04:32,456 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 1899 transitions. Word has length 538 [2024-11-08 10:04:32,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:32,456 INFO L471 AbstractCegarLoop]: Abstraction has 1637 states and 1899 transitions. [2024-11-08 10:04:32,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.816326530612245) internal successors, (89), 49 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:32,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 1899 transitions. [2024-11-08 10:04:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2024-11-08 10:04:32,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:32,471 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, 1] [2024-11-08 10:04:32,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 10:04:32,675 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 [2024-11-08 10:04:32,676 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:32,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:32,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1100587940, now seen corresponding path program 8 times [2024-11-08 10:04:32,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:32,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134166790] [2024-11-08 10:04:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:32,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:04:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 377249 backedges. 25982 proven. 465 refuted. 0 times theorem prover too weak. 350802 trivial. 0 not checked. [2024-11-08 10:04:37,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:04:37,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134166790] [2024-11-08 10:04:37,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134166790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:04:37,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617941681] [2024-11-08 10:04:37,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:04:37,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:04:37,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:04:37,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:04:37,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:04:39,356 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:04:39,357 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:04:39,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 7952 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 10:04:39,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:04:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 377249 backedges. 25982 proven. 465 refuted. 0 times theorem prover too weak. 350802 trivial. 0 not checked. [2024-11-08 10:04:40,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:04:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 377249 backedges. 25982 proven. 465 refuted. 0 times theorem prover too weak. 350802 trivial. 0 not checked. [2024-11-08 10:04:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617941681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:04:41,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:04:41,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 97 [2024-11-08 10:04:41,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382593205] [2024-11-08 10:04:41,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:04:41,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-08 10:04:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:04:41,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-08 10:04:41,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=5213, Unknown=0, NotChecked=0, Total=9312 [2024-11-08 10:04:41,184 INFO L87 Difference]: Start difference. First operand 1637 states and 1899 transitions. Second operand has 97 states, 97 states have (on average 1.4123711340206186) internal successors, (137), 97 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:43,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:04:43,788 INFO L93 Difference]: Finished difference Result 4988 states and 6855 transitions. [2024-11-08 10:04:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-08 10:04:43,789 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.4123711340206186) internal successors, (137), 97 states have internal predecessors, (137), 0 states have call successors, (0), 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 986 [2024-11-08 10:04:43,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:04:43,801 INFO L225 Difference]: With dead ends: 4988 [2024-11-08 10:04:43,801 INFO L226 Difference]: Without dead ends: 3388 [2024-11-08 10:04:43,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2035 GetRequests, 1909 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5825 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6176, Invalid=10080, Unknown=0, NotChecked=0, Total=16256 [2024-11-08 10:04:43,805 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1241 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:04:43,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 394 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:04:43,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2024-11-08 10:04:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3205. [2024-11-08 10:04:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3205 states, 3204 states have (on average 1.1519975031210987) internal successors, (3691), 3204 states have internal predecessors, (3691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:44,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3205 states to 3205 states and 3691 transitions. [2024-11-08 10:04:44,247 INFO L78 Accepts]: Start accepts. Automaton has 3205 states and 3691 transitions. Word has length 986 [2024-11-08 10:04:44,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:04:44,248 INFO L471 AbstractCegarLoop]: Abstraction has 3205 states and 3691 transitions. [2024-11-08 10:04:44,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.4123711340206186) internal successors, (137), 97 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:04:44,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3205 states and 3691 transitions. [2024-11-08 10:04:44,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1883 [2024-11-08 10:04:44,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:04:44,301 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, 1] [2024-11-08 10:04:44,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 10:04:44,505 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 [2024-11-08 10:04:44,506 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:04:44,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:04:44,506 INFO L85 PathProgramCache]: Analyzing trace with hash 857228196, now seen corresponding path program 9 times [2024-11-08 10:04:44,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:04:44,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36772147] [2024-11-08 10:04:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:04:44,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:04:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:05:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1555937 backedges. 107198 proven. 1953 refuted. 0 times theorem prover too weak. 1446786 trivial. 0 not checked. [2024-11-08 10:05:03,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:05:03,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36772147] [2024-11-08 10:05:03,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36772147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:05:03,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048222497] [2024-11-08 10:05:03,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:05:03,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:05:03,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:05:03,139 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:05:03,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 10:05:04,801 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 10:05:04,801 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:05:04,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:05:04,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:05:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1555937 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1555936 trivial. 0 not checked. [2024-11-08 10:05:06,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:05:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1555937 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1555936 trivial. 0 not checked. [2024-11-08 10:05:08,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048222497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:05:08,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:05:08,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 5, 5] total 72 [2024-11-08 10:05:08,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75229081] [2024-11-08 10:05:08,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:05:08,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-08 10:05:08,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:05:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-08 10:05:08,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2106, Invalid=3006, Unknown=0, NotChecked=0, Total=5112 [2024-11-08 10:05:08,283 INFO L87 Difference]: Start difference. First operand 3205 states and 3691 transitions. Second operand has 72 states, 72 states have (on average 1.9583333333333333) internal successors, (141), 72 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:05:34,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:05:34,254 INFO L93 Difference]: Finished difference Result 13219 states and 16044 transitions. [2024-11-08 10:05:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2024-11-08 10:05:34,255 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.9583333333333333) internal successors, (141), 72 states have internal predecessors, (141), 0 states have call successors, (0), 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 1882 [2024-11-08 10:05:34,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:05:34,290 INFO L225 Difference]: With dead ends: 13219 [2024-11-08 10:05:34,290 INFO L226 Difference]: Without dead ends: 10083 [2024-11-08 10:05:34,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4148 GetRequests, 3758 SyntacticMatches, 0 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51360 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=45306, Invalid=107966, Unknown=0, NotChecked=0, Total=153272 [2024-11-08 10:05:34,305 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 13899 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 2129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13899 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2129 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:05:34,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13899 Valid, 281 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2129 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 10:05:34,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10083 states. [2024-11-08 10:05:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10083 to 3275. [2024-11-08 10:05:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3274 states have (on average 1.1527183872938302) internal successors, (3774), 3274 states have internal predecessors, (3774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:05:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 3774 transitions. [2024-11-08 10:05:34,791 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 3774 transitions. Word has length 1882 [2024-11-08 10:05:34,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:05:34,792 INFO L471 AbstractCegarLoop]: Abstraction has 3275 states and 3774 transitions. [2024-11-08 10:05:34,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.9583333333333333) internal successors, (141), 72 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:05:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 3774 transitions. [2024-11-08 10:05:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1932 [2024-11-08 10:05:34,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:05:34,810 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, 1] [2024-11-08 10:05:34,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 10:05:35,014 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 [2024-11-08 10:05:35,015 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:05:35,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:05:35,016 INFO L85 PathProgramCache]: Analyzing trace with hash -209818227, now seen corresponding path program 10 times [2024-11-08 10:05:35,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:05:35,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616483952] [2024-11-08 10:05:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:05:35,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:05:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat