./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound50.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3c408aeb75b378569a9828f29f37caa03495bee0afeec4c4af831c79f34806f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 21:25:50,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 21:25:50,535 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 21:25:50,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 21:25:50,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 21:25:50,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 21:25:50,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 21:25:50,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 21:25:50,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 21:25:50,580 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 21:25:50,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 21:25:50,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 21:25:50,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 21:25:50,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 21:25:50,584 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 21:25:50,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 21:25:50,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 21:25:50,585 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 21:25:50,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 21:25:50,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 21:25:50,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 21:25:50,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 21:25:50,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 21:25:50,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 21:25:50,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 21:25:50,591 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 21:25:50,591 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 21:25:50,591 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 21:25:50,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 21:25:50,592 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 21:25:50,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 21:25:50,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 21:25:50,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 21:25:50,593 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 21:25:50,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 21:25:50,595 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 21:25:50,595 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 21:25:50,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 21:25:50,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 21:25:50,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 21:25:50,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 21:25:50,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 21:25:50,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3c408aeb75b378569a9828f29f37caa03495bee0afeec4c4af831c79f34806f [2024-11-19 21:25:50,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 21:25:50,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 21:25:50,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 21:25:50,869 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 21:25:50,873 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 21:25:50,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound50.c [2024-11-19 21:25:52,336 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 21:25:52,506 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 21:25:52,506 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound50.c [2024-11-19 21:25:52,513 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab87260d/e163756caf3b4a738bcfb845c3ee9a5e/FLAG01b6e0acb [2024-11-19 21:25:52,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab87260d/e163756caf3b4a738bcfb845c3ee9a5e [2024-11-19 21:25:52,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 21:25:52,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 21:25:52,532 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 21:25:52,532 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 21:25:52,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 21:25:52,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b00fe84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52, skipping insertion in model container [2024-11-19 21:25:52,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,556 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 21:25:52,760 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/nla-digbench-scaling/hard-ll_valuebound50.c[538,551] [2024-11-19 21:25:52,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 21:25:52,795 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 21:25:52,807 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/nla-digbench-scaling/hard-ll_valuebound50.c[538,551] [2024-11-19 21:25:52,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 21:25:52,832 INFO L204 MainTranslator]: Completed translation [2024-11-19 21:25:52,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52 WrapperNode [2024-11-19 21:25:52,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 21:25:52,833 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 21:25:52,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 21:25:52,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 21:25:52,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,865 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-11-19 21:25:52,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 21:25:52,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 21:25:52,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 21:25:52,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 21:25:52,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,889 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 21:25:52,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 21:25:52,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 21:25:52,907 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 21:25:52,907 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 21:25:52,908 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (1/1) ... [2024-11-19 21:25:52,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 21:25:52,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:25:52,947 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) [2024-11-19 21:25:52,952 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 [2024-11-19 21:25:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 21:25:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 21:25:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 21:25:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 21:25:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 21:25:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 21:25:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 21:25:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 21:25:53,071 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 21:25:53,075 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 21:25:53,280 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-19 21:25:53,280 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 21:25:53,296 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 21:25:53,296 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 21:25:53,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:25:53 BoogieIcfgContainer [2024-11-19 21:25:53,297 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 21:25:53,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 21:25:53,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 21:25:53,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 21:25:53,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:25:52" (1/3) ... [2024-11-19 21:25:53,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d4115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:25:53, skipping insertion in model container [2024-11-19 21:25:53,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:25:52" (2/3) ... [2024-11-19 21:25:53,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d4115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:25:53, skipping insertion in model container [2024-11-19 21:25:53,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:25:53" (3/3) ... [2024-11-19 21:25:53,307 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound50.c [2024-11-19 21:25:53,325 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 21:25:53,325 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 21:25:53,391 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 21:25:53,399 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;@2945182, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 21:25:53,399 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 21:25:53,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-19 21:25:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 21:25:53,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:25:53,413 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:25:53,413 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:25:53,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:25:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2024-11-19 21:25:53,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:25:53,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502616254] [2024-11-19 21:25:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:25:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:53,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:25:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:53,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:25:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:53,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:25:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 21:25:53,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:25:53,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502616254] [2024-11-19 21:25:53,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502616254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:25:53,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:25:53,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 21:25:53,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408999767] [2024-11-19 21:25:53,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:25:53,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 21:25:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:25:53,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 21:25:53,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 21:25:53,624 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 21:25:53,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:25:53,652 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2024-11-19 21:25:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 21:25:53,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-19 21:25:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:25:53,662 INFO L225 Difference]: With dead ends: 63 [2024-11-19 21:25:53,663 INFO L226 Difference]: Without dead ends: 29 [2024-11-19 21:25:53,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 21:25:53,672 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:25:53,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:25:53,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-19 21:25:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-19 21:25:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 21:25:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2024-11-19 21:25:53,715 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2024-11-19 21:25:53,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:25:53,716 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2024-11-19 21:25:53,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 21:25:53,717 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2024-11-19 21:25:53,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 21:25:53,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:25:53,719 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:25:53,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 21:25:53,720 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:25:53,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:25:53,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2024-11-19 21:25:53,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:25:53,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128932646] [2024-11-19 21:25:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:53,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:25:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:53,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:25:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:53,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:25:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:53,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:25:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 21:25:53,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:25:53,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128932646] [2024-11-19 21:25:53,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128932646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:25:53,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:25:53,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 21:25:53,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776056017] [2024-11-19 21:25:53,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:25:53,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:25:53,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:25:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:25:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:25:53,985 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 21:25:54,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:25:54,094 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2024-11-19 21:25:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:25:54,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-11-19 21:25:54,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:25:54,096 INFO L225 Difference]: With dead ends: 42 [2024-11-19 21:25:54,096 INFO L226 Difference]: Without dead ends: 40 [2024-11-19 21:25:54,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:25:54,097 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:25:54,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 126 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:25:54,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-19 21:25:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-11-19 21:25:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 21:25:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-19 21:25:54,110 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2024-11-19 21:25:54,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:25:54,110 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-19 21:25:54,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 21:25:54,111 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-19 21:25:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 21:25:54,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:25:54,112 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:25:54,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 21:25:54,112 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:25:54,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:25:54,113 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2024-11-19 21:25:54,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:25:54,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322338128] [2024-11-19 21:25:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:54,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:25:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:54,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:25:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:54,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:25:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:54,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:25:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:54,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 21:25:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 21:25:54,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:25:54,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322338128] [2024-11-19 21:25:54,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322338128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:25:54,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:25:54,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 21:25:54,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977821122] [2024-11-19 21:25:54,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:25:54,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:25:54,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:25:54,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:25:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:25:54,348 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 21:25:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:25:54,428 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-11-19 21:25:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:25:54,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-19 21:25:54,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:25:54,433 INFO L225 Difference]: With dead ends: 46 [2024-11-19 21:25:54,433 INFO L226 Difference]: Without dead ends: 44 [2024-11-19 21:25:54,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:25:54,435 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:25:54,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 123 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:25:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-19 21:25:54,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-11-19 21:25:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 21:25:54,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-11-19 21:25:54,451 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2024-11-19 21:25:54,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:25:54,452 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-11-19 21:25:54,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 21:25:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-11-19 21:25:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-19 21:25:54,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:25:54,454 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:25:54,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 21:25:54,454 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:25:54,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:25:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2024-11-19 21:25:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:25:54,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373097382] [2024-11-19 21:25:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:54,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:25:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:25:54,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630656597] [2024-11-19 21:25:54,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:54,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:25:54,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:25:54,496 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) [2024-11-19 21:25:54,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 21:25:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:54,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 21:25:54,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:25:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 21:25:54,683 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 21:25:54,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:25:54,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373097382] [2024-11-19 21:25:54,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:25:54,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630656597] [2024-11-19 21:25:54,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630656597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:25:54,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:25:54,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 21:25:54,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000741370] [2024-11-19 21:25:54,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:25:54,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:25:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:25:54,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:25:54,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:25:54,690 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 21:25:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:25:54,747 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2024-11-19 21:25:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:25:54,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2024-11-19 21:25:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:25:54,748 INFO L225 Difference]: With dead ends: 63 [2024-11-19 21:25:54,748 INFO L226 Difference]: Without dead ends: 50 [2024-11-19 21:25:54,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:25:54,750 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:25:54,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 124 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:25:54,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-19 21:25:54,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-19 21:25:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-19 21:25:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2024-11-19 21:25:54,766 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 34 [2024-11-19 21:25:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:25:54,767 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2024-11-19 21:25:54,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 21:25:54,768 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2024-11-19 21:25:54,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 21:25:54,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:25:54,770 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1] [2024-11-19 21:25:54,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 21:25:54,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:25:54,972 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:25:54,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:25:54,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2024-11-19 21:25:54,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:25:54,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717716255] [2024-11-19 21:25:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:54,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:25:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:25:54,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372607322] [2024-11-19 21:25:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:54,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:25:54,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:25:54,998 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) [2024-11-19 21:25:55,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 21:25:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:55,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 21:25:55,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:25:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 21:25:55,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:25:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 21:25:55,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:25:55,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717716255] [2024-11-19 21:25:55,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:25:55,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372607322] [2024-11-19 21:25:55,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372607322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:25:55,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 21:25:55,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-19 21:25:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276286964] [2024-11-19 21:25:55,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 21:25:55,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 21:25:55,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:25:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 21:25:55,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-19 21:25:55,404 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 21:25:55,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:25:55,539 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2024-11-19 21:25:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 21:25:55,540 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 41 [2024-11-19 21:25:55,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:25:55,543 INFO L225 Difference]: With dead ends: 65 [2024-11-19 21:25:55,545 INFO L226 Difference]: Without dead ends: 63 [2024-11-19 21:25:55,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-19 21:25:55,546 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:25:55,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 161 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:25:55,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-19 21:25:55,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2024-11-19 21:25:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 21:25:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2024-11-19 21:25:55,567 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 41 [2024-11-19 21:25:55,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:25:55,569 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2024-11-19 21:25:55,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 21:25:55,570 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2024-11-19 21:25:55,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 21:25:55,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:25:55,571 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:25:55,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 21:25:55,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:25:55,772 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:25:55,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:25:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash 105343995, now seen corresponding path program 1 times [2024-11-19 21:25:55,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:25:55,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565961923] [2024-11-19 21:25:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:55,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:25:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:25:55,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141078811] [2024-11-19 21:25:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:55,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:25:55,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:25:55,795 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) [2024-11-19 21:25:55,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 21:25:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:55,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 21:25:55,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:25:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-19 21:25:56,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:25:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-19 21:25:56,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:25:56,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565961923] [2024-11-19 21:25:56,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:25:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141078811] [2024-11-19 21:25:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141078811] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 21:25:56,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 21:25:56,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-19 21:25:56,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992436104] [2024-11-19 21:25:56,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:25:56,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:25:56,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:25:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:25:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 21:25:56,120 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 21:25:56,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:25:56,194 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2024-11-19 21:25:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:25:56,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2024-11-19 21:25:56,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:25:56,196 INFO L225 Difference]: With dead ends: 70 [2024-11-19 21:25:56,196 INFO L226 Difference]: Without dead ends: 68 [2024-11-19 21:25:56,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 21:25:56,197 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:25:56,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 117 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:25:56,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-19 21:25:56,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-11-19 21:25:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-19 21:25:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2024-11-19 21:25:56,213 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 51 [2024-11-19 21:25:56,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:25:56,213 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2024-11-19 21:25:56,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 21:25:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2024-11-19 21:25:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 21:25:56,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:25:56,214 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:25:56,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 21:25:56,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:25:56,419 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:25:56,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:25:56,419 INFO L85 PathProgramCache]: Analyzing trace with hash -144627113, now seen corresponding path program 1 times [2024-11-19 21:25:56,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:25:56,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118728059] [2024-11-19 21:25:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:25:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:56,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:25:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:56,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:25:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:56,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:25:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:56,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 21:25:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:56,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-19 21:25:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:56,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-19 21:25:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:56,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-19 21:25:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:56,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 21:25:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:56,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-19 21:25:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-19 21:25:56,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:25:56,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118728059] [2024-11-19 21:25:56,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118728059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:25:56,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:25:56,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 21:25:56,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529043887] [2024-11-19 21:25:56,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:25:56,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:25:56,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:25:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:25:56,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:25:56,617 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-19 21:25:56,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:25:56,680 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2024-11-19 21:25:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:25:56,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 57 [2024-11-19 21:25:56,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:25:56,682 INFO L225 Difference]: With dead ends: 75 [2024-11-19 21:25:56,686 INFO L226 Difference]: Without dead ends: 63 [2024-11-19 21:25:56,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:25:56,687 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:25:56,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 134 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:25:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-19 21:25:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-19 21:25:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 21:25:56,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-19 21:25:56,702 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 57 [2024-11-19 21:25:56,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:25:56,705 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-19 21:25:56,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-19 21:25:56,705 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-19 21:25:56,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-19 21:25:56,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:25:56,706 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:25:56,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 21:25:56,707 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:25:56,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:25:56,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2024-11-19 21:25:56,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:25:56,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733898945] [2024-11-19 21:25:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:56,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:25:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:25:56,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377822550] [2024-11-19 21:25:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:25:56,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:25:56,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:25:56,750 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) [2024-11-19 21:25:56,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 21:25:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:25:56,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 21:25:56,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:25:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-19 21:25:57,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:25:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-19 21:25:59,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:25:59,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733898945] [2024-11-19 21:25:59,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:25:59,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377822550] [2024-11-19 21:25:59,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377822550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:25:59,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 21:25:59,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-19 21:25:59,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787567277] [2024-11-19 21:25:59,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 21:25:59,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 21:25:59,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:25:59,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 21:25:59,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-19 21:25:59,679 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-19 21:26:02,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:26:02,102 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2024-11-19 21:26:02,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 21:26:02,103 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 71 [2024-11-19 21:26:02,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:26:02,107 INFO L225 Difference]: With dead ends: 150 [2024-11-19 21:26:02,107 INFO L226 Difference]: Without dead ends: 127 [2024-11-19 21:26:02,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2024-11-19 21:26:02,108 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 67 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-19 21:26:02,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 328 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-19 21:26:02,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-19 21:26:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2024-11-19 21:26:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 61 states have (on average 1.180327868852459) internal successors, (72), 65 states have internal predecessors, (72), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-19 21:26:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 129 transitions. [2024-11-19 21:26:02,140 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 129 transitions. Word has length 71 [2024-11-19 21:26:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:26:02,140 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 129 transitions. [2024-11-19 21:26:02,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-19 21:26:02,141 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 129 transitions. [2024-11-19 21:26:02,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-19 21:26:02,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:26:02,142 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:26:02,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 21:26:02,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:02,347 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:26:02,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:26:02,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2024-11-19 21:26:02,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:26:02,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191415857] [2024-11-19 21:26:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:02,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:26:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:26:02,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410373760] [2024-11-19 21:26:02,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:02,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:02,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:26:02,377 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) [2024-11-19 21:26:02,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 21:26:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:02,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 21:26:02,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:26:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-19 21:26:02,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:26:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-19 21:26:03,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:26:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191415857] [2024-11-19 21:26:03,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:26:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410373760] [2024-11-19 21:26:03,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410373760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:26:03,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 21:26:03,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-19 21:26:03,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730656630] [2024-11-19 21:26:03,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 21:26:03,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 21:26:03,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:26:03,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 21:26:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-11-19 21:26:03,548 INFO L87 Difference]: Start difference. First operand 102 states and 129 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-19 21:26:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:26:04,111 INFO L93 Difference]: Finished difference Result 142 states and 177 transitions. [2024-11-19 21:26:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 21:26:04,112 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) Word has length 82 [2024-11-19 21:26:04,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:26:04,114 INFO L225 Difference]: With dead ends: 142 [2024-11-19 21:26:04,114 INFO L226 Difference]: Without dead ends: 108 [2024-11-19 21:26:04,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-11-19 21:26:04,115 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 21:26:04,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 439 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 21:26:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-19 21:26:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2024-11-19 21:26:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 59 states have internal predecessors, (66), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 21:26:04,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 115 transitions. [2024-11-19 21:26:04,150 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 115 transitions. Word has length 82 [2024-11-19 21:26:04,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:26:04,152 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 115 transitions. [2024-11-19 21:26:04,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-19 21:26:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 115 transitions. [2024-11-19 21:26:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-19 21:26:04,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:26:04,154 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:26:04,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 21:26:04,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:04,355 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:26:04,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:26:04,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1888027627, now seen corresponding path program 2 times [2024-11-19 21:26:04,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:26:04,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599649286] [2024-11-19 21:26:04,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:04,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:26:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:26:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:26:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:26:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 21:26:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-19 21:26:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-19 21:26:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-19 21:26:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 21:26:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-19 21:26:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 21:26:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-19 21:26:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 21:26:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-19 21:26:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-19 21:26:04,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:26:04,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599649286] [2024-11-19 21:26:04,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599649286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:26:04,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686797901] [2024-11-19 21:26:04,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 21:26:04,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:04,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:26:04,601 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) [2024-11-19 21:26:04,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 21:26:04,655 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 21:26:04,656 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:26:04,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 21:26:04,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:26:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-19 21:26:04,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:26:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-19 21:26:04,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686797901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:26:04,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:26:04,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-19 21:26:04,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142124977] [2024-11-19 21:26:04,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:26:04,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:26:04,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:26:04,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:26:04,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:26:04,804 INFO L87 Difference]: Start difference. First operand 94 states and 115 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 21:26:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:26:04,864 INFO L93 Difference]: Finished difference Result 121 states and 152 transitions. [2024-11-19 21:26:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 21:26:04,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 84 [2024-11-19 21:26:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:26:04,866 INFO L225 Difference]: With dead ends: 121 [2024-11-19 21:26:04,866 INFO L226 Difference]: Without dead ends: 99 [2024-11-19 21:26:04,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:26:04,867 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:26:04,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:26:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-19 21:26:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-19 21:26:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-19 21:26:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 122 transitions. [2024-11-19 21:26:04,898 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 122 transitions. Word has length 84 [2024-11-19 21:26:04,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:26:04,899 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 122 transitions. [2024-11-19 21:26:04,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 21:26:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 122 transitions. [2024-11-19 21:26:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-19 21:26:04,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:26:04,900 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:26:04,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 21:26:05,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:05,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:26:05,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:26:05,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1729716470, now seen corresponding path program 1 times [2024-11-19 21:26:05,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:26:05,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348946929] [2024-11-19 21:26:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:05,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:26:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:26:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:26:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:26:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 21:26:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-19 21:26:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-19 21:26:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-19 21:26:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 21:26:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-19 21:26:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 21:26:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-19 21:26:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 21:26:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-19 21:26:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 21:26:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-19 21:26:05,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:26:05,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348946929] [2024-11-19 21:26:05,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348946929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:26:05,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139242347] [2024-11-19 21:26:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:05,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:05,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:26:05,450 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) [2024-11-19 21:26:05,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 21:26:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:05,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 21:26:05,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:26:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-19 21:26:05,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:26:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-19 21:26:06,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139242347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:26:06,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:26:06,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 18 [2024-11-19 21:26:06,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669375322] [2024-11-19 21:26:06,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:26:06,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 21:26:06,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:26:06,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 21:26:06,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-19 21:26:06,204 INFO L87 Difference]: Start difference. First operand 99 states and 122 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-19 21:26:06,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:26:06,599 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2024-11-19 21:26:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 21:26:06,600 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 87 [2024-11-19 21:26:06,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:26:06,601 INFO L225 Difference]: With dead ends: 114 [2024-11-19 21:26:06,601 INFO L226 Difference]: Without dead ends: 97 [2024-11-19 21:26:06,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-19 21:26:06,602 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 22 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 21:26:06,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 375 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 21:26:06,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-19 21:26:06,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2024-11-19 21:26:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 57 states have internal predecessors, (63), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-19 21:26:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2024-11-19 21:26:06,633 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 87 [2024-11-19 21:26:06,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:26:06,634 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2024-11-19 21:26:06,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-19 21:26:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2024-11-19 21:26:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-19 21:26:06,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:26:06,635 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:26:06,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 21:26:06,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:06,840 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:26:06,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:26:06,841 INFO L85 PathProgramCache]: Analyzing trace with hash -219918921, now seen corresponding path program 1 times [2024-11-19 21:26:06,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:26:06,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275828418] [2024-11-19 21:26:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:06,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:26:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:26:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:26:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:26:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 21:26:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-19 21:26:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-19 21:26:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-19 21:26:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 21:26:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-19 21:26:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 21:26:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-19 21:26:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-19 21:26:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-19 21:26:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-19 21:26:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-19 21:26:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-19 21:26:06,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:26:06,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275828418] [2024-11-19 21:26:06,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275828418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:26:06,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570397528] [2024-11-19 21:26:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:06,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:06,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:26:06,972 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) [2024-11-19 21:26:06,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 21:26:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:07,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 21:26:07,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:26:07,053 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-19 21:26:07,054 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 21:26:07,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570397528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:26:07,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 21:26:07,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-19 21:26:07,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177511716] [2024-11-19 21:26:07,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:26:07,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:26:07,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:26:07,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:26:07,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:26:07,055 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-19 21:26:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:26:07,120 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2024-11-19 21:26:07,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:26:07,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 91 [2024-11-19 21:26:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:26:07,121 INFO L225 Difference]: With dead ends: 97 [2024-11-19 21:26:07,121 INFO L226 Difference]: Without dead ends: 85 [2024-11-19 21:26:07,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:26:07,122 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:26:07,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 116 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:26:07,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-19 21:26:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-19 21:26:07,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-19 21:26:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2024-11-19 21:26:07,148 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 91 [2024-11-19 21:26:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:26:07,149 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2024-11-19 21:26:07,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-19 21:26:07,150 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2024-11-19 21:26:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-19 21:26:07,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:26:07,151 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:26:07,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 21:26:07,351 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,SelfDestructingSolverStorable11 [2024-11-19 21:26:07,351 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:26:07,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:26:07,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2103086134, now seen corresponding path program 3 times [2024-11-19 21:26:07,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:26:07,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297678619] [2024-11-19 21:26:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:07,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:26:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:26:07,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96519251] [2024-11-19 21:26:07,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 21:26:07,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:07,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:26:07,396 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) [2024-11-19 21:26:07,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 21:26:07,456 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 21:26:07,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:26:07,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-19 21:26:07,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:26:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 29 proven. 27 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-19 21:26:08,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:26:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-19 21:26:20,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:26:20,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297678619] [2024-11-19 21:26:20,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:26:20,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96519251] [2024-11-19 21:26:20,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96519251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:26:20,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 21:26:20,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-11-19 21:26:20,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190280619] [2024-11-19 21:26:20,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 21:26:20,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 21:26:20,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:26:20,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 21:26:20,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-19 21:26:20,361 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-19 21:26:24,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:26:24,332 INFO L93 Difference]: Finished difference Result 165 states and 218 transitions. [2024-11-19 21:26:24,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 21:26:24,333 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 101 [2024-11-19 21:26:24,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:26:24,334 INFO L225 Difference]: With dead ends: 165 [2024-11-19 21:26:24,334 INFO L226 Difference]: Without dead ends: 143 [2024-11-19 21:26:24,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2024-11-19 21:26:24,335 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 91 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-19 21:26:24,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 475 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-19 21:26:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-19 21:26:24,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 128. [2024-11-19 21:26:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 80 states have internal predecessors, (88), 37 states have call successors, (37), 13 states have call predecessors, (37), 13 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 21:26:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 161 transitions. [2024-11-19 21:26:24,376 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 161 transitions. Word has length 101 [2024-11-19 21:26:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:26:24,377 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 161 transitions. [2024-11-19 21:26:24,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-19 21:26:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 161 transitions. [2024-11-19 21:26:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-19 21:26:24,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:26:24,380 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:26:24,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 21:26:24,580 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,SelfDestructingSolverStorable12 [2024-11-19 21:26:24,580 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:26:24,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:26:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1168936300, now seen corresponding path program 2 times [2024-11-19 21:26:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:26:24,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178002686] [2024-11-19 21:26:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:24,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:26:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:26:24,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452707543] [2024-11-19 21:26:24,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 21:26:24,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:24,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:26:24,650 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) [2024-11-19 21:26:24,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 21:26:24,717 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 21:26:24,718 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:26:24,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 21:26:24,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:26:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 124 proven. 22 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-19 21:26:24,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:26:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-19 21:26:25,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:26:25,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178002686] [2024-11-19 21:26:25,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 21:26:25,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452707543] [2024-11-19 21:26:25,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452707543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:26:25,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 21:26:25,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2024-11-19 21:26:25,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129240727] [2024-11-19 21:26:25,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 21:26:25,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 21:26:25,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:26:25,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 21:26:25,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-19 21:26:25,069 INFO L87 Difference]: Start difference. First operand 128 states and 161 transitions. Second operand has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-19 21:26:25,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:26:25,535 INFO L93 Difference]: Finished difference Result 144 states and 175 transitions. [2024-11-19 21:26:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 21:26:25,536 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 112 [2024-11-19 21:26:25,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:26:25,537 INFO L225 Difference]: With dead ends: 144 [2024-11-19 21:26:25,537 INFO L226 Difference]: Without dead ends: 142 [2024-11-19 21:26:25,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-11-19 21:26:25,538 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 21:26:25,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 167 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 21:26:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-19 21:26:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-19 21:26:25,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 87 states have (on average 1.1264367816091954) internal successors, (98), 91 states have internal predecessors, (98), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 34 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-19 21:26:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 173 transitions. [2024-11-19 21:26:25,581 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 173 transitions. Word has length 112 [2024-11-19 21:26:25,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:26:25,581 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 173 transitions. [2024-11-19 21:26:25,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-19 21:26:25,582 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 173 transitions. [2024-11-19 21:26:25,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-19 21:26:25,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:26:25,583 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:26:25,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 21:26:25,787 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,SelfDestructingSolverStorable13 [2024-11-19 21:26:25,788 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:26:25,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:26:25,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1560875064, now seen corresponding path program 4 times [2024-11-19 21:26:25,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:26:25,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811575261] [2024-11-19 21:26:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:25,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:26:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:26:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:26:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:26:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 21:26:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-19 21:26:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-19 21:26:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-19 21:26:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 21:26:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-19 21:26:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 21:26:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-19 21:26:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-19 21:26:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-19 21:26:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-19 21:26:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-19 21:26:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-19 21:26:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-19 21:26:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-19 21:26:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-11-19 21:26:26,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:26:26,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811575261] [2024-11-19 21:26:26,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811575261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:26:26,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877198371] [2024-11-19 21:26:26,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 21:26:26,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:26,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:26:26,139 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) [2024-11-19 21:26:26,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 21:26:26,201 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 21:26:26,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:26:26,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 21:26:26,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:26:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-11-19 21:26:26,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:26:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 43 proven. 23 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-11-19 21:26:26,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877198371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:26:26,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:26:26,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-19 21:26:26,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466516169] [2024-11-19 21:26:26,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:26:26,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 21:26:26,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:26:26,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 21:26:26,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 21:26:26,453 INFO L87 Difference]: Start difference. First operand 142 states and 173 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2024-11-19 21:26:26,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:26:26,556 INFO L93 Difference]: Finished difference Result 174 states and 215 transitions. [2024-11-19 21:26:26,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 21:26:26,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 114 [2024-11-19 21:26:26,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:26:26,559 INFO L225 Difference]: With dead ends: 174 [2024-11-19 21:26:26,559 INFO L226 Difference]: Without dead ends: 146 [2024-11-19 21:26:26,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 21:26:26,560 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:26:26,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 145 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:26:26,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-19 21:26:26,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2024-11-19 21:26:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 88 states have (on average 1.125) internal successors, (99), 93 states have internal predecessors, (99), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (38), 34 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-19 21:26:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 176 transitions. [2024-11-19 21:26:26,621 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 176 transitions. Word has length 114 [2024-11-19 21:26:26,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:26:26,622 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 176 transitions. [2024-11-19 21:26:26,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2024-11-19 21:26:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 176 transitions. [2024-11-19 21:26:26,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 21:26:26,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:26:26,624 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:26:26,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 21:26:26,824 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,SelfDestructingSolverStorable14 [2024-11-19 21:26:26,825 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:26:26,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:26:26,825 INFO L85 PathProgramCache]: Analyzing trace with hash -808506761, now seen corresponding path program 2 times [2024-11-19 21:26:26,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:26:26,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053694480] [2024-11-19 21:26:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:26,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:26:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 21:26:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 21:26:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 21:26:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 21:26:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-19 21:26:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-19 21:26:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-19 21:26:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 21:26:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-19 21:26:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 21:26:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-19 21:26:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-19 21:26:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-19 21:26:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-19 21:26:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-19 21:26:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-19 21:26:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-19 21:26:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-19 21:26:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-19 21:26:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:26:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-11-19 21:26:27,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:26:27,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053694480] [2024-11-19 21:26:27,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053694480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:26:27,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359589286] [2024-11-19 21:26:27,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 21:26:27,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:27,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:26:27,254 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) [2024-11-19 21:26:27,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 21:26:27,313 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 21:26:27,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:26:27,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 21:26:27,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:26:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-19 21:26:27,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:26:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-19 21:26:28,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359589286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:26:28,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:26:28,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 14] total 30 [2024-11-19 21:26:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182632770] [2024-11-19 21:26:28,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:26:28,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 21:26:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:26:28,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 21:26:28,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-11-19 21:26:28,961 INFO L87 Difference]: Start difference. First operand 144 states and 176 transitions. Second operand has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 19 states have call predecessors, (48), 19 states have call successors, (48) [2024-11-19 21:26:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:26:29,604 INFO L93 Difference]: Finished difference Result 161 states and 199 transitions. [2024-11-19 21:26:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 21:26:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 19 states have call predecessors, (48), 19 states have call successors, (48) Word has length 117 [2024-11-19 21:26:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:26:29,606 INFO L225 Difference]: With dead ends: 161 [2024-11-19 21:26:29,606 INFO L226 Difference]: Without dead ends: 133 [2024-11-19 21:26:29,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 21:26:29,608 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 27 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 21:26:29,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 506 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 21:26:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-19 21:26:29,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 128. [2024-11-19 21:26:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 83 states have internal predecessors, (88), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-19 21:26:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2024-11-19 21:26:29,645 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 117 [2024-11-19 21:26:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:26:29,646 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2024-11-19 21:26:29,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 19 states have call predecessors, (48), 19 states have call successors, (48) [2024-11-19 21:26:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2024-11-19 21:26:29,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-19 21:26:29,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:26:29,648 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:26:29,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 21:26:29,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 21:26:29,851 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:26:29,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:26:29,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1330691261, now seen corresponding path program 5 times [2024-11-19 21:26:29,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:26:29,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590261382] [2024-11-19 21:26:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:26:29,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:26:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 21:26:29,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655389342] [2024-11-19 21:26:29,912 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 21:26:29,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:26:29,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:26:29,915 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:26:29,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 21:26:30,032 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-19 21:26:30,032 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:26:30,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-19 21:26:30,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:26:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 88 proven. 95 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2024-11-19 21:26:30,732 INFO L311 TraceCheckSpWp]: Computing backward predicates...