./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/nested_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-acceleration/nested_1-2.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 8828f6ff39cd2bcfba4fe3d04f0119d60137bcad91eabef2e2b840cbd0802b98 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:15:36,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:15:36,801 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:15:36,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:15:36,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:15:36,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:15:36,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:15:36,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:15:36,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:15:36,835 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:15:36,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:15:36,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:15:36,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:15:36,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:15:36,837 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:15:36,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:15:36,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:15:36,838 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:15:36,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:15:36,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:15:36,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:15:36,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:15:36,844 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:15:36,844 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:15:36,844 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:15:36,844 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:15:36,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:15:36,845 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:15:36,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:15:36,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:15:36,846 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:15:36,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:15:36,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:15:36,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:15:36,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:15:36,847 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:15:36,847 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:15:36,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:15:36,848 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:15:36,848 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:15:36,848 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:15:36,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:15:36,850 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8828f6ff39cd2bcfba4fe3d04f0119d60137bcad91eabef2e2b840cbd0802b98 [2024-11-18 13:15:37,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:15:37,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:15:37,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:15:37,113 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:15:37,113 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:15:37,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/nested_1-2.c [2024-11-18 13:15:38,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:15:38,698 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:15:38,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/nested_1-2.c [2024-11-18 13:15:38,706 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcddd67ba/1251c189318049baae3500f96120ade8/FLAG5e8d0b4e5 [2024-11-18 13:15:38,717 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcddd67ba/1251c189318049baae3500f96120ade8 [2024-11-18 13:15:38,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:15:38,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:15:38,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:15:38,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:15:38,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:15:38,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:38,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734f2e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38, skipping insertion in model container [2024-11-18 13:15:38,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:38,746 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:15:38,916 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/nested_1-2.c[322,335] [2024-11-18 13:15:38,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:15:38,933 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:15:38,943 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/nested_1-2.c[322,335] [2024-11-18 13:15:38,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:15:38,959 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:15:38,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38 WrapperNode [2024-11-18 13:15:38,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:15:38,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:15:38,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:15:38,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:15:38,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:38,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:38,985 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2024-11-18 13:15:38,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:15:38,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:15:38,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:15:38,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:15:38,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:38,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:38,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:39,003 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 13:15:39,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:39,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:39,005 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:39,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:39,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:39,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:39,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:15:39,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:15:39,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:15:39,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:15:39,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (1/1) ... [2024-11-18 13:15:39,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:15:39,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:39,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 13:15:39,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 13:15:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:15:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:15:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:15:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:15:39,170 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:15:39,174 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:15:39,292 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-18 13:15:39,293 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:15:39,307 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:15:39,307 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 13:15:39,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:15:39 BoogieIcfgContainer [2024-11-18 13:15:39,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:15:39,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:15:39,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:15:39,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:15:39,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:15:38" (1/3) ... [2024-11-18 13:15:39,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7650bb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:15:39, skipping insertion in model container [2024-11-18 13:15:39,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:15:38" (2/3) ... [2024-11-18 13:15:39,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7650bb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:15:39, skipping insertion in model container [2024-11-18 13:15:39,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:15:39" (3/3) ... [2024-11-18 13:15:39,317 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_1-2.c [2024-11-18 13:15:39,334 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:15:39,335 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:15:39,403 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:15:39,409 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;@6b665205, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:15:39,412 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:15:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:39,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-18 13:15:39,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:39,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-18 13:15:39,423 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:39,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:39,428 INFO L85 PathProgramCache]: Analyzing trace with hash 889646744, now seen corresponding path program 1 times [2024-11-18 13:15:39,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:39,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649011435] [2024-11-18 13:15:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:39,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:15:39,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:39,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649011435] [2024-11-18 13:15:39,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649011435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:15:39,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:15:39,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:15:39,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563843231] [2024-11-18 13:15:39,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:15:39,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:15:39,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:39,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:15:39,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:15:39,778 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:39,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:39,810 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2024-11-18 13:15:39,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:15:39,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-18 13:15:39,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:39,821 INFO L225 Difference]: With dead ends: 27 [2024-11-18 13:15:39,821 INFO L226 Difference]: Without dead ends: 12 [2024-11-18 13:15:39,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:15:39,826 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:39,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 20 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:15:39,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-18 13:15:39,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2024-11-18 13:15:39,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-11-18 13:15:39,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2024-11-18 13:15:39,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:39,854 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-11-18 13:15:39,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:39,855 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-11-18 13:15:39,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-18 13:15:39,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:39,856 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:39,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:15:39,856 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:39,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:39,857 INFO L85 PathProgramCache]: Analyzing trace with hash 704531011, now seen corresponding path program 1 times [2024-11-18 13:15:39,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:39,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306973677] [2024-11-18 13:15:39,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:39,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:15:39,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:39,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306973677] [2024-11-18 13:15:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306973677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:15:39,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:15:39,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:15:39,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797771964] [2024-11-18 13:15:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:15:39,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:15:39,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:39,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:15:39,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:15:39,971 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:39,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:39,980 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2024-11-18 13:15:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:15:39,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-18 13:15:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:39,981 INFO L225 Difference]: With dead ends: 18 [2024-11-18 13:15:39,981 INFO L226 Difference]: Without dead ends: 11 [2024-11-18 13:15:39,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:15:39,984 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:39,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:15:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-18 13:15:39,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-18 13:15:39,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2024-11-18 13:15:39,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2024-11-18 13:15:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:39,992 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-18 13:15:39,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2024-11-18 13:15:39,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:15:39,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:39,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:39,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:15:39,995 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:39,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:39,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1982141191, now seen corresponding path program 1 times [2024-11-18 13:15:39,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:39,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578314615] [2024-11-18 13:15:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:40,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:15:40,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:40,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578314615] [2024-11-18 13:15:40,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578314615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:40,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265654085] [2024-11-18 13:15:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:40,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:40,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:40,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:15:40,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:15:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:40,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:15:40,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:15:40,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:15:40,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265654085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:40,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:40,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 13:15:40,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966748369] [2024-11-18 13:15:40,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:40,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:15:40,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:40,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:15:40,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:15:40,284 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:40,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:40,319 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2024-11-18 13:15:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:15:40,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 13:15:40,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:40,321 INFO L225 Difference]: With dead ends: 22 [2024-11-18 13:15:40,321 INFO L226 Difference]: Without dead ends: 14 [2024-11-18 13:15:40,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:15:40,322 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:40,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:15:40,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-18 13:15:40,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-18 13:15:40,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-18 13:15:40,327 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2024-11-18 13:15:40,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:40,327 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-18 13:15:40,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:40,328 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-18 13:15:40,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 13:15:40,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:40,329 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:40,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:15:40,532 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 [2024-11-18 13:15:40,533 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:40,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:40,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1640782659, now seen corresponding path program 2 times [2024-11-18 13:15:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:40,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455139515] [2024-11-18 13:15:40,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:15:40,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:40,561 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:15:40,561 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:15:40,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:40,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455139515] [2024-11-18 13:15:40,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455139515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:40,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072300863] [2024-11-18 13:15:40,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:15:40,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:40,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:40,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:15:40,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:15:40,689 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:15:40,690 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:40,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 13:15:40,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:15:40,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:15:40,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072300863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:40,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:40,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-11-18 13:15:40,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259773278] [2024-11-18 13:15:40,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:40,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 13:15:40,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:40,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 13:15:40,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:15:40,906 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:40,991 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-11-18 13:15:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:15:40,993 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-18 13:15:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:40,993 INFO L225 Difference]: With dead ends: 39 [2024-11-18 13:15:40,994 INFO L226 Difference]: Without dead ends: 35 [2024-11-18 13:15:40,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:15:40,995 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:40,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 26 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:15:40,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-18 13:15:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-18 13:15:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-18 13:15:41,013 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 13 [2024-11-18 13:15:41,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:41,013 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-18 13:15:41,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-18 13:15:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 13:15:41,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:41,015 INFO L215 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:41,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:15:41,215 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 [2024-11-18 13:15:41,216 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:41,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1552976344, now seen corresponding path program 3 times [2024-11-18 13:15:41,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:41,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626318051] [2024-11-18 13:15:41,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:15:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:41,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 13:15:41,256 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 82 proven. 10 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-18 13:15:41,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:41,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626318051] [2024-11-18 13:15:41,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626318051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:41,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462162647] [2024-11-18 13:15:41,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:15:41,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:41,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:41,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:15:41,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:15:41,462 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 13:15:41,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:41,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 13:15:41,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 62 proven. 76 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-18 13:15:41,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 82 proven. 10 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-18 13:15:41,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462162647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:41,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:41,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 13:15:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794567337] [2024-11-18 13:15:41,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:41,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 13:15:41,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 13:15:41,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:15:41,626 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:41,814 INFO L93 Difference]: Finished difference Result 86 states and 117 transitions. [2024-11-18 13:15:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:15:41,815 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-18 13:15:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:41,816 INFO L225 Difference]: With dead ends: 86 [2024-11-18 13:15:41,816 INFO L226 Difference]: Without dead ends: 59 [2024-11-18 13:15:41,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:15:41,818 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:41,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:15:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-18 13:15:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-18 13:15:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2024-11-18 13:15:41,832 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 34 [2024-11-18 13:15:41,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:41,833 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2024-11-18 13:15:41,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:41,833 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2024-11-18 13:15:41,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 13:15:41,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:41,836 INFO L215 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:41,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 13:15:42,036 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 [2024-11-18 13:15:42,037 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:42,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:42,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1228631464, now seen corresponding path program 4 times [2024-11-18 13:15:42,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:42,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898588427] [2024-11-18 13:15:42,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:15:42,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:42,050 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:15:42,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-18 13:15:42,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:42,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898588427] [2024-11-18 13:15:42,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898588427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:42,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270528199] [2024-11-18 13:15:42,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:15:42,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:42,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:42,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:15:42,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:15:42,280 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:15:42,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:42,281 WARN L253 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 13:15:42,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-18 13:15:42,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2024-11-18 13:15:42,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270528199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:42,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:42,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 12 [2024-11-18 13:15:42,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315121787] [2024-11-18 13:15:42,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:42,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 13:15:42,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:42,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 13:15:42,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:15:42,552 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:42,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:42,664 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2024-11-18 13:15:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:15:42,665 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-18 13:15:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:42,666 INFO L225 Difference]: With dead ends: 103 [2024-11-18 13:15:42,666 INFO L226 Difference]: Without dead ends: 97 [2024-11-18 13:15:42,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:15:42,667 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:42,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:15:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-18 13:15:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 72. [2024-11-18 13:15:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0845070422535212) internal successors, (77), 71 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:42,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2024-11-18 13:15:42,689 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 58 [2024-11-18 13:15:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:42,690 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2024-11-18 13:15:42,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2024-11-18 13:15:42,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 13:15:42,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:42,691 INFO L215 NwaCegarLoop]: trace histogram [50, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:42,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 13:15:42,892 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 [2024-11-18 13:15:42,892 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:42,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:42,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1313015549, now seen corresponding path program 5 times [2024-11-18 13:15:42,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:42,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314932908] [2024-11-18 13:15:42,893 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:15:42,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:42,990 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-11-18 13:15:42,990 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-18 13:15:43,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:43,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314932908] [2024-11-18 13:15:43,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314932908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563652127] [2024-11-18 13:15:43,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:15:43,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:43,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:43,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:15:43,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:15:43,451 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-11-18 13:15:43,451 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:43,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 13:15:43,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 1280 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-11-18 13:15:43,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 30 proven. 1250 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-11-18 13:15:44,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563652127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:44,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:44,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 14] total 27 [2024-11-18 13:15:44,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947798365] [2024-11-18 13:15:44,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:44,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 13:15:44,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:44,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 13:15:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=471, Unknown=0, NotChecked=0, Total=702 [2024-11-18 13:15:44,074 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:44,498 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2024-11-18 13:15:44,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 13:15:44,498 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-18 13:15:44,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:44,500 INFO L225 Difference]: With dead ends: 180 [2024-11-18 13:15:44,500 INFO L226 Difference]: Without dead ends: 176 [2024-11-18 13:15:44,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=638, Unknown=0, NotChecked=0, Total=992 [2024-11-18 13:15:44,502 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 39 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:44,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 118 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:15:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-18 13:15:44,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-18 13:15:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.08) internal successors, (189), 175 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 189 transitions. [2024-11-18 13:15:44,541 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 189 transitions. Word has length 71 [2024-11-18 13:15:44,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:44,541 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 189 transitions. [2024-11-18 13:15:44,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:44,542 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 189 transitions. [2024-11-18 13:15:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 13:15:44,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:44,547 INFO L215 NwaCegarLoop]: trace histogram [130, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:44,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 13:15:44,747 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 [2024-11-18 13:15:44,748 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:44,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash 869335427, now seen corresponding path program 6 times [2024-11-18 13:15:44,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:44,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384850090] [2024-11-18 13:15:44,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:15:44,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:44,962 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2024-11-18 13:15:44,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10322 backedges. 0 proven. 9607 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-18 13:15:45,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:45,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384850090] [2024-11-18 13:15:45,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384850090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:45,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843544245] [2024-11-18 13:15:45,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:15:45,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:45,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:45,691 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:15:45,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:15:46,368 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2024-11-18 13:15:46,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:46,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 13:15:46,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10322 backedges. 0 proven. 9607 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-18 13:15:46,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10322 backedges. 0 proven. 9607 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-18 13:15:48,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843544245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:48,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:48,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 18] total 33 [2024-11-18 13:15:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847893521] [2024-11-18 13:15:48,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:48,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 13:15:48,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:48,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 13:15:48,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=755, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 13:15:48,056 INFO L87 Difference]: Start difference. First operand 176 states and 189 transitions. Second operand has 33 states, 33 states have (on average 3.515151515151515) internal successors, (116), 33 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:16:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:16:00,699 INFO L93 Difference]: Finished difference Result 401 states and 438 transitions. [2024-11-18 13:16:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-18 13:16:00,700 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.515151515151515) internal successors, (116), 33 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2024-11-18 13:16:00,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:16:00,703 INFO L225 Difference]: With dead ends: 401 [2024-11-18 13:16:00,703 INFO L226 Difference]: Without dead ends: 397 [2024-11-18 13:16:00,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=741, Invalid=1421, Unknown=0, NotChecked=0, Total=2162 [2024-11-18 13:16:00,706 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 48 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:16:00,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 416 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:16:00,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-18 13:16:00,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 384. [2024-11-18 13:16:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.0783289817232375) internal successors, (413), 383 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:16:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 413 transitions. [2024-11-18 13:16:00,793 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 413 transitions. Word has length 175 [2024-11-18 13:16:00,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:16:00,794 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 413 transitions. [2024-11-18 13:16:00,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.515151515151515) internal successors, (116), 33 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:16:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 413 transitions. [2024-11-18 13:16:00,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-18 13:16:00,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:16:00,806 INFO L215 NwaCegarLoop]: trace histogram [290, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2024-11-18 13:16:00,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 13:16:01,009 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 [2024-11-18 13:16:01,010 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:16:01,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:16:01,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1690987901, now seen corresponding path program 7 times [2024-11-18 13:16:01,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:16:01,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082352242] [2024-11-18 13:16:01,011 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:16:01,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:16:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:16:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 51562 backedges. 0 proven. 49967 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2024-11-18 13:16:03,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:16:03,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082352242] [2024-11-18 13:16:03,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082352242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:16:03,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204090821] [2024-11-18 13:16:03,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:16:03,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:16:03,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:16:03,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:16:03,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:16:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:16:03,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-18 13:16:03,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:16:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 51562 backedges. 0 proven. 49967 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2024-11-18 13:16:04,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:16:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 51562 backedges. 0 proven. 49967 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2024-11-18 13:16:06,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204090821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:16:06,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:16:06,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2024-11-18 13:16:06,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998331988] [2024-11-18 13:16:06,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:16:06,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-18 13:16:06,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:16:06,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-18 13:16:06,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=2823, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 13:16:06,356 INFO L87 Difference]: Start difference. First operand 384 states and 413 transitions. Second operand has 63 states, 63 states have (on average 3.8412698412698414) internal successors, (242), 63 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)