./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum03-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/sum03-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe7be15075ce01a2506fca5f00f42200a3ccb6fbddb1902e9169c6afecb0edfe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:13:42,003 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:13:42,058 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:13:42,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:13:42,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:13:42,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:13:42,084 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:13:42,084 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:13:42,085 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:13:42,085 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:13:42,085 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:13:42,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:13:42,086 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:13:42,087 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:13:42,087 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:13:42,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:13:42,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:13:42,093 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:13:42,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:13:42,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:13:42,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:13:42,094 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:13:42,094 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:13:42,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:13:42,095 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:13:42,095 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:13:42,096 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:13:42,096 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:13:42,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:13:42,097 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:13:42,097 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:13:42,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:13:42,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:13:42,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:13:42,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:13:42,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:13:42,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:13:42,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:13:42,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:13:42,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:13:42,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:13:42,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:13:42,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe7be15075ce01a2506fca5f00f42200a3ccb6fbddb1902e9169c6afecb0edfe [2024-11-18 13:13:42,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:13:42,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:13:42,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:13:42,381 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:13:42,381 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:13:42,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum03-1.i [2024-11-18 13:13:43,836 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:13:44,057 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:13:44,058 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum03-1.i [2024-11-18 13:13:44,064 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e0508c5/9719787a37014486a2f34236156686f4/FLAGa442d0aec [2024-11-18 13:13:44,077 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e0508c5/9719787a37014486a2f34236156686f4 [2024-11-18 13:13:44,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:13:44,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:13:44,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:13:44,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:13:44,089 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:13:44,090 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89708de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44, skipping insertion in model container [2024-11-18 13:13:44,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:13:44,275 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/loops/sum03-1.i[807,820] [2024-11-18 13:13:44,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:13:44,301 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:13:44,313 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/loops/sum03-1.i[807,820] [2024-11-18 13:13:44,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:13:44,336 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:13:44,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44 WrapperNode [2024-11-18 13:13:44,337 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:13:44,338 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:13:44,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:13:44,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:13:44,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,367 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2024-11-18 13:13:44,368 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:13:44,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:13:44,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:13:44,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:13:44,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,379 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,390 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 13:13:44,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,401 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:13:44,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:13:44,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:13:44,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:13:44,408 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (1/1) ... [2024-11-18 13:13:44,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:13:44,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:13:44,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 13:13:44,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 13:13:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:13:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:13:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:13:44,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:13:44,540 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:13:44,542 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:13:44,701 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-18 13:13:44,701 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:13:44,711 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:13:44,712 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:13:44,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:13:44 BoogieIcfgContainer [2024-11-18 13:13:44,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:13:44,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:13:44,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:13:44,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:13:44,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:13:44" (1/3) ... [2024-11-18 13:13:44,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19579f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:13:44, skipping insertion in model container [2024-11-18 13:13:44,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:13:44" (2/3) ... [2024-11-18 13:13:44,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19579f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:13:44, skipping insertion in model container [2024-11-18 13:13:44,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:13:44" (3/3) ... [2024-11-18 13:13:44,722 INFO L112 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2024-11-18 13:13:44,738 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:13:44,738 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:13:44,789 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:13:44,795 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;@648a71ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:13:44,795 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:13:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:44,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-18 13:13:44,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:13:44,810 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:13:44,811 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:13:44,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:13:44,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1810721996, now seen corresponding path program 1 times [2024-11-18 13:13:44,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:13:44,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954564750] [2024-11-18 13:13:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:13:44,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:13:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:13:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:13:45,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:13:45,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954564750] [2024-11-18 13:13:45,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954564750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:13:45,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:13:45,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:13:45,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418654617] [2024-11-18 13:13:45,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:13:45,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:13:45,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:13:45,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:13:45,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:13:45,171 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:13:45,222 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2024-11-18 13:13:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:13:45,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-18 13:13:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:13:45,234 INFO L225 Difference]: With dead ends: 24 [2024-11-18 13:13:45,235 INFO L226 Difference]: Without dead ends: 14 [2024-11-18 13:13:45,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:13:45,246 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:13:45,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:13:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-18 13:13:45,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-18 13:13:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-18 13:13:45,280 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2024-11-18 13:13:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:13:45,280 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-18 13:13:45,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:45,282 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-18 13:13:45,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-18 13:13:45,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:13:45,282 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:13:45,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:13:45,283 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:13:45,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:13:45,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1810662414, now seen corresponding path program 1 times [2024-11-18 13:13:45,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:13:45,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308755512] [2024-11-18 13:13:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:13:45,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:13:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:13:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:13:45,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:13:45,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308755512] [2024-11-18 13:13:45,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308755512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:13:45,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:13:45,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:13:45,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901409584] [2024-11-18 13:13:45,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:13:45,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:13:45,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:13:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:13:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:13:45,549 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:13:45,583 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-11-18 13:13:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:13:45,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-18 13:13:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:13:45,585 INFO L225 Difference]: With dead ends: 25 [2024-11-18 13:13:45,586 INFO L226 Difference]: Without dead ends: 13 [2024-11-18 13:13:45,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:13:45,588 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:13:45,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:13:45,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-18 13:13:45,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-18 13:13:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-11-18 13:13:45,595 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2024-11-18 13:13:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:13:45,596 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-11-18 13:13:45,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:45,597 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-11-18 13:13:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 13:13:45,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:13:45,597 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:13:45,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:13:45,598 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:13:45,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:13:45,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1836540064, now seen corresponding path program 1 times [2024-11-18 13:13:45,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:13:45,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216854193] [2024-11-18 13:13:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:13:45,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:13:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:13:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:13:45,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:13:45,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216854193] [2024-11-18 13:13:45,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216854193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:13:45,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55929691] [2024-11-18 13:13:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:13:45,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:13:45,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:13:45,745 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:13:45,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:13:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:13:45,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:13:45,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:13:45,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:13:45,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:13:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:13:45,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55929691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:13:45,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:13:45,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 13:13:45,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175635594] [2024-11-18 13:13:45,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:13:45,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:13:45,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:13:45,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:13:45,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:13:45,931 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:13:45,985 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-18 13:13:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:13:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-18 13:13:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:13:45,987 INFO L225 Difference]: With dead ends: 38 [2024-11-18 13:13:45,989 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 13:13:45,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:13:45,990 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:13:45,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:13:45,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 13:13:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2024-11-18 13:13:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-18 13:13:46,000 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 12 [2024-11-18 13:13:46,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:13:46,001 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-18 13:13:46,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-18 13:13:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 13:13:46,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:13:46,002 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-18 13:13:46,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:13:46,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:13:46,207 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:13:46,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:13:46,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1836599646, now seen corresponding path program 1 times [2024-11-18 13:13:46,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:13:46,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332713406] [2024-11-18 13:13:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:13:46,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:13:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:13:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:13:46,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:13:46,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332713406] [2024-11-18 13:13:46,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332713406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:13:46,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137878863] [2024-11-18 13:13:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:13:46,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:13:46,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:13:46,488 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:13:46,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:13:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:13:46,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 13:13:46,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:13:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:13:46,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:13:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:13:46,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137878863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:13:46,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:13:46,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2024-11-18 13:13:46,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127137450] [2024-11-18 13:13:46,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:13:46,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 13:13:46,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:13:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 13:13:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:13:46,935 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:13:47,250 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2024-11-18 13:13:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 13:13:47,251 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-18 13:13:47,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:13:47,252 INFO L225 Difference]: With dead ends: 53 [2024-11-18 13:13:47,252 INFO L226 Difference]: Without dead ends: 51 [2024-11-18 13:13:47,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-11-18 13:13:47,255 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:13:47,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:13:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-18 13:13:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2024-11-18 13:13:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-18 13:13:47,265 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 12 [2024-11-18 13:13:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:13:47,266 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-18 13:13:47,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-18 13:13:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-18 13:13:47,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:13:47,267 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-18 13:13:47,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:13:47,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 13:13:47,468 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:13:47,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:13:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1722497588, now seen corresponding path program 2 times [2024-11-18 13:13:47,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:13:47,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576669252] [2024-11-18 13:13:47,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:13:47,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:13:47,485 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:13:47,486 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:13:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:13:47,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:13:47,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576669252] [2024-11-18 13:13:47,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576669252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:13:47,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078683550] [2024-11-18 13:13:47,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:13:47,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:13:47,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:13:47,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:13:47,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:13:47,637 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:13:47,638 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:13:47,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 13:13:47,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:13:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:13:47,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:13:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:13:47,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078683550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:13:47,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:13:47,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 13:13:47,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947542452] [2024-11-18 13:13:47,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:13:47,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 13:13:47,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:13:47,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 13:13:47,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:13:47,840 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:48,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:13:48,024 INFO L93 Difference]: Finished difference Result 99 states and 118 transitions. [2024-11-18 13:13:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:13:48,025 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-18 13:13:48,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:13:48,026 INFO L225 Difference]: With dead ends: 99 [2024-11-18 13:13:48,026 INFO L226 Difference]: Without dead ends: 77 [2024-11-18 13:13:48,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:13:48,027 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:13:48,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 106 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:13:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-18 13:13:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2024-11-18 13:13:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 75 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2024-11-18 13:13:48,038 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 27 [2024-11-18 13:13:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:13:48,041 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2024-11-18 13:13:48,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:13:48,041 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2024-11-18 13:13:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 13:13:48,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:13:48,043 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1] [2024-11-18 13:13:48,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 13:13:48,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:13:48,244 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:13:48,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:13:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash -348415156, now seen corresponding path program 3 times [2024-11-18 13:13:48,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:13:48,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942315705] [2024-11-18 13:13:48,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:13:48,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:13:48,411 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-18 13:13:48,412 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-18 13:13:48,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-18 13:13:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 13:13:48,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-18 13:13:48,491 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-18 13:13:48,492 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 13:13:48,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 13:13:48,497 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-11-18 13:13:48,532 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 13:13:48,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:13:48 BoogieIcfgContainer [2024-11-18 13:13:48,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 13:13:48,536 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 13:13:48,536 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 13:13:48,537 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 13:13:48,538 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:13:44" (3/4) ... [2024-11-18 13:13:48,538 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-18 13:13:48,587 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 13:13:48,588 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 13:13:48,589 INFO L158 Benchmark]: Toolchain (without parser) took 4507.20ms. Allocated memory was 161.5MB in the beginning and 197.1MB in the end (delta: 35.7MB). Free memory was 128.7MB in the beginning and 93.7MB in the end (delta: 35.0MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2024-11-18 13:13:48,589 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:13:48,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.53ms. Allocated memory is still 161.5MB. Free memory was 128.7MB in the beginning and 116.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:13:48,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.32ms. Allocated memory is still 161.5MB. Free memory was 116.1MB in the beginning and 114.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:13:48,590 INFO L158 Benchmark]: Boogie Preprocessor took 38.47ms. Allocated memory is still 161.5MB. Free memory was 114.8MB in the beginning and 113.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:13:48,590 INFO L158 Benchmark]: RCFGBuilder took 305.13ms. Allocated memory is still 161.5MB. Free memory was 113.5MB in the beginning and 128.6MB in the end (delta: -15.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:13:48,590 INFO L158 Benchmark]: TraceAbstraction took 3821.13ms. Allocated memory was 161.5MB in the beginning and 197.1MB in the end (delta: 35.7MB). Free memory was 127.7MB in the beginning and 96.9MB in the end (delta: 30.8MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. [2024-11-18 13:13:48,590 INFO L158 Benchmark]: Witness Printer took 52.18ms. Allocated memory is still 197.1MB. Free memory was 96.9MB in the beginning and 93.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 13:13:48,592 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 161.5MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.53ms. Allocated memory is still 161.5MB. Free memory was 128.7MB in the beginning and 116.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.32ms. Allocated memory is still 161.5MB. Free memory was 116.1MB in the beginning and 114.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.47ms. Allocated memory is still 161.5MB. Free memory was 114.8MB in the beginning and 113.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 305.13ms. Allocated memory is still 161.5MB. Free memory was 113.5MB in the beginning and 128.6MB in the end (delta: -15.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3821.13ms. Allocated memory was 161.5MB in the beginning and 197.1MB in the end (delta: 35.7MB). Free memory was 127.7MB in the beginning and 96.9MB in the end (delta: 30.8MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. * Witness Printer took 52.18ms. Allocated memory is still 197.1MB. Free memory was 96.9MB in the beginning and 93.7MB in the end (delta: 3.1MB). 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int sn=0; [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L23] unsigned int x=0; VAL [sn=0, x=0] [L24] COND TRUE 1 VAL [sn=0, x=0] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=2, x=0] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=2, x=1] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=4, x=1] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=4, x=2] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=6, x=2] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=6, x=3] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=8, x=3] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=8, x=4] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=10, x=4] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=10, x=5] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=12, x=5] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=12, x=6] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=14, x=6] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=14, x=7] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=16, x=7] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=16, x=8] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=18, x=8] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=18, x=9] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=20, x=9] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=20, x=10] [L25] COND FALSE !(x<10) VAL [sn=20, x=10] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 231 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 184 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198 IncrementalHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 47 mSDtfsCounter, 198 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=5, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 732 SizeOfPredicates, 2 NumberOfNonLiveVariables, 170 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 30/162 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-18 13:13:48,617 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE