./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.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 942b28ff7c0583b7db8395d2c315e70afc8fe68ba69d39faf867ac75d7628edb --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 19:58:03,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 19:58:03,455 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 19:58:03,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 19:58:03,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 19:58:03,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 19:58:03,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 19:58:03,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 19:58:03,491 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 19:58:03,492 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 19:58:03,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 19:58:03,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 19:58:03,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 19:58:03,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 19:58:03,498 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 19:58:03,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 19:58:03,499 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 19:58:03,499 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 19:58:03,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 19:58:03,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 19:58:03,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 19:58:03,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 19:58:03,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 19:58:03,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 19:58:03,501 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 19:58:03,501 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 19:58:03,501 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 19:58:03,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 19:58:03,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 19:58:03,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 19:58:03,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 19:58:03,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 19:58:03,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 19:58:03,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 19:58:03,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 19:58:03,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 19:58:03,506 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 19:58:03,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 19:58:03,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 19:58:03,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 19:58:03,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 19:58:03,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 19:58:03,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 942b28ff7c0583b7db8395d2c315e70afc8fe68ba69d39faf867ac75d7628edb [2024-11-11 19:58:03,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 19:58:03,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 19:58:03,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 19:58:03,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 19:58:03,822 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 19:58:03,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2024-11-11 19:58:05,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 19:58:05,396 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 19:58:05,397 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2024-11-11 19:58:05,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097d59c7d/8583931d4c3b4793af056fd16f4ddb2f/FLAG3837af6ac [2024-11-11 19:58:05,774 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097d59c7d/8583931d4c3b4793af056fd16f4ddb2f [2024-11-11 19:58:05,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 19:58:05,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 19:58:05,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 19:58:05,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 19:58:05,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 19:58:05,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 07:58:05" (1/1) ... [2024-11-11 19:58:05,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9a1e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:05, skipping insertion in model container [2024-11-11 19:58:05,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 07:58:05" (1/1) ... [2024-11-11 19:58:05,810 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 19:58:05,973 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2024-11-11 19:58:06,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 19:58:06,009 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 19:58:06,020 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2024-11-11 19:58:06,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 19:58:06,042 INFO L204 MainTranslator]: Completed translation [2024-11-11 19:58:06,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06 WrapperNode [2024-11-11 19:58:06,043 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 19:58:06,044 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 19:58:06,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 19:58:06,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 19:58:06,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,079 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2024-11-11 19:58:06,080 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 19:58:06,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 19:58:06,081 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 19:58:06,081 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 19:58:06,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,091 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,106 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]. [2024-11-11 19:58:06,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,112 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 19:58:06,115 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 19:58:06,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 19:58:06,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 19:58:06,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (1/1) ... [2024-11-11 19:58:06,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 19:58:06,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:06,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 19:58:06,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 19:58:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 19:58:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 19:58:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 19:58:06,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 19:58:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-11 19:58:06,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-11 19:58:06,332 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 19:58:06,334 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 19:58:06,497 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-11 19:58:06,498 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 19:58:06,513 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 19:58:06,514 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-11 19:58:06,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 07:58:06 BoogieIcfgContainer [2024-11-11 19:58:06,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 19:58:06,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 19:58:06,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 19:58:06,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 19:58:06,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 07:58:05" (1/3) ... [2024-11-11 19:58:06,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb797cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 07:58:06, skipping insertion in model container [2024-11-11 19:58:06,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:58:06" (2/3) ... [2024-11-11 19:58:06,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb797cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 07:58:06, skipping insertion in model container [2024-11-11 19:58:06,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 07:58:06" (3/3) ... [2024-11-11 19:58:06,526 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound2.c [2024-11-11 19:58:06,545 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 19:58:06,545 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 19:58:06,597 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 19:58:06,603 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;@4be35dd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 19:58:06,604 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 19:58:06,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-11 19:58:06,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-11 19:58:06,612 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:06,612 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:06,613 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:06,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2024-11-11 19:58:06,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:06,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262937997] [2024-11-11 19:58:06,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:06,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:58:06,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:06,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262937997] [2024-11-11 19:58:06,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262937997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:58:06,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:58:06,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 19:58:06,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682771624] [2024-11-11 19:58:06,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:58:06,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 19:58:06,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:06,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 19:58:06,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 19:58:06,792 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:58:06,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:06,810 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2024-11-11 19:58:06,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 19:58:06,812 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-11 19:58:06,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:06,817 INFO L225 Difference]: With dead ends: 51 [2024-11-11 19:58:06,817 INFO L226 Difference]: Without dead ends: 23 [2024-11-11 19:58:06,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 19:58:06,822 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:06,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 19:58:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-11 19:58:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-11 19:58:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 19:58:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2024-11-11 19:58:06,853 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2024-11-11 19:58:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:06,853 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2024-11-11 19:58:06,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:58:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2024-11-11 19:58:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-11 19:58:06,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:06,854 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:06,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 19:58:06,855 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:06,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:06,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2024-11-11 19:58:06,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:06,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284795674] [2024-11-11 19:58:06,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:06,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:58:07,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:07,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284795674] [2024-11-11 19:58:07,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284795674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:58:07,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:58:07,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 19:58:07,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846913647] [2024-11-11 19:58:07,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:58:07,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 19:58:07,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 19:58:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 19:58:07,108 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:58:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:07,284 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-11 19:58:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 19:58:07,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-11 19:58:07,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:07,286 INFO L225 Difference]: With dead ends: 29 [2024-11-11 19:58:07,286 INFO L226 Difference]: Without dead ends: 27 [2024-11-11 19:58:07,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-11 19:58:07,288 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:07,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:58:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-11 19:58:07,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-11 19:58:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 19:58:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2024-11-11 19:58:07,306 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2024-11-11 19:58:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:07,306 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2024-11-11 19:58:07,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 19:58:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2024-11-11 19:58:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-11 19:58:07,307 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:07,307 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:07,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 19:58:07,308 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:07,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2024-11-11 19:58:07,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:07,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325976210] [2024-11-11 19:58:07,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:07,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 19:58:07,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831414083] [2024-11-11 19:58:07,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:07,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:07,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:07,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:58:07,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 19:58:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:07,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-11 19:58:07,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:58:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:58:07,524 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 19:58:07,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:07,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325976210] [2024-11-11 19:58:07,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 19:58:07,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831414083] [2024-11-11 19:58:07,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831414083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:58:07,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:58:07,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 19:58:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134722517] [2024-11-11 19:58:07,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:58:07,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 19:58:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:07,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 19:58:07,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 19:58:07,529 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-11 19:58:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:07,615 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2024-11-11 19:58:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 19:58:07,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-11 19:58:07,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:07,618 INFO L225 Difference]: With dead ends: 46 [2024-11-11 19:58:07,619 INFO L226 Difference]: Without dead ends: 44 [2024-11-11 19:58:07,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-11 19:58:07,621 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:07,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 107 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:58:07,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-11 19:58:07,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2024-11-11 19:58:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-11 19:58:07,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2024-11-11 19:58:07,645 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2024-11-11 19:58:07,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:07,646 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2024-11-11 19:58:07,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-11 19:58:07,647 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2024-11-11 19:58:07,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-11 19:58:07,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:07,647 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:07,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 19:58:07,852 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 [2024-11-11 19:58:07,853 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:07,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2024-11-11 19:58:07,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:07,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536552756] [2024-11-11 19:58:07,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:07,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 19:58:07,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907327397] [2024-11-11 19:58:07,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:07,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:07,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:07,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:58:07,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 19:58:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:07,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-11 19:58:07,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:58:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 19:58:08,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 19:58:08,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:08,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536552756] [2024-11-11 19:58:08,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 19:58:08,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907327397] [2024-11-11 19:58:08,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907327397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:58:08,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:58:08,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 19:58:08,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439783018] [2024-11-11 19:58:08,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:58:08,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 19:58:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 19:58:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 19:58:08,019 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-11 19:58:08,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:08,087 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2024-11-11 19:58:08,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 19:58:08,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-11 19:58:08,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:08,088 INFO L225 Difference]: With dead ends: 50 [2024-11-11 19:58:08,088 INFO L226 Difference]: Without dead ends: 48 [2024-11-11 19:58:08,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-11 19:58:08,090 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:08,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 104 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 19:58:08,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-11 19:58:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2024-11-11 19:58:08,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-11 19:58:08,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2024-11-11 19:58:08,103 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 19 [2024-11-11 19:58:08,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:08,103 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2024-11-11 19:58:08,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-11 19:58:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2024-11-11 19:58:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-11 19:58:08,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:08,105 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:08,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 19:58:08,308 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 [2024-11-11 19:58:08,309 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:08,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:08,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2024-11-11 19:58:08,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:08,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342332105] [2024-11-11 19:58:08,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:08,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 19:58:08,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259950786] [2024-11-11 19:58:08,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:08,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:08,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:08,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:58:08,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 19:58:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:08,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-11 19:58:08,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:58:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 19:58:08,466 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 19:58:08,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:08,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342332105] [2024-11-11 19:58:08,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 19:58:08,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259950786] [2024-11-11 19:58:08,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259950786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:58:08,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:58:08,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 19:58:08,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70787388] [2024-11-11 19:58:08,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:58:08,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 19:58:08,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:08,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 19:58:08,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 19:58:08,468 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-11 19:58:08,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:08,558 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2024-11-11 19:58:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 19:58:08,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-11-11 19:58:08,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:08,560 INFO L225 Difference]: With dead ends: 58 [2024-11-11 19:58:08,560 INFO L226 Difference]: Without dead ends: 46 [2024-11-11 19:58:08,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-11 19:58:08,562 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:08,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 96 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:58:08,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-11 19:58:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-11 19:58:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-11 19:58:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-11-11 19:58:08,584 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2024-11-11 19:58:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:08,588 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-11-11 19:58:08,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-11 19:58:08,589 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-11-11 19:58:08,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-11 19:58:08,589 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:08,589 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:08,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-11 19:58:08,790 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 [2024-11-11 19:58:08,791 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:08,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:08,791 INFO L85 PathProgramCache]: Analyzing trace with hash -492592860, now seen corresponding path program 1 times [2024-11-11 19:58:08,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:08,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050628533] [2024-11-11 19:58:08,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:08,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 19:58:08,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371126884] [2024-11-11 19:58:08,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:08,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:08,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:08,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:58:08,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 19:58:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:08,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-11 19:58:08,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:58:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-11 19:58:09,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:58:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-11 19:58:09,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:09,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050628533] [2024-11-11 19:58:09,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 19:58:09,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371126884] [2024-11-11 19:58:09,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371126884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:58:09,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-11 19:58:09,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-11-11 19:58:09,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815168371] [2024-11-11 19:58:09,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-11 19:58:09,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-11 19:58:09,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-11 19:58:09,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-11 19:58:09,188 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-11 19:58:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:09,500 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2024-11-11 19:58:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 19:58:09,502 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 41 [2024-11-11 19:58:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:09,503 INFO L225 Difference]: With dead ends: 69 [2024-11-11 19:58:09,505 INFO L226 Difference]: Without dead ends: 67 [2024-11-11 19:58:09,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-11 19:58:09,506 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:09,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 153 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 19:58:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-11 19:58:09,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2024-11-11 19:58:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-11 19:58:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-11 19:58:09,539 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 41 [2024-11-11 19:58:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:09,540 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-11 19:58:09,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-11 19:58:09,541 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-11 19:58:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-11 19:58:09,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:09,543 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:09,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 19:58:09,744 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 [2024-11-11 19:58:09,744 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:09,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:09,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 2 times [2024-11-11 19:58:09,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:09,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058475035] [2024-11-11 19:58:09,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:09,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 19:58:09,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724783493] [2024-11-11 19:58:09,774 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 19:58:09,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:09,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:09,776 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:58:09,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 19:58:09,841 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 19:58:09,841 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:58:09,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-11 19:58:09,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:58:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-11 19:58:09,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:58:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-11 19:58:10,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:10,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058475035] [2024-11-11 19:58:10,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 19:58:10,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724783493] [2024-11-11 19:58:10,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724783493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:58:10,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-11 19:58:10,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-11-11 19:58:10,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127066188] [2024-11-11 19:58:10,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-11 19:58:10,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-11 19:58:10,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:10,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-11 19:58:10,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-11 19:58:10,139 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-11 19:58:14,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-11 19:58:14,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:14,251 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2024-11-11 19:58:14,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 19:58:14,254 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 46 [2024-11-11 19:58:14,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:14,255 INFO L225 Difference]: With dead ends: 81 [2024-11-11 19:58:14,255 INFO L226 Difference]: Without dead ends: 79 [2024-11-11 19:58:14,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-11 19:58:14,256 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:14,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 127 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-11 19:58:14,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-11 19:58:14,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-11-11 19:58:14,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 43 states have internal predecessors, (44), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-11 19:58:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2024-11-11 19:58:14,291 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 46 [2024-11-11 19:58:14,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:14,292 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2024-11-11 19:58:14,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-11 19:58:14,292 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2024-11-11 19:58:14,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-11 19:58:14,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:14,293 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:14,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 19:58:14,497 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 [2024-11-11 19:58:14,498 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:14,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:14,499 INFO L85 PathProgramCache]: Analyzing trace with hash 900098756, now seen corresponding path program 3 times [2024-11-11 19:58:14,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:14,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386860815] [2024-11-11 19:58:14,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:14,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 19:58:14,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434861482] [2024-11-11 19:58:14,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 19:58:14,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:14,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:14,542 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:58:14,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 19:58:14,607 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-11 19:58:14,607 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:58:14,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-11 19:58:14,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:58:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-11 19:58:14,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:58:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-11 19:58:14,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:14,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386860815] [2024-11-11 19:58:14,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 19:58:14,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434861482] [2024-11-11 19:58:14,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434861482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:58:14,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-11 19:58:14,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-11 19:58:14,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059446962] [2024-11-11 19:58:14,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-11 19:58:14,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-11 19:58:14,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:14,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-11 19:58:14,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-11 19:58:14,837 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-11 19:58:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:15,070 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2024-11-11 19:58:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 19:58:15,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 51 [2024-11-11 19:58:15,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:15,072 INFO L225 Difference]: With dead ends: 89 [2024-11-11 19:58:15,073 INFO L226 Difference]: Without dead ends: 77 [2024-11-11 19:58:15,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-11 19:58:15,074 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:15,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 204 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 19:58:15,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-11 19:58:15,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2024-11-11 19:58:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-11 19:58:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2024-11-11 19:58:15,100 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 51 [2024-11-11 19:58:15,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:15,101 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2024-11-11 19:58:15,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-11 19:58:15,102 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2024-11-11 19:58:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-11 19:58:15,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:15,104 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:15,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-11 19:58:15,305 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 [2024-11-11 19:58:15,305 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:15,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2024-11-11 19:58:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:15,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403738018] [2024-11-11 19:58:15,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:15,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 19:58:15,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432325497] [2024-11-11 19:58:15,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:15,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:15,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:15,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:58:15,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 19:58:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:15,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-11 19:58:15,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:58:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-11 19:58:15,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:58:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-11 19:58:15,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:16,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403738018] [2024-11-11 19:58:16,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 19:58:16,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432325497] [2024-11-11 19:58:16,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432325497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:58:16,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-11 19:58:16,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-11 19:58:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804165994] [2024-11-11 19:58:16,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-11 19:58:16,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-11 19:58:16,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:16,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-11 19:58:16,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-11 19:58:16,002 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-11 19:58:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:16,393 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2024-11-11 19:58:16,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 19:58:16,395 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 67 [2024-11-11 19:58:16,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:16,397 INFO L225 Difference]: With dead ends: 97 [2024-11-11 19:58:16,397 INFO L226 Difference]: Without dead ends: 95 [2024-11-11 19:58:16,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-11 19:58:16,398 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:16,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 19:58:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-11 19:58:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2024-11-11 19:58:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 54 states have internal predecessors, (56), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-11 19:58:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2024-11-11 19:58:16,445 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 67 [2024-11-11 19:58:16,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:16,448 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2024-11-11 19:58:16,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2024-11-11 19:58:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2024-11-11 19:58:16,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-11 19:58:16,449 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:16,449 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:16,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-11 19:58:16,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:16,650 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:16,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2024-11-11 19:58:16,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:16,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188117815] [2024-11-11 19:58:16,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:16,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 19:58:16,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150726123] [2024-11-11 19:58:16,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:16,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:16,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:16,688 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:58:16,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-11 19:58:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:16,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-11 19:58:16,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:58:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-11 19:58:17,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:58:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-11 19:58:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188117815] [2024-11-11 19:58:17,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 19:58:17,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150726123] [2024-11-11 19:58:17,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150726123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:58:17,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-11 19:58:17,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2024-11-11 19:58:17,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914373821] [2024-11-11 19:58:17,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-11 19:58:17,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 19:58:17,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:17,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 19:58:17,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-11 19:58:17,340 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-11 19:58:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:17,714 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2024-11-11 19:58:17,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 19:58:17,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 72 [2024-11-11 19:58:17,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:17,716 INFO L225 Difference]: With dead ends: 109 [2024-11-11 19:58:17,716 INFO L226 Difference]: Without dead ends: 89 [2024-11-11 19:58:17,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-11 19:58:17,717 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:17,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 173 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 19:58:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-11 19:58:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-11 19:58:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 23 states have call successors, (23), 13 states have call predecessors, (23), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-11 19:58:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2024-11-11 19:58:17,749 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 72 [2024-11-11 19:58:17,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:17,749 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2024-11-11 19:58:17,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-11 19:58:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2024-11-11 19:58:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-11 19:58:17,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:17,751 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:17,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-11 19:58:17,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-11 19:58:17,952 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:17,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 2 times [2024-11-11 19:58:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378610661] [2024-11-11 19:58:17,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 19:58:18,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943315408] [2024-11-11 19:58:18,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 19:58:18,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:18,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:18,015 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:58:18,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-11 19:58:18,093 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 19:58:18,094 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:58:18,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-11 19:58:18,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:58:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 86 proven. 58 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-11 19:58:18,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:58:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2024-11-11 19:58:19,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378610661] [2024-11-11 19:58:19,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 19:58:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943315408] [2024-11-11 19:58:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943315408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:58:19,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-11 19:58:19,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-11-11 19:58:19,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842439411] [2024-11-11 19:58:19,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-11 19:58:19,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-11 19:58:19,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-11 19:58:19,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-11 19:58:19,271 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-11 19:58:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:19,799 INFO L93 Difference]: Finished difference Result 111 states and 128 transitions. [2024-11-11 19:58:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-11 19:58:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) Word has length 121 [2024-11-11 19:58:19,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:19,803 INFO L225 Difference]: With dead ends: 111 [2024-11-11 19:58:19,803 INFO L226 Difference]: Without dead ends: 107 [2024-11-11 19:58:19,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-11 19:58:19,806 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:19,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 265 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 19:58:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-11 19:58:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-11-11 19:58:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 29 states have call successors, (29), 15 states have call predecessors, (29), 14 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-11 19:58:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2024-11-11 19:58:19,847 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 121 [2024-11-11 19:58:19,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:19,849 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2024-11-11 19:58:19,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-11 19:58:19,849 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2024-11-11 19:58:19,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-11 19:58:19,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:19,854 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:19,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-11 19:58:20,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:20,055 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:20,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 2 times [2024-11-11 19:58:20,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:20,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159572626] [2024-11-11 19:58:20,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:20,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 19:58:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894627818] [2024-11-11 19:58:20,092 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 19:58:20,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:20,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:20,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:58:20,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-11 19:58:20,173 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 19:58:20,173 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:58:20,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-11 19:58:20,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:58:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 44 proven. 42 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-11 19:58:20,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:58:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 44 proven. 42 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-11 19:58:21,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159572626] [2024-11-11 19:58:21,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 19:58:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894627818] [2024-11-11 19:58:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894627818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:58:21,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-11 19:58:21,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2024-11-11 19:58:21,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762249647] [2024-11-11 19:58:21,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-11 19:58:21,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-11 19:58:21,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:21,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-11 19:58:21,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-11 19:58:21,118 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) [2024-11-11 19:58:21,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:21,755 INFO L93 Difference]: Finished difference Result 152 states and 190 transitions. [2024-11-11 19:58:21,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-11 19:58:21,755 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) Word has length 126 [2024-11-11 19:58:21,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:21,757 INFO L225 Difference]: With dead ends: 152 [2024-11-11 19:58:21,757 INFO L226 Difference]: Without dead ends: 138 [2024-11-11 19:58:21,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2024-11-11 19:58:21,758 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 28 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:21,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 262 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 19:58:21,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-11 19:58:21,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-11 19:58:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 48 states have call successors, (48), 17 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-11 19:58:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 169 transitions. [2024-11-11 19:58:21,832 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 169 transitions. Word has length 126 [2024-11-11 19:58:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:21,832 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 169 transitions. [2024-11-11 19:58:21,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 10 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 10 states have call predecessors, (44), 10 states have call successors, (44) [2024-11-11 19:58:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 169 transitions. [2024-11-11 19:58:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-11 19:58:21,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:58:21,836 INFO L218 NwaCegarLoop]: trace histogram [48, 47, 47, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:58:21,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-11 19:58:22,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-11 19:58:22,037 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:58:22,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:58:22,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1106912589, now seen corresponding path program 3 times [2024-11-11 19:58:22,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:58:22,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752213504] [2024-11-11 19:58:22,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:58:22,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:58:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-11 19:58:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 19:58:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-11 19:58:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-11 19:58:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-11 19:58:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-11 19:58:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-11 19:58:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-11 19:58:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-11 19:58:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-11 19:58:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-11 19:58:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-11 19:58:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-11 19:58:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-11 19:58:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-11 19:58:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-11 19:58:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-11 19:58:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-11 19:58:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-11 19:58:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-11-11 19:58:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-11 19:58:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-11 19:58:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-11 19:58:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-11 19:58:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-11 19:58:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-11 19:58:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-11 19:58:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-11 19:58:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-11 19:58:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-11 19:58:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-11-11 19:58:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-11-11 19:58:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-11 19:58:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-11-11 19:58:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-11 19:58:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-11-11 19:58:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-11-11 19:58:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-11-11 19:58:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-11-11 19:58:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-11-11 19:58:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-11-11 19:58:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-11-11 19:58:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-11-11 19:58:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-11-11 19:58:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-11-11 19:58:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-11-11 19:58:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-11-11 19:58:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:58:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 297 proven. 49 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-11 19:58:22,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:58:22,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752213504] [2024-11-11 19:58:22,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752213504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:58:22,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865674673] [2024-11-11 19:58:22,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 19:58:22,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:58:22,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:58:22,770 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:58:22,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-11 19:58:22,849 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-11 19:58:22,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:58:22,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-11 19:58:22,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:58:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 520 proven. 33 refuted. 0 times theorem prover too weak. 4117 trivial. 0 not checked. [2024-11-11 19:58:23,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:58:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 388 proven. 39 refuted. 0 times theorem prover too weak. 4243 trivial. 0 not checked. [2024-11-11 19:58:24,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865674673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:58:24,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:58:24,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 28 [2024-11-11 19:58:24,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788804199] [2024-11-11 19:58:24,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:58:24,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-11 19:58:24,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:58:24,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-11 19:58:24,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-11-11 19:58:24,477 INFO L87 Difference]: Start difference. First operand 138 states and 169 transitions. Second operand has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 23 states have internal predecessors, (53), 17 states have call successors, (74), 4 states have call predecessors, (74), 2 states have return successors, (73), 17 states have call predecessors, (73), 17 states have call successors, (73) [2024-11-11 19:58:24,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:58:24,827 INFO L93 Difference]: Finished difference Result 146 states and 175 transitions. [2024-11-11 19:58:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 19:58:24,828 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 23 states have internal predecessors, (53), 17 states have call successors, (74), 4 states have call predecessors, (74), 2 states have return successors, (73), 17 states have call predecessors, (73), 17 states have call successors, (73) Word has length 261 [2024-11-11 19:58:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:58:24,829 INFO L225 Difference]: With dead ends: 146 [2024-11-11 19:58:24,829 INFO L226 Difference]: Without dead ends: 0 [2024-11-11 19:58:24,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2024-11-11 19:58:24,830 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 19:58:24,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 318 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 19:58:24,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-11 19:58:24,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-11 19:58:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-11 19:58:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-11 19:58:24,832 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 261 [2024-11-11 19:58:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:58:24,832 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-11 19:58:24,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 23 states have internal predecessors, (53), 17 states have call successors, (74), 4 states have call predecessors, (74), 2 states have return successors, (73), 17 states have call predecessors, (73), 17 states have call successors, (73) [2024-11-11 19:58:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-11 19:58:24,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-11 19:58:24,834 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-11 19:58:24,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-11 19:58:25,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-11 19:58:25,041 INFO L421 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1] [2024-11-11 19:58:25,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-11 19:58:26,715 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-11 19:58:26,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 07:58:26 BoogieIcfgContainer [2024-11-11 19:58:26,737 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-11 19:58:26,738 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-11 19:58:26,738 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-11 19:58:26,738 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-11 19:58:26,739 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 07:58:06" (3/4) ... [2024-11-11 19:58:26,741 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-11 19:58:26,745 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-11 19:58:26,748 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-11 19:58:26,749 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-11 19:58:26,749 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-11 19:58:26,750 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-11 19:58:26,842 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-11 19:58:26,843 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-11 19:58:26,843 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-11 19:58:26,843 INFO L158 Benchmark]: Toolchain (without parser) took 21066.63ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 105.8MB in the beginning and 177.1MB in the end (delta: -71.3MB). Peak memory consumption was 908.2kB. Max. memory is 16.1GB. [2024-11-11 19:58:26,844 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 19:58:26,844 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.28ms. Allocated memory is still 159.4MB. Free memory was 105.3MB in the beginning and 92.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-11 19:58:26,844 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.04ms. Allocated memory is still 159.4MB. Free memory was 92.6MB in the beginning and 91.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-11 19:58:26,844 INFO L158 Benchmark]: Boogie Preprocessor took 33.44ms. Allocated memory is still 159.4MB. Free memory was 91.1MB in the beginning and 89.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-11 19:58:26,844 INFO L158 Benchmark]: RCFGBuilder took 399.71ms. Allocated memory is still 159.4MB. Free memory was 89.0MB in the beginning and 122.0MB in the end (delta: -33.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-11 19:58:26,845 INFO L158 Benchmark]: TraceAbstraction took 20220.40ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 121.2MB in the beginning and 182.3MB in the end (delta: -61.1MB). Peak memory consumption was 115.8MB. Max. memory is 16.1GB. [2024-11-11 19:58:26,845 INFO L158 Benchmark]: Witness Printer took 105.04ms. Allocated memory is still 232.8MB. Free memory was 182.3MB in the beginning and 177.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-11 19:58:26,846 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.28ms. Allocated memory is still 159.4MB. Free memory was 105.3MB in the beginning and 92.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.04ms. Allocated memory is still 159.4MB. Free memory was 92.6MB in the beginning and 91.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.44ms. Allocated memory is still 159.4MB. Free memory was 91.1MB in the beginning and 89.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 399.71ms. Allocated memory is still 159.4MB. Free memory was 89.0MB in the beginning and 122.0MB in the end (delta: -33.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 20220.40ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 121.2MB in the beginning and 182.3MB in the end (delta: -61.1MB). Peak memory consumption was 115.8MB. Max. memory is 16.1GB. * Witness Printer took 105.04ms. Allocated memory is still 232.8MB. Free memory was 182.3MB in the beginning and 177.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.5s, OverallIterations: 13, TraceHistogramMax: 48, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 2049 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1653 mSDsCounter, 333 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1639 IncrementalHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 333 mSolverCounterUnsat, 396 mSDtfsCounter, 1639 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1763 GetRequests, 1601 SyntacticMatches, 5 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=12, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 47 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 1702 NumberOfCodeBlocks, 1465 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1884 ConstructedInterpolants, 0 QuantifiedInterpolants, 7089 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1496 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 19215/19614 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((((z == 24) && (3 == n)) && (2 == a)) && (y == 37)) && (x == 27)) || ((((((a <= 2) && (7 == y)) && (z == 12)) && (x == 1)) && (n == 1)) && (0 <= a))) || ((((((2 == n) && (a <= 2)) && (1 <= a)) && (x == 8)) && (19 == y)) && (z == 18))) || ((((((a <= 2) && (y == 1)) && (n == 0)) && (0 <= a)) && (x == 0)) && (6 == z))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-11 19:58:26,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE