./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/ps4-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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/ps4-ll_unwindbound100.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 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 00:29:00,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 00:29:00,551 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 00:29:00,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 00:29:00,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 00:29:00,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 00:29:00,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 00:29:00,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 00:29:00,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 00:29:00,579 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 00:29:00,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 00:29:00,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 00:29:00,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 00:29:00,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 00:29:00,580 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 00:29:00,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 00:29:00,581 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 00:29:00,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 00:29:00,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 00:29:00,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 00:29:00,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 00:29:00,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 00:29:00,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 00:29:00,589 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 00:29:00,589 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 00:29:00,589 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 00:29:00,590 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 00:29:00,590 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 00:29:00,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 00:29:00,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 00:29:00,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 00:29:00,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 00:29:00,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:29:00,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 00:29:00,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 00:29:00,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 00:29:00,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 00:29:00,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 00:29:00,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 00:29:00,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 00:29:00,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 00:29:00,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 00:29:00,593 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 [2024-10-24 00:29:00,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 00:29:00,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 00:29:00,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 00:29:00,835 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 00:29:00,835 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 00:29:00,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2024-10-24 00:29:02,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 00:29:02,738 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 00:29:02,739 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2024-10-24 00:29:02,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51501103e/1fea5e6cd30741089a7fd6004148a106/FLAG620efa526 [2024-10-24 00:29:03,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51501103e/1fea5e6cd30741089a7fd6004148a106 [2024-10-24 00:29:03,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 00:29:03,157 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 00:29:03,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 00:29:03,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 00:29:03,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 00:29:03,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679767ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03, skipping insertion in model container [2024-10-24 00:29:03,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,195 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 00:29:03,375 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c[458,471] [2024-10-24 00:29:03,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:29:03,399 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 00:29:03,408 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c[458,471] [2024-10-24 00:29:03,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:29:03,430 INFO L204 MainTranslator]: Completed translation [2024-10-24 00:29:03,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03 WrapperNode [2024-10-24 00:29:03,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 00:29:03,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 00:29:03,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 00:29:03,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 00:29:03,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,454 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2024-10-24 00:29:03,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 00:29:03,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 00:29:03,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 00:29:03,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 00:29:03,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,464 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,472 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]. [2024-10-24 00:29:03,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 00:29:03,479 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 00:29:03,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 00:29:03,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 00:29:03,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (1/1) ... [2024-10-24 00:29:03,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:29:03,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:03,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 00:29:03,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 00:29:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 00:29:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 00:29:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 00:29:03,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 00:29:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 00:29:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 00:29:03,622 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 00:29:03,625 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 00:29:03,823 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-24 00:29:03,823 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 00:29:03,854 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 00:29:03,854 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 00:29:03,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:29:03 BoogieIcfgContainer [2024-10-24 00:29:03,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 00:29:03,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 00:29:03,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 00:29:03,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 00:29:03,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:29:03" (1/3) ... [2024-10-24 00:29:03,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24de9654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:29:03, skipping insertion in model container [2024-10-24 00:29:03,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:29:03" (2/3) ... [2024-10-24 00:29:03,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24de9654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:29:03, skipping insertion in model container [2024-10-24 00:29:03,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:29:03" (3/3) ... [2024-10-24 00:29:03,888 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound100.c [2024-10-24 00:29:03,907 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 00:29:03,907 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 00:29:03,965 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 00:29:03,972 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;@36b99635, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 00:29:03,973 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 00:29:03,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 00:29:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-24 00:29:03,987 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:03,988 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 00:29:03,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:03,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2070802916, now seen corresponding path program 1 times [2024-10-24 00:29:04,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:04,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718822386] [2024-10-24 00:29:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:04,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:04,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718822386] [2024-10-24 00:29:04,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718822386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:29:04,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:29:04,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 00:29:04,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901177354] [2024-10-24 00:29:04,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:29:04,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 00:29:04,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:04,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 00:29:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 00:29:04,224 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:04,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:04,249 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2024-10-24 00:29:04,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 00:29:04,252 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-24 00:29:04,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:04,259 INFO L225 Difference]: With dead ends: 29 [2024-10-24 00:29:04,259 INFO L226 Difference]: Without dead ends: 13 [2024-10-24 00:29:04,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 00:29:04,266 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:04,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:29:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-24 00:29:04,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-24 00:29:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 00:29:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-10-24 00:29:04,302 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 6 [2024-10-24 00:29:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:04,302 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-10-24 00:29:04,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2024-10-24 00:29:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-24 00:29:04,304 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:04,304 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:04,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 00:29:04,305 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:04,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:04,306 INFO L85 PathProgramCache]: Analyzing trace with hash -170804699, now seen corresponding path program 1 times [2024-10-24 00:29:04,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:04,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347112988] [2024-10-24 00:29:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:04,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:04,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:04,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347112988] [2024-10-24 00:29:04,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347112988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:29:04,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:29:04,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 00:29:04,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770620650] [2024-10-24 00:29:04,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:29:04,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 00:29:04,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 00:29:04,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 00:29:04,426 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:04,451 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-10-24 00:29:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 00:29:04,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-24 00:29:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:04,453 INFO L225 Difference]: With dead ends: 23 [2024-10-24 00:29:04,453 INFO L226 Difference]: Without dead ends: 15 [2024-10-24 00:29:04,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 00:29:04,454 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:04,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:29:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-24 00:29:04,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-24 00:29:04,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 00:29:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-10-24 00:29:04,460 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 7 [2024-10-24 00:29:04,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:04,460 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-24 00:29:04,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:04,461 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-10-24 00:29:04,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-24 00:29:04,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:04,463 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:04,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 00:29:04,463 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:04,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:04,464 INFO L85 PathProgramCache]: Analyzing trace with hash -169017239, now seen corresponding path program 1 times [2024-10-24 00:29:04,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:04,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923486747] [2024-10-24 00:29:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:04,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:29:04,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546416709] [2024-10-24 00:29:04,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:04,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:04,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:04,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:29:04,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 00:29:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:04,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 00:29:04,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:04,620 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:29:04,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:04,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923486747] [2024-10-24 00:29:04,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:29:04,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546416709] [2024-10-24 00:29:04,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546416709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:29:04,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:29:04,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 00:29:04,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100621347] [2024-10-24 00:29:04,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:29:04,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:29:04,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:04,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:29:04,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:29:04,627 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:04,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:04,692 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-10-24 00:29:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:29:04,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-24 00:29:04,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:04,693 INFO L225 Difference]: With dead ends: 25 [2024-10-24 00:29:04,694 INFO L226 Difference]: Without dead ends: 21 [2024-10-24 00:29:04,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 00:29:04,695 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:04,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:29:04,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-24 00:29:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-24 00:29:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 00:29:04,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-10-24 00:29:04,706 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 7 [2024-10-24 00:29:04,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:04,707 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-10-24 00:29:04,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:29:04,707 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-10-24 00:29:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-24 00:29:04,711 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:04,711 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:04,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 00:29:04,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:04,912 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:04,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:04,913 INFO L85 PathProgramCache]: Analyzing trace with hash 867499275, now seen corresponding path program 1 times [2024-10-24 00:29:04,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:04,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982786736] [2024-10-24 00:29:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:04,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:05,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 00:29:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:05,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:05,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982786736] [2024-10-24 00:29:05,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982786736] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:29:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228356329] [2024-10-24 00:29:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:05,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:05,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:05,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:29:05,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 00:29:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:05,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 00:29:05,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:05,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:05,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228356329] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:05,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:29:05,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 10 [2024-10-24 00:29:05,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848425319] [2024-10-24 00:29:05,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:05,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 00:29:05,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:05,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 00:29:05,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-24 00:29:05,304 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 00:29:05,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:05,424 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2024-10-24 00:29:05,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 00:29:05,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2024-10-24 00:29:05,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:05,425 INFO L225 Difference]: With dead ends: 55 [2024-10-24 00:29:05,425 INFO L226 Difference]: Without dead ends: 47 [2024-10-24 00:29:05,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-10-24 00:29:05,426 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:05,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 61 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:29:05,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-24 00:29:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2024-10-24 00:29:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-24 00:29:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2024-10-24 00:29:05,443 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 15 [2024-10-24 00:29:05,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:05,445 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2024-10-24 00:29:05,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 00:29:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2024-10-24 00:29:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-24 00:29:05,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:05,449 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:05,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 00:29:05,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-24 00:29:05,650 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:05,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:05,651 INFO L85 PathProgramCache]: Analyzing trace with hash 869286735, now seen corresponding path program 1 times [2024-10-24 00:29:05,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:05,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407097435] [2024-10-24 00:29:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:05,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:29:05,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268625024] [2024-10-24 00:29:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:05,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:05,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:05,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:29:05,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 00:29:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:05,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 00:29:05,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:05,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:06,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:06,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407097435] [2024-10-24 00:29:06,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:29:06,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268625024] [2024-10-24 00:29:06,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268625024] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:06,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:29:06,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2024-10-24 00:29:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761781331] [2024-10-24 00:29:06,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:06,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 00:29:06,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:06,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 00:29:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-24 00:29:06,051 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 00:29:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:06,149 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2024-10-24 00:29:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 00:29:06,151 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-10-24 00:29:06,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:06,152 INFO L225 Difference]: With dead ends: 57 [2024-10-24 00:29:06,154 INFO L226 Difference]: Without dead ends: 46 [2024-10-24 00:29:06,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-24 00:29:06,155 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:06,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 53 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:29:06,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-24 00:29:06,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2024-10-24 00:29:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-24 00:29:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2024-10-24 00:29:06,179 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 15 [2024-10-24 00:29:06,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:06,179 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2024-10-24 00:29:06,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 00:29:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2024-10-24 00:29:06,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-24 00:29:06,180 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:06,180 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 00:29:06,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 00:29:06,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:06,381 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:06,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:06,382 INFO L85 PathProgramCache]: Analyzing trace with hash 24753612, now seen corresponding path program 1 times [2024-10-24 00:29:06,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:06,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590645139] [2024-10-24 00:29:06,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:06,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:29:06,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705602954] [2024-10-24 00:29:06,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:06,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:06,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:06,430 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:29:06,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 00:29:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:06,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 00:29:06,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 00:29:06,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 00:29:07,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:07,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590645139] [2024-10-24 00:29:07,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:29:07,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705602954] [2024-10-24 00:29:07,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705602954] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:07,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:29:07,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-10-24 00:29:07,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205620438] [2024-10-24 00:29:07,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:07,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 00:29:07,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:07,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 00:29:07,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-10-24 00:29:07,009 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-24 00:29:07,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:07,214 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2024-10-24 00:29:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 00:29:07,214 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2024-10-24 00:29:07,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:07,215 INFO L225 Difference]: With dead ends: 48 [2024-10-24 00:29:07,217 INFO L226 Difference]: Without dead ends: 42 [2024-10-24 00:29:07,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-10-24 00:29:07,218 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:07,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 82 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:29:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-24 00:29:07,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-10-24 00:29:07,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-24 00:29:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-10-24 00:29:07,239 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 21 [2024-10-24 00:29:07,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:07,243 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-10-24 00:29:07,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-24 00:29:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-10-24 00:29:07,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 00:29:07,244 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:07,244 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-10-24 00:29:07,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 00:29:07,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:07,445 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:07,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:07,446 INFO L85 PathProgramCache]: Analyzing trace with hash -795795011, now seen corresponding path program 2 times [2024-10-24 00:29:07,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:07,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115886317] [2024-10-24 00:29:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:07,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:07,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 00:29:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:07,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 00:29:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:07,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 00:29:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:07,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 00:29:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-24 00:29:07,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:07,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115886317] [2024-10-24 00:29:07,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115886317] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:29:07,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046562418] [2024-10-24 00:29:07,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:29:07,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:07,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:07,821 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:29:07,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 00:29:07,861 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:29:07,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:29:07,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 00:29:07,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:07,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-24 00:29:07,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046562418] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:07,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:29:07,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 16 [2024-10-24 00:29:07,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953986102] [2024-10-24 00:29:07,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:07,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 00:29:07,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:07,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 00:29:07,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2024-10-24 00:29:07,992 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-24 00:29:08,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:08,130 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2024-10-24 00:29:08,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 00:29:08,130 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 39 [2024-10-24 00:29:08,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:08,131 INFO L225 Difference]: With dead ends: 118 [2024-10-24 00:29:08,132 INFO L226 Difference]: Without dead ends: 113 [2024-10-24 00:29:08,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=356, Unknown=0, NotChecked=0, Total=552 [2024-10-24 00:29:08,137 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 97 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:08,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 94 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:29:08,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-24 00:29:08,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 88. [2024-10-24 00:29:08,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.106060606060606) internal successors, (73), 66 states have internal predecessors, (73), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-24 00:29:08,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2024-10-24 00:29:08,161 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 39 [2024-10-24 00:29:08,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:08,161 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2024-10-24 00:29:08,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-24 00:29:08,162 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2024-10-24 00:29:08,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-24 00:29:08,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:08,163 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2024-10-24 00:29:08,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 00:29:08,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:08,363 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:08,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1312813826, now seen corresponding path program 2 times [2024-10-24 00:29:08,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:08,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300345001] [2024-10-24 00:29:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:08,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:29:08,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598749482] [2024-10-24 00:29:08,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:29:08,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:08,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:08,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:29:08,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 00:29:08,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:29:08,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:29:08,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-24 00:29:08,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-24 00:29:08,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-24 00:29:09,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:09,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300345001] [2024-10-24 00:29:09,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:29:09,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598749482] [2024-10-24 00:29:09,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598749482] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:09,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:29:09,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-10-24 00:29:09,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131452943] [2024-10-24 00:29:09,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:09,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 00:29:09,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 00:29:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-10-24 00:29:09,139 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 22 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-24 00:29:09,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:09,561 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2024-10-24 00:29:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 00:29:09,562 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 45 [2024-10-24 00:29:09,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:09,563 INFO L225 Difference]: With dead ends: 94 [2024-10-24 00:29:09,563 INFO L226 Difference]: Without dead ends: 88 [2024-10-24 00:29:09,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-10-24 00:29:09,564 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:09,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 205 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 00:29:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-24 00:29:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-24 00:29:09,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-24 00:29:09,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2024-10-24 00:29:09,583 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 45 [2024-10-24 00:29:09,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:09,583 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2024-10-24 00:29:09,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-24 00:29:09,583 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2024-10-24 00:29:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-24 00:29:09,585 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:09,585 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2024-10-24 00:29:09,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 00:29:09,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:09,787 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:09,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:09,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1242040609, now seen corresponding path program 3 times [2024-10-24 00:29:09,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:09,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30890730] [2024-10-24 00:29:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:09,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:10,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 00:29:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:10,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 00:29:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:10,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 00:29:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:10,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 00:29:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:10,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 00:29:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:10,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 00:29:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:10,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:29:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:10,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 00:29:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:10,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 00:29:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:10,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 00:29:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-24 00:29:10,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:10,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30890730] [2024-10-24 00:29:10,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30890730] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:29:10,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527292867] [2024-10-24 00:29:10,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 00:29:10,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:10,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:10,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:29:10,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 00:29:10,344 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-24 00:29:10,344 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:29:10,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 00:29:10,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:10,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-24 00:29:11,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527292867] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:11,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:29:11,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 28 [2024-10-24 00:29:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437235751] [2024-10-24 00:29:11,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:11,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 00:29:11,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:11,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 00:29:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=426, Unknown=0, NotChecked=0, Total=756 [2024-10-24 00:29:11,016 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 28 states, 28 states have (on average 3.75) internal successors, (105), 28 states have internal predecessors, (105), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) [2024-10-24 00:29:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:11,644 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2024-10-24 00:29:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-24 00:29:11,644 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.75) internal successors, (105), 28 states have internal predecessors, (105), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) Word has length 87 [2024-10-24 00:29:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:11,645 INFO L225 Difference]: With dead ends: 189 [2024-10-24 00:29:11,646 INFO L226 Difference]: Without dead ends: 184 [2024-10-24 00:29:11,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=820, Invalid=1436, Unknown=0, NotChecked=0, Total=2256 [2024-10-24 00:29:11,647 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 77 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:11,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 138 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:29:11,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-24 00:29:11,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-10-24 00:29:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 138 states have (on average 1.0072463768115942) internal successors, (139), 138 states have internal predecessors, (139), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 00:29:11,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2024-10-24 00:29:11,671 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 87 [2024-10-24 00:29:11,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:11,671 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2024-10-24 00:29:11,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.75) internal successors, (105), 28 states have internal predecessors, (105), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) [2024-10-24 00:29:11,672 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2024-10-24 00:29:11,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-10-24 00:29:11,673 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:11,673 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2024-10-24 00:29:11,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 00:29:11,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:11,875 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:11,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:11,875 INFO L85 PathProgramCache]: Analyzing trace with hash 539512809, now seen corresponding path program 4 times [2024-10-24 00:29:11,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:11,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9447317] [2024-10-24 00:29:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:11,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 00:29:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 00:29:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 00:29:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 00:29:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 00:29:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 00:29:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:29:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 00:29:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 00:29:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 00:29:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 00:29:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-24 00:29:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-24 00:29:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-24 00:29:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-24 00:29:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-24 00:29:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-24 00:29:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-24 00:29:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-24 00:29:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-24 00:29:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-24 00:29:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-24 00:29:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-24 00:29:12,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:12,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9447317] [2024-10-24 00:29:12,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9447317] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:29:12,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229326873] [2024-10-24 00:29:12,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 00:29:12,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:12,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:12,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:29:12,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 00:29:13,703 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 00:29:13,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:29:13,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-24 00:29:13,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:14,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-24 00:29:14,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229326873] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:14,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:29:14,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 26] total 52 [2024-10-24 00:29:14,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035481846] [2024-10-24 00:29:14,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:14,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-24 00:29:14,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:14,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-24 00:29:14,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1230, Invalid=1422, Unknown=0, NotChecked=0, Total=2652 [2024-10-24 00:29:14,999 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand has 52 states, 52 states have (on average 4.096153846153846) internal successors, (213), 52 states have internal predecessors, (213), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2024-10-24 00:29:16,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:16,109 INFO L93 Difference]: Finished difference Result 381 states and 404 transitions. [2024-10-24 00:29:16,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-10-24 00:29:16,109 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.096153846153846) internal successors, (213), 52 states have internal predecessors, (213), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) Word has length 183 [2024-10-24 00:29:16,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:16,112 INFO L225 Difference]: With dead ends: 381 [2024-10-24 00:29:16,112 INFO L226 Difference]: Without dead ends: 376 [2024-10-24 00:29:16,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3364, Invalid=5756, Unknown=0, NotChecked=0, Total=9120 [2024-10-24 00:29:16,115 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 221 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:16,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 230 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:29:16,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-10-24 00:29:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-10-24 00:29:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 282 states have (on average 1.00354609929078) internal successors, (283), 282 states have internal predecessors, (283), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-24 00:29:16,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2024-10-24 00:29:16,163 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 183 [2024-10-24 00:29:16,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:16,164 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2024-10-24 00:29:16,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.096153846153846) internal successors, (213), 52 states have internal predecessors, (213), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2024-10-24 00:29:16,164 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2024-10-24 00:29:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-10-24 00:29:16,168 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:16,168 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1] [2024-10-24 00:29:16,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 00:29:16,372 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,SelfDestructingSolverStorable9 [2024-10-24 00:29:16,373 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:16,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:16,373 INFO L85 PathProgramCache]: Analyzing trace with hash -890061447, now seen corresponding path program 5 times [2024-10-24 00:29:16,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:16,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886765265] [2024-10-24 00:29:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:16,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 00:29:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 00:29:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 00:29:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 00:29:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 00:29:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 00:29:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:29:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 00:29:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 00:29:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 00:29:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 00:29:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-24 00:29:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-24 00:29:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-24 00:29:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-24 00:29:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-24 00:29:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-24 00:29:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-24 00:29:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-24 00:29:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-24 00:29:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-24 00:29:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-24 00:29:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-24 00:29:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-24 00:29:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-24 00:29:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-24 00:29:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:19,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-24 00:29:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-24 00:29:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-24 00:29:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-24 00:29:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-24 00:29:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-24 00:29:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-24 00:29:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-24 00:29:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-24 00:29:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-24 00:29:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-24 00:29:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-10-24 00:29:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-10-24 00:29:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-10-24 00:29:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-24 00:29:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-10-24 00:29:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-10-24 00:29:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-10-24 00:29:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-10-24 00:29:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-10-24 00:29:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:20,080 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 4232 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-10-24 00:29:20,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:20,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886765265] [2024-10-24 00:29:20,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886765265] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:29:20,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713029715] [2024-10-24 00:29:20,081 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 00:29:20,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:20,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:20,086 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:29:20,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 00:29:22,134 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-10-24 00:29:22,134 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:29:22,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-10-24 00:29:22,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:29:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:29:22,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:29:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 4232 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-10-24 00:29:25,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713029715] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:29:25,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:29:25,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 49, 50] total 100 [2024-10-24 00:29:25,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756259997] [2024-10-24 00:29:25,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:29:25,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-10-24 00:29:25,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:29:25,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-10-24 00:29:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4758, Invalid=5142, Unknown=0, NotChecked=0, Total=9900 [2024-10-24 00:29:25,412 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand has 100 states, 100 states have (on average 4.29) internal successors, (429), 100 states have internal predecessors, (429), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) [2024-10-24 00:29:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:29:29,715 INFO L93 Difference]: Finished difference Result 765 states and 812 transitions. [2024-10-24 00:29:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2024-10-24 00:29:29,716 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 4.29) internal successors, (429), 100 states have internal predecessors, (429), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) Word has length 375 [2024-10-24 00:29:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:29:29,720 INFO L225 Difference]: With dead ends: 765 [2024-10-24 00:29:29,720 INFO L226 Difference]: Without dead ends: 760 [2024-10-24 00:29:29,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5640 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=13636, Invalid=23036, Unknown=0, NotChecked=0, Total=36672 [2024-10-24 00:29:29,726 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 524 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 00:29:29,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 417 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 00:29:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-10-24 00:29:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2024-10-24 00:29:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 570 states have (on average 1.0017543859649123) internal successors, (571), 570 states have internal predecessors, (571), 95 states have call successors, (95), 95 states have call predecessors, (95), 94 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-10-24 00:29:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 760 transitions. [2024-10-24 00:29:29,798 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 760 transitions. Word has length 375 [2024-10-24 00:29:29,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:29:29,799 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 760 transitions. [2024-10-24 00:29:29,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 4.29) internal successors, (429), 100 states have internal predecessors, (429), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) [2024-10-24 00:29:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 760 transitions. [2024-10-24 00:29:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2024-10-24 00:29:29,809 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:29:29,809 INFO L215 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1] [2024-10-24 00:29:29,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 00:29:30,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:30,014 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:29:30,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:29:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1464919911, now seen corresponding path program 6 times [2024-10-24 00:29:30,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:29:30,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675512433] [2024-10-24 00:29:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:29:30,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:29:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 00:29:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 00:29:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 00:29:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 00:29:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 00:29:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 00:29:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:29:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 00:29:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 00:29:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 00:29:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 00:29:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-24 00:29:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-24 00:29:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-24 00:29:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-24 00:29:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-24 00:29:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-24 00:29:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-24 00:29:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-24 00:29:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-24 00:29:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-24 00:29:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-24 00:29:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-24 00:29:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-24 00:29:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-24 00:29:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-24 00:29:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-24 00:29:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-24 00:29:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-24 00:29:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-24 00:29:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-24 00:29:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-24 00:29:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-24 00:29:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-24 00:29:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-24 00:29:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-24 00:29:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-24 00:29:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-10-24 00:29:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-10-24 00:29:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-10-24 00:29:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-24 00:29:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-10-24 00:29:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-10-24 00:29:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-10-24 00:29:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-10-24 00:29:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-10-24 00:29:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-10-24 00:29:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-10-24 00:29:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-10-24 00:29:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-10-24 00:29:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-10-24 00:29:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-10-24 00:29:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-10-24 00:29:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-10-24 00:29:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-10-24 00:29:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2024-10-24 00:29:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-10-24 00:29:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-10-24 00:29:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2024-10-24 00:29:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2024-10-24 00:29:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2024-10-24 00:29:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2024-10-24 00:29:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2024-10-24 00:29:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2024-10-24 00:29:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2024-10-24 00:29:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2024-10-24 00:29:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2024-10-24 00:29:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2024-10-24 00:29:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2024-10-24 00:29:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2024-10-24 00:29:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2024-10-24 00:29:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2024-10-24 00:29:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2024-10-24 00:29:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2024-10-24 00:29:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2024-10-24 00:29:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2024-10-24 00:29:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2024-10-24 00:29:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2024-10-24 00:29:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2024-10-24 00:29:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2024-10-24 00:29:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2024-10-24 00:29:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2024-10-24 00:29:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2024-10-24 00:29:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2024-10-24 00:29:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2024-10-24 00:29:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2024-10-24 00:29:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2024-10-24 00:29:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2024-10-24 00:29:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2024-10-24 00:29:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2024-10-24 00:29:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2024-10-24 00:29:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2024-10-24 00:29:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2024-10-24 00:29:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 747 [2024-10-24 00:29:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:29:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 188 proven. 17672 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2024-10-24 00:29:41,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:29:41,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675512433] [2024-10-24 00:29:41,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675512433] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:29:41,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426451626] [2024-10-24 00:29:41,559 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 00:29:41,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:29:41,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:29:41,561 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) [2024-10-24 00:29:41,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process