./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sep10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/sep10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 246513a49efb434b9c960a67f526057a6e0f9037478ee43a300fa4a565ea6e54 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 15:30:28,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 15:30:28,563 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 15:30:28,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 15:30:28,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 15:30:28,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 15:30:28,604 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 15:30:28,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 15:30:28,605 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 15:30:28,605 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 15:30:28,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 15:30:28,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 15:30:28,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 15:30:28,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 15:30:28,608 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 15:30:28,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 15:30:28,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 15:30:28,609 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 15:30:28,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 15:30:28,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 15:30:28,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 15:30:28,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 15:30:28,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 15:30:28,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 15:30:28,611 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 15:30:28,611 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 15:30:28,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 15:30:28,612 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 15:30:28,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 15:30:28,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 15:30:28,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 15:30:28,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 15:30:28,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:30:28,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 15:30:28,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 15:30:28,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 15:30:28,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 15:30:28,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 15:30:28,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 15:30:28,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 15:30:28,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 15:30:28,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 15:30:28,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246513a49efb434b9c960a67f526057a6e0f9037478ee43a300fa4a565ea6e54 [2024-11-11 15:30:28,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 15:30:28,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 15:30:28,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 15:30:28,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 15:30:28,878 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 15:30:28,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep10-2.i [2024-11-11 15:30:30,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 15:30:30,482 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 15:30:30,482 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep10-2.i [2024-11-11 15:30:30,490 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99af6451c/55aed384a8ac45f6b84cd8a2273b3b99/FLAG93a0ed5c1 [2024-11-11 15:30:30,866 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99af6451c/55aed384a8ac45f6b84cd8a2273b3b99 [2024-11-11 15:30:30,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 15:30:30,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 15:30:30,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 15:30:30,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 15:30:30,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 15:30:30,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:30:30" (1/1) ... [2024-11-11 15:30:30,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ad43ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:30, skipping insertion in model container [2024-11-11 15:30:30,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:30:30" (1/1) ... [2024-11-11 15:30:30,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 15:30:31,122 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep10-2.i[1293,1306] [2024-11-11 15:30:31,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:30:31,135 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 15:30:31,160 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep10-2.i[1293,1306] [2024-11-11 15:30:31,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:30:31,182 INFO L204 MainTranslator]: Completed translation [2024-11-11 15:30:31,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31 WrapperNode [2024-11-11 15:30:31,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 15:30:31,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 15:30:31,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 15:30:31,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 15:30:31,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,229 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-11-11 15:30:31,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 15:30:31,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 15:30:31,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 15:30:31,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 15:30:31,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,245 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,267 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-11 15:30:31,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 15:30:31,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 15:30:31,292 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 15:30:31,292 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 15:30:31,293 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (1/1) ... [2024-11-11 15:30:31,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:30:31,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:30:31,338 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) [2024-11-11 15:30:31,341 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 [2024-11-11 15:30:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 15:30:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 15:30:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 15:30:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 15:30:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 15:30:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 15:30:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 15:30:31,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 15:30:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 15:30:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 15:30:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 15:30:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2024-11-11 15:30:31,392 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2024-11-11 15:30:31,466 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 15:30:31,468 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 15:30:31,649 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-11 15:30:31,650 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 15:30:31,664 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 15:30:31,664 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-11 15:30:31,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:30:31 BoogieIcfgContainer [2024-11-11 15:30:31,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 15:30:31,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 15:30:31,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 15:30:31,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 15:30:31,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:30:30" (1/3) ... [2024-11-11 15:30:31,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69459372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:30:31, skipping insertion in model container [2024-11-11 15:30:31,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:30:31" (2/3) ... [2024-11-11 15:30:31,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69459372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:30:31, skipping insertion in model container [2024-11-11 15:30:31,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:30:31" (3/3) ... [2024-11-11 15:30:31,673 INFO L112 eAbstractionObserver]: Analyzing ICFG sep10-2.i [2024-11-11 15:30:31,690 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 15:30:31,690 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 15:30:31,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 15:30:31,758 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;@eb8b6e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 15:30:31,758 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 15:30:31,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:30:31,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-11 15:30:31,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:30:31,772 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:30:31,772 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:30:31,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:30:31,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1179968903, now seen corresponding path program 1 times [2024-11-11 15:30:31,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:30:31,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280349210] [2024-11-11 15:30:31,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:31,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:30:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:32,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-11 15:30:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:32,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-11 15:30:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:32,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-11 15:30:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-11 15:30:32,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:30:32,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280349210] [2024-11-11 15:30:32,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280349210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:30:32,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:30:32,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 15:30:32,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283275780] [2024-11-11 15:30:32,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:30:32,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 15:30:32,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:30:32,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 15:30:32,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 15:30:32,283 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-11 15:30:32,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:30:32,331 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2024-11-11 15:30:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 15:30:32,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-11 15:30:32,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:30:32,340 INFO L225 Difference]: With dead ends: 54 [2024-11-11 15:30:32,340 INFO L226 Difference]: Without dead ends: 26 [2024-11-11 15:30:32,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 15:30:32,349 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:30:32,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:30:32,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-11 15:30:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-11 15:30:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:30:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-11 15:30:32,388 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 29 [2024-11-11 15:30:32,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:30:32,388 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-11 15:30:32,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-11 15:30:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-11 15:30:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-11 15:30:32,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:30:32,391 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:30:32,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 15:30:32,392 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:30:32,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:30:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash 802434324, now seen corresponding path program 1 times [2024-11-11 15:30:32,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:30:32,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457360937] [2024-11-11 15:30:32,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:32,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:30:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:32,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-11 15:30:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:32,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-11 15:30:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:32,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-11 15:30:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-11 15:30:32,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:30:32,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457360937] [2024-11-11 15:30:32,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457360937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:30:32,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368939576] [2024-11-11 15:30:32,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:32,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:32,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:30:32,571 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) [2024-11-11 15:30:32,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 15:30:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:32,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 15:30:32,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:30:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:30:32,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 15:30:32,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368939576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:30:32,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 15:30:32,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-11 15:30:32,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854427385] [2024-11-11 15:30:32,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:30:32,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 15:30:32,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:30:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 15:30:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 15:30:32,733 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-11 15:30:32,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:30:32,748 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-11-11 15:30:32,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 15:30:32,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-11 15:30:32,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:30:32,750 INFO L225 Difference]: With dead ends: 46 [2024-11-11 15:30:32,751 INFO L226 Difference]: Without dead ends: 28 [2024-11-11 15:30:32,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 15:30:32,754 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:30:32,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:30:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-11 15:30:32,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-11-11 15:30:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:30:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-11 15:30:32,762 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 31 [2024-11-11 15:30:32,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:30:32,763 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-11 15:30:32,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-11 15:30:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-11 15:30:32,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-11 15:30:32,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:30:32,765 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:30:32,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 15:30:32,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:32,966 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:30:32,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:30:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash -621262767, now seen corresponding path program 1 times [2024-11-11 15:30:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:30:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164762329] [2024-11-11 15:30:32,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:30:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:33,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-11 15:30:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:33,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:30:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:33,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-11 15:30:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 15:30:33,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:30:33,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164762329] [2024-11-11 15:30:33,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164762329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:30:33,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294772861] [2024-11-11 15:30:33,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:33,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:33,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:30:33,150 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) [2024-11-11 15:30:33,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 15:30:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:33,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 15:30:33,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:30:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 15:30:33,253 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 15:30:33,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294772861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:30:33,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 15:30:33,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-11 15:30:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494571078] [2024-11-11 15:30:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:30:33,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 15:30:33,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:30:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 15:30:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:30:33,256 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-11 15:30:33,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:30:33,274 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2024-11-11 15:30:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 15:30:33,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2024-11-11 15:30:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:30:33,279 INFO L225 Difference]: With dead ends: 42 [2024-11-11 15:30:33,279 INFO L226 Difference]: Without dead ends: 28 [2024-11-11 15:30:33,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:30:33,281 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:30:33,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:30:33,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-11 15:30:33,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-11 15:30:33,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:30:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-11 15:30:33,288 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 40 [2024-11-11 15:30:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:30:33,291 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-11 15:30:33,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-11 15:30:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-11 15:30:33,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-11 15:30:33,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:30:33,292 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:30:33,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 15:30:33,493 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,SelfDestructingSolverStorable2 [2024-11-11 15:30:33,493 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:30:33,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:30:33,494 INFO L85 PathProgramCache]: Analyzing trace with hash -862308077, now seen corresponding path program 1 times [2024-11-11 15:30:33,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:30:33,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871456760] [2024-11-11 15:30:33,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:33,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:30:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:33,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-11 15:30:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:33,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:30:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:33,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-11 15:30:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-11 15:30:33,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:30:33,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871456760] [2024-11-11 15:30:33,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871456760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:30:33,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498724098] [2024-11-11 15:30:33,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:33,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:33,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:30:33,660 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) [2024-11-11 15:30:33,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 15:30:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:33,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 15:30:33,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:30:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-11 15:30:33,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:30:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-11 15:30:33,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498724098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:30:33,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:30:33,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-11 15:30:33,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725127676] [2024-11-11 15:30:33,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:30:33,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 15:30:33,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:30:33,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 15:30:33,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-11 15:30:33,859 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:30:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:30:33,902 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2024-11-11 15:30:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 15:30:33,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2024-11-11 15:30:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:30:33,905 INFO L225 Difference]: With dead ends: 60 [2024-11-11 15:30:33,906 INFO L226 Difference]: Without dead ends: 38 [2024-11-11 15:30:33,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-11 15:30:33,908 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:30:33,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 93 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:30:33,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-11 15:30:33,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-11 15:30:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:30:33,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-11 15:30:33,918 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 42 [2024-11-11 15:30:33,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:30:33,918 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-11 15:30:33,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-11 15:30:33,919 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-11 15:30:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-11 15:30:33,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:30:33,922 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:30:33,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 15:30:34,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:34,123 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:30:34,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:30:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1359434988, now seen corresponding path program 2 times [2024-11-11 15:30:34,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:30:34,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397580780] [2024-11-11 15:30:34,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:34,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:30:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:34,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-11 15:30:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:34,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-11 15:30:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:34,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-11 15:30:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-11 15:30:34,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:30:34,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397580780] [2024-11-11 15:30:34,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397580780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:30:34,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565925270] [2024-11-11 15:30:34,239 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:30:34,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:30:34,241 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) [2024-11-11 15:30:34,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 15:30:34,333 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:30:34,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:30:34,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:30:34,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:30:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-11 15:30:34,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:30:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-11 15:30:34,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565925270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:30:34,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:30:34,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-11 15:30:34,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354955504] [2024-11-11 15:30:34,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:30:34,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:30:34,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:30:34,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:30:34,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:30:34,495 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-11 15:30:34,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:30:34,558 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2024-11-11 15:30:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-11 15:30:34,562 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2024-11-11 15:30:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:30:34,563 INFO L225 Difference]: With dead ends: 76 [2024-11-11 15:30:34,563 INFO L226 Difference]: Without dead ends: 51 [2024-11-11 15:30:34,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:30:34,565 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:30:34,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 89 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:30:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-11 15:30:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-11-11 15:30:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:30:34,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2024-11-11 15:30:34,577 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 57 [2024-11-11 15:30:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:30:34,577 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2024-11-11 15:30:34,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-11 15:30:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-11-11 15:30:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-11 15:30:34,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:30:34,578 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:30:34,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 15:30:34,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:34,785 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:30:34,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:30:34,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1790168738, now seen corresponding path program 3 times [2024-11-11 15:30:34,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:30:34,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119365021] [2024-11-11 15:30:34,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:34,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:30:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:34,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 15:30:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:34,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-11 15:30:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:34,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-11 15:30:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-11 15:30:34,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:30:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119365021] [2024-11-11 15:30:34,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119365021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:30:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090560580] [2024-11-11 15:30:34,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:30:34,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:34,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:30:34,990 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) [2024-11-11 15:30:34,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 15:30:35,073 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-11 15:30:35,074 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:30:35,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 15:30:35,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:30:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-11 15:30:35,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:30:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-11 15:30:35,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090560580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:30:35,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:30:35,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-11 15:30:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367598160] [2024-11-11 15:30:35,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:30:35,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 15:30:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:30:35,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 15:30:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-11 15:30:35,141 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-11 15:30:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:30:35,166 INFO L93 Difference]: Finished difference Result 87 states and 108 transitions. [2024-11-11 15:30:35,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 15:30:35,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2024-11-11 15:30:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:30:35,168 INFO L225 Difference]: With dead ends: 87 [2024-11-11 15:30:35,169 INFO L226 Difference]: Without dead ends: 62 [2024-11-11 15:30:35,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-11 15:30:35,170 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:30:35,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 81 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:30:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-11 15:30:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-11 15:30:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:30:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2024-11-11 15:30:35,178 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 71 [2024-11-11 15:30:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:30:35,178 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2024-11-11 15:30:35,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-11 15:30:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2024-11-11 15:30:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-11 15:30:35,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:30:35,185 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:30:35,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 15:30:35,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:35,386 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:30:35,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:30:35,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2048016994, now seen corresponding path program 4 times [2024-11-11 15:30:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:30:35,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294610638] [2024-11-11 15:30:35,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:35,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:30:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:35,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 15:30:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:35,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-11 15:30:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:35,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-11 15:30:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-11 15:30:35,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:30:35,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294610638] [2024-11-11 15:30:35,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294610638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:30:35,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225183017] [2024-11-11 15:30:35,769 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:30:35,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:35,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:30:35,773 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) [2024-11-11 15:30:35,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 15:30:35,910 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:30:35,911 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:30:35,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-11 15:30:35,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:30:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-11 15:30:35,953 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:30:36,072 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-11 15:30:36,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225183017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:30:36,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:30:36,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-11 15:30:36,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874311482] [2024-11-11 15:30:36,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:30:36,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-11 15:30:36,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:30:36,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-11 15:30:36,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-11 15:30:36,075 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-11 15:30:36,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:30:36,125 INFO L93 Difference]: Finished difference Result 111 states and 140 transitions. [2024-11-11 15:30:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 15:30:36,126 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 107 [2024-11-11 15:30:36,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:30:36,127 INFO L225 Difference]: With dead ends: 111 [2024-11-11 15:30:36,127 INFO L226 Difference]: Without dead ends: 74 [2024-11-11 15:30:36,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 213 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-11 15:30:36,128 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 29 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:30:36,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 67 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:30:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-11 15:30:36,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-11 15:30:36,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 69 states have internal predecessors, (82), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:30:36,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2024-11-11 15:30:36,144 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 107 [2024-11-11 15:30:36,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:30:36,144 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2024-11-11 15:30:36,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-11 15:30:36,146 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2024-11-11 15:30:36,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-11 15:30:36,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:30:36,150 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:30:36,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-11 15:30:36,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:36,351 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:30:36,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:30:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash 857418206, now seen corresponding path program 5 times [2024-11-11 15:30:36,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:30:36,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500180405] [2024-11-11 15:30:36,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:36,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:30:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:36,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 15:30:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:36,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-11 15:30:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:36,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-11 15:30:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2024-11-11 15:30:36,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:30:36,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500180405] [2024-11-11 15:30:36,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500180405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:30:36,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428472089] [2024-11-11 15:30:36,683 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:30:36,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:36,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:30:36,685 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) [2024-11-11 15:30:36,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 15:30:36,996 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-11-11 15:30:36,997 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:30:37,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 15:30:37,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:30:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 650 proven. 4 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2024-11-11 15:30:37,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:30:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2024-11-11 15:30:37,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428472089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:30:37,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:30:37,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-11 15:30:37,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486877765] [2024-11-11 15:30:37,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:30:37,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 15:30:37,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:30:37,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 15:30:37,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-11 15:30:37,068 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 15:30:37,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:30:37,100 INFO L93 Difference]: Finished difference Result 123 states and 151 transitions. [2024-11-11 15:30:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 15:30:37,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 143 [2024-11-11 15:30:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:30:37,102 INFO L225 Difference]: With dead ends: 123 [2024-11-11 15:30:37,102 INFO L226 Difference]: Without dead ends: 82 [2024-11-11 15:30:37,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-11 15:30:37,103 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:30:37,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 96 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:30:37,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-11 15:30:37,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-11 15:30:37,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 77 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:30:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2024-11-11 15:30:37,115 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 96 transitions. Word has length 143 [2024-11-11 15:30:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:30:37,116 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 96 transitions. [2024-11-11 15:30:37,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 15:30:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 96 transitions. [2024-11-11 15:30:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-11 15:30:37,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:30:37,123 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:30:37,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-11 15:30:37,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:37,324 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:30:37,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:30:37,325 INFO L85 PathProgramCache]: Analyzing trace with hash -316732202, now seen corresponding path program 6 times [2024-11-11 15:30:37,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:30:37,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068956638] [2024-11-11 15:30:37,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:37,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:30:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:37,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 15:30:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:37,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-11 15:30:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:37,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-11-11 15:30:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2024-11-11 15:30:37,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:30:37,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068956638] [2024-11-11 15:30:37,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068956638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:30:37,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102930032] [2024-11-11 15:30:37,713 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:30:37,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:37,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:30:37,715 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) [2024-11-11 15:30:37,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-11 15:30:37,980 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-11 15:30:37,980 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:30:37,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-11 15:30:37,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:30:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 650 proven. 36 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2024-11-11 15:30:38,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:30:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2024-11-11 15:30:38,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102930032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:30:38,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:30:38,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-11 15:30:38,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121920709] [2024-11-11 15:30:38,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:30:38,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-11 15:30:38,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:30:38,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-11 15:30:38,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-11 15:30:38,129 INFO L87 Difference]: Start difference. First operand 82 states and 96 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 15:30:38,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:30:38,164 INFO L93 Difference]: Finished difference Result 129 states and 156 transitions. [2024-11-11 15:30:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-11 15:30:38,165 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 151 [2024-11-11 15:30:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:30:38,166 INFO L225 Difference]: With dead ends: 129 [2024-11-11 15:30:38,166 INFO L226 Difference]: Without dead ends: 88 [2024-11-11 15:30:38,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 300 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-11 15:30:38,167 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:30:38,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 119 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:30:38,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-11 15:30:38,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-11 15:30:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 83 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:30:38,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2024-11-11 15:30:38,174 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 151 [2024-11-11 15:30:38,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:30:38,175 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2024-11-11 15:30:38,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 15:30:38,175 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2024-11-11 15:30:38,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-11 15:30:38,177 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:30:38,177 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:30:38,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-11 15:30:38,381 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,SelfDestructingSolverStorable8 [2024-11-11 15:30:38,382 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:30:38,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:30:38,382 INFO L85 PathProgramCache]: Analyzing trace with hash 150054992, now seen corresponding path program 7 times [2024-11-11 15:30:38,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:30:38,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469811358] [2024-11-11 15:30:38,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:38,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:30:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:41,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 15:30:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:41,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-11 15:30:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:42,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-11 15:30:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-11 15:30:42,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:30:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469811358] [2024-11-11 15:30:42,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469811358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:30:42,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402447489] [2024-11-11 15:30:42,393 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 15:30:42,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:42,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:30:42,395 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) [2024-11-11 15:30:42,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-11 15:30:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:42,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 146 conjuncts are in the unsatisfiable core [2024-11-11 15:30:42,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:30:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-11-11 15:30:43,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:30:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 4 proven. 1305 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-11 15:30:44,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402447489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:30:44,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:30:44,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 21] total 36 [2024-11-11 15:30:44,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497217820] [2024-11-11 15:30:44,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:30:44,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-11 15:30:44,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:30:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-11 15:30:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1168, Unknown=0, NotChecked=0, Total=1260 [2024-11-11 15:30:44,036 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 36 states, 35 states have (on average 2.6) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-11 15:30:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:30:44,588 INFO L93 Difference]: Finished difference Result 270 states and 339 transitions. [2024-11-11 15:30:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-11 15:30:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.6) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 157 [2024-11-11 15:30:44,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:30:44,597 INFO L225 Difference]: With dead ends: 270 [2024-11-11 15:30:44,597 INFO L226 Difference]: Without dead ends: 266 [2024-11-11 15:30:44,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=1168, Unknown=0, NotChecked=0, Total=1260 [2024-11-11 15:30:44,600 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 26 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 15:30:44,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1440 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 15:30:44,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-11 15:30:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 230. [2024-11-11 15:30:44,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 222 states have (on average 1.2702702702702702) internal successors, (282), 223 states have internal predecessors, (282), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-11 15:30:44,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 296 transitions. [2024-11-11 15:30:44,639 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 296 transitions. Word has length 157 [2024-11-11 15:30:44,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:30:44,642 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 296 transitions. [2024-11-11 15:30:44,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.6) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-11 15:30:44,642 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 296 transitions. [2024-11-11 15:30:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-11 15:30:44,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:30:44,645 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:30:44,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-11 15:30:44,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-11 15:30:44,849 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:30:44,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:30:44,850 INFO L85 PathProgramCache]: Analyzing trace with hash 830113362, now seen corresponding path program 1 times [2024-11-11 15:30:44,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:30:44,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147262812] [2024-11-11 15:30:44,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:44,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:30:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:47,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 15:30:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:48,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-11 15:30:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:48,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-11 15:30:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 325 proven. 964 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2024-11-11 15:30:48,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:30:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147262812] [2024-11-11 15:30:48,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147262812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:30:48,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231533748] [2024-11-11 15:30:48,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:30:48,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:30:48,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:30:48,762 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:30:48,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-11 15:30:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:30:48,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-11 15:30:49,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:30:49,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-11 15:30:49,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-11 15:30:49,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-11 15:30:49,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-11 15:30:49,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-11 15:30:49,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-11 15:30:49,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-11 15:30:49,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-11 15:30:49,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-11 15:30:49,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-11-11 15:30:49,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-11 15:30:49,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-11 15:30:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 620 proven. 654 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-11 15:30:50,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:30:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 686 proven. 450 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-11-11 15:30:52,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231533748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:30:52,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:30:52,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 20] total 74 [2024-11-11 15:30:52,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026099149] [2024-11-11 15:30:52,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:30:52,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-11 15:30:52,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:30:52,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-11 15:30:52,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=5087, Unknown=0, NotChecked=0, Total=5402 [2024-11-11 15:30:52,104 INFO L87 Difference]: Start difference. First operand 230 states and 296 transitions. Second operand has 74 states, 72 states have (on average 2.7222222222222223) internal successors, (196), 71 states have internal predecessors, (196), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-11 15:30:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:30:59,850 INFO L93 Difference]: Finished difference Result 1410 states and 1973 transitions. [2024-11-11 15:30:59,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2024-11-11 15:30:59,851 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 72 states have (on average 2.7222222222222223) internal successors, (196), 71 states have internal predecessors, (196), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 157 [2024-11-11 15:30:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:30:59,861 INFO L225 Difference]: With dead ends: 1410 [2024-11-11 15:30:59,861 INFO L226 Difference]: Without dead ends: 1122 [2024-11-11 15:30:59,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13412 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=2140, Invalid=39680, Unknown=0, NotChecked=0, Total=41820 [2024-11-11 15:30:59,878 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 442 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 4321 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 4392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-11 15:30:59,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 1951 Invalid, 4392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 4321 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-11 15:30:59,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2024-11-11 15:30:59,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 751. [2024-11-11 15:30:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 729 states have (on average 1.3319615912208504) internal successors, (971), 735 states have internal predecessors, (971), 10 states have call successors, (10), 5 states have call predecessors, (10), 11 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-11-11 15:31:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1026 transitions. [2024-11-11 15:31:00,001 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1026 transitions. Word has length 157 [2024-11-11 15:31:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:31:00,002 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 1026 transitions. [2024-11-11 15:31:00,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 72 states have (on average 2.7222222222222223) internal successors, (196), 71 states have internal predecessors, (196), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-11 15:31:00,002 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1026 transitions. [2024-11-11 15:31:00,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-11 15:31:00,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:31:00,010 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:31:00,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-11 15:31:00,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-11 15:31:00,215 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:31:00,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:31:00,215 INFO L85 PathProgramCache]: Analyzing trace with hash 408220430, now seen corresponding path program 2 times [2024-11-11 15:31:00,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:31:00,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347877310] [2024-11-11 15:31:00,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:31:00,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:31:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:31:04,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 15:31:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:31:04,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-11 15:31:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:31:04,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-11 15:31:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:31:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 324 proven. 1095 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-11 15:31:05,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:31:05,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347877310] [2024-11-11 15:31:05,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347877310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:31:05,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885080308] [2024-11-11 15:31:05,535 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:31:05,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:31:05,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:31:05,536 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:31:05,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-11 15:31:05,728 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:31:05,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:31:05,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 143 conjuncts are in the unsatisfiable core [2024-11-11 15:31:05,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:31:05,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-11 15:31:05,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-11-11 15:31:06,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:06,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2024-11-11 15:31:06,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:06,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:06,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:06,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:06,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:06,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:06,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:06,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:06,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:06,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:06,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:06,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:06,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:06,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:07,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:07,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2024-11-11 15:31:07,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:07,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2024-11-11 15:31:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 395 proven. 1158 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-11 15:31:08,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:31:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 710 proven. 631 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-11 15:31:11,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885080308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:31:11,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:31:11,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 62, 44] total 120 [2024-11-11 15:31:11,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782506131] [2024-11-11 15:31:11,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:31:11,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2024-11-11 15:31:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:31:11,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2024-11-11 15:31:11,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=712, Invalid=13568, Unknown=0, NotChecked=0, Total=14280 [2024-11-11 15:31:11,711 INFO L87 Difference]: Start difference. First operand 751 states and 1026 transitions. Second operand has 120 states, 120 states have (on average 2.2416666666666667) internal successors, (269), 118 states have internal predecessors, (269), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-11 15:31:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:31:18,872 INFO L93 Difference]: Finished difference Result 3243 states and 4608 transitions. [2024-11-11 15:31:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-11 15:31:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.2416666666666667) internal successors, (269), 118 states have internal predecessors, (269), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 157 [2024-11-11 15:31:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:31:18,885 INFO L225 Difference]: With dead ends: 3243 [2024-11-11 15:31:18,885 INFO L226 Difference]: Without dead ends: 2388 [2024-11-11 15:31:18,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6744 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1474, Invalid=22396, Unknown=0, NotChecked=0, Total=23870 [2024-11-11 15:31:18,891 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 180 mSDsluCounter, 4140 mSDsCounter, 0 mSdLazyCounter, 9063 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 9096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 9063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-11 15:31:18,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 4221 Invalid, 9096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 9063 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-11 15:31:18,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2024-11-11 15:31:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1486. [2024-11-11 15:31:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1446 states have (on average 1.3236514522821576) internal successors, (1914), 1455 states have internal predecessors, (1914), 19 states have call successors, (19), 11 states have call predecessors, (19), 20 states have return successors, (111), 19 states have call predecessors, (111), 19 states have call successors, (111) [2024-11-11 15:31:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2044 transitions. [2024-11-11 15:31:19,054 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2044 transitions. Word has length 157 [2024-11-11 15:31:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:31:19,054 INFO L471 AbstractCegarLoop]: Abstraction has 1486 states and 2044 transitions. [2024-11-11 15:31:19,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.2416666666666667) internal successors, (269), 118 states have internal predecessors, (269), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-11 15:31:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2044 transitions. [2024-11-11 15:31:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-11 15:31:19,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:31:19,065 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:31:19,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-11 15:31:19,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-11 15:31:19,266 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:31:19,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:31:19,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1129808686, now seen corresponding path program 3 times [2024-11-11 15:31:19,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:31:19,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981504659] [2024-11-11 15:31:19,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:31:19,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:31:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:31:23,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 15:31:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:31:23,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-11 15:31:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:31:24,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-11 15:31:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:31:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 648 proven. 773 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-11 15:31:24,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:31:24,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981504659] [2024-11-11 15:31:24,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981504659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:31:24,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448949285] [2024-11-11 15:31:24,611 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:31:24,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:31:24,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:31:24,612 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:31:24,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-11 15:31:25,251 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-11 15:31:25,252 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:31:25,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 134 conjuncts are in the unsatisfiable core [2024-11-11 15:31:25,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:31:25,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-11 15:31:25,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-11 15:31:25,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-11-11 15:31:25,648 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:25,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2024-11-11 15:31:25,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:25,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:25,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:25,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:25,957 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:25,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:26,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:26,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:26,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:26,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:26,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:26,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-11 15:31:26,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:26,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2024-11-11 15:31:26,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:26,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2024-11-11 15:31:26,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:31:26,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2024-11-11 15:31:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 689 proven. 690 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-11-11 15:31:27,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:31:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 691 proven. 650 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-11 15:31:30,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448949285] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:31:30,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:31:30,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 54, 42] total 121 [2024-11-11 15:31:30,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172181165] [2024-11-11 15:31:30,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:31:30,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-11-11 15:31:30,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:31:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-11-11 15:31:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=13361, Unknown=0, NotChecked=0, Total=14520 [2024-11-11 15:31:30,311 INFO L87 Difference]: Start difference. First operand 1486 states and 2044 transitions. Second operand has 121 states, 121 states have (on average 2.1404958677685952) internal successors, (259), 118 states have internal predecessors, (259), 4 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8)