./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/loopv3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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-crafted-1/loopv3.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 dde080b2b1290163775d8fea1546e1b21e5d1f7776ff175b316d8ca2be5d0863 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:50:45,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:50:45,822 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:50:45,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:50:45,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:50:45,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:50:45,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:50:45,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:50:45,856 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:50:45,857 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:50:45,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:50:45,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:50:45,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:50:45,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:50:45,860 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:50:45,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:50:45,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:50:45,861 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:50:45,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:50:45,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:50:45,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:50:45,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:50:45,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:50:45,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:50:45,866 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:50:45,866 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:50:45,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:50:45,867 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:50:45,867 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:50:45,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:50:45,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:50:45,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:50:45,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:50:45,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:50:45,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:50:45,869 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:50:45,869 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:50:45,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:50:45,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:50:45,870 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:50:45,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:50:45,871 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:50:45,871 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dde080b2b1290163775d8fea1546e1b21e5d1f7776ff175b316d8ca2be5d0863 [2024-11-16 06:50:46,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:50:46,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:50:46,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:50:46,159 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:50:46,160 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:50:46,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/loopv3.c [2024-11-16 06:50:47,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:50:47,737 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:50:47,737 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/loopv3.c [2024-11-16 06:50:47,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b882bdee8/b479a2d287a940dcb093667628d55c16/FLAG31358d6c9 [2024-11-16 06:50:48,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b882bdee8/b479a2d287a940dcb093667628d55c16 [2024-11-16 06:50:48,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:50:48,137 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:50:48,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:50:48,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:50:48,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:50:48,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48, skipping insertion in model container [2024-11-16 06:50:48,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,165 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:50:48,334 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-crafted-1/loopv3.c[456,469] [2024-11-16 06:50:48,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:50:48,359 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:50:48,371 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-crafted-1/loopv3.c[456,469] [2024-11-16 06:50:48,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:50:48,392 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:50:48,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48 WrapperNode [2024-11-16 06:50:48,395 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:50:48,396 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:50:48,396 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:50:48,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:50:48,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,427 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-11-16 06:50:48,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:50:48,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:50:48,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:50:48,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:50:48,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,439 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,450 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]. [2024-11-16 06:50:48,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,454 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:50:48,461 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:50:48,461 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:50:48,461 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:50:48,462 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (1/1) ... [2024-11-16 06:50:48,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:50:48,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:48,502 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) [2024-11-16 06:50:48,506 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 [2024-11-16 06:50:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:50:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:50:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:50:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:50:48,600 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:50:48,602 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:50:48,700 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-16 06:50:48,701 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:50:48,721 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:50:48,722 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:50:48,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:50:48 BoogieIcfgContainer [2024-11-16 06:50:48,722 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:50:48,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:50:48,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:50:48,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:50:48,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:50:48" (1/3) ... [2024-11-16 06:50:48,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b665c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:50:48, skipping insertion in model container [2024-11-16 06:50:48,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:50:48" (2/3) ... [2024-11-16 06:50:48,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b665c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:50:48, skipping insertion in model container [2024-11-16 06:50:48,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:50:48" (3/3) ... [2024-11-16 06:50:48,735 INFO L112 eAbstractionObserver]: Analyzing ICFG loopv3.c [2024-11-16 06:50:48,771 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:50:48,772 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:50:48,825 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:50:48,831 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;@76a3763, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:50:48,831 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:50:48,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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) [2024-11-16 06:50:48,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-16 06:50:48,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:48,841 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:48,841 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:48,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:48,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1421069457, now seen corresponding path program 1 times [2024-11-16 06:50:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:48,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357433498] [2024-11-16 06:50:48,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:48,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:48,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:48,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357433498] [2024-11-16 06:50:48,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357433498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:50:48,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:50:48,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:50:48,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116408141] [2024-11-16 06:50:48,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:50:48,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:50:48,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:48,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:50:48,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:50:48,999 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2024-11-16 06:50:49,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:49,007 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-16 06:50:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:50:49,008 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2024-11-16 06:50:49,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:49,013 INFO L225 Difference]: With dead ends: 24 [2024-11-16 06:50:49,013 INFO L226 Difference]: Without dead ends: 10 [2024-11-16 06:50:49,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:50:49,018 INFO L432 NwaCegarLoop]: 15 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, 15 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 [2024-11-16 06:50:49,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:49,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-16 06:50:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-16 06:50:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:50:49,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-11-16 06:50:49,038 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2024-11-16 06:50:49,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:49,038 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-11-16 06:50:49,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2024-11-16 06:50:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-11-16 06:50:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-16 06:50:49,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:49,039 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:49,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:50:49,039 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:49,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:49,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1128354694, now seen corresponding path program 1 times [2024-11-16 06:50:49,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:49,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135650890] [2024-11-16 06:50:49,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:49,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:49,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:49,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135650890] [2024-11-16 06:50:49,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135650890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:50:49,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:50:49,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:50:49,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232413725] [2024-11-16 06:50:49,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:50:49,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:50:49,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:49,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:50:49,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:50:49,161 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-16 06:50:49,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:49,194 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2024-11-16 06:50:49,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:50:49,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-16 06:50:49,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:49,196 INFO L225 Difference]: With dead ends: 18 [2024-11-16 06:50:49,197 INFO L226 Difference]: Without dead ends: 13 [2024-11-16 06:50:49,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:50:49,198 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 11 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 [2024-11-16 06:50:49,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 11 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:49,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-16 06:50:49,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-11-16 06:50:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2024-11-16 06:50:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-11-16 06:50:49,208 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2024-11-16 06:50:49,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:49,208 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-11-16 06:50:49,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-16 06:50:49,209 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-11-16 06:50:49,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 06:50:49,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:49,210 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:49,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:50:49,211 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:49,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:49,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2058219322, now seen corresponding path program 1 times [2024-11-16 06:50:49,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:49,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593094970] [2024-11-16 06:50:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:49,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:49,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593094970] [2024-11-16 06:50:49,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593094970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:49,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890267206] [2024-11-16 06:50:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:49,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:49,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:49,384 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) [2024-11-16 06:50:49,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:50:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:49,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 06:50:49,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:49,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:49,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890267206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:49,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:49,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-16 06:50:49,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851634810] [2024-11-16 06:50:49,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:49,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:50:49,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:49,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:50:49,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:50:49,598 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 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) [2024-11-16 06:50:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:49,680 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-11-16 06:50:49,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 06:50:49,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 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 11 [2024-11-16 06:50:49,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:49,683 INFO L225 Difference]: With dead ends: 26 [2024-11-16 06:50:49,683 INFO L226 Difference]: Without dead ends: 21 [2024-11-16 06:50:49,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:50:49,686 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:49,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 24 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-16 06:50:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-16 06:50:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 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) [2024-11-16 06:50:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-16 06:50:49,693 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2024-11-16 06:50:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:49,693 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-16 06:50:49,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 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) [2024-11-16 06:50:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-16 06:50:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 06:50:49,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:49,694 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:49,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:50:49,895 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 [2024-11-16 06:50:49,896 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:49,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:49,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1844222598, now seen corresponding path program 2 times [2024-11-16 06:50:49,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:49,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553271125] [2024-11-16 06:50:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:49,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:50,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:50,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553271125] [2024-11-16 06:50:50,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553271125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:50,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493429799] [2024-11-16 06:50:50,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:50:50,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:50,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:50,074 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) [2024-11-16 06:50:50,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:50:50,126 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:50:50,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:50:50,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:50:50,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:50,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:50,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493429799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:50,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:50,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-16 06:50:50,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549163588] [2024-11-16 06:50:50,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:50,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 06:50:50,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:50,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 06:50:50,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-16 06:50:50,393 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 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) [2024-11-16 06:50:50,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:50,590 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2024-11-16 06:50:50,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 06:50:50,591 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 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 20 [2024-11-16 06:50:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:50,593 INFO L225 Difference]: With dead ends: 44 [2024-11-16 06:50:50,593 INFO L226 Difference]: Without dead ends: 39 [2024-11-16 06:50:50,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-16 06:50:50,594 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 60 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:50,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 28 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:50:50,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-16 06:50:50,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-16 06:50:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 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) [2024-11-16 06:50:50,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-16 06:50:50,606 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 20 [2024-11-16 06:50:50,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:50,606 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-16 06:50:50,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 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) [2024-11-16 06:50:50,607 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-16 06:50:50,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 06:50:50,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:50,608 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:50,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 06:50:50,809 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 [2024-11-16 06:50:50,809 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:50,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:50,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1838492410, now seen corresponding path program 3 times [2024-11-16 06:50:50,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:50,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688134783] [2024-11-16 06:50:50,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:50,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:51,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:51,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688134783] [2024-11-16 06:50:51,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688134783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:51,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331546923] [2024-11-16 06:50:51,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:50:51,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:51,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:51,107 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) [2024-11-16 06:50:51,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:50:51,166 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-16 06:50:51,166 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:50:51,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 06:50:51,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:51,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:51,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331546923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:50:51,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:50:51,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-16 06:50:51,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313601306] [2024-11-16 06:50:51,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:50:51,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-16 06:50:51,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:51,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-16 06:50:51,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 06:50:51,736 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 states have internal predecessors, (105), 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) [2024-11-16 06:50:52,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:52,153 INFO L93 Difference]: Finished difference Result 80 states and 113 transitions. [2024-11-16 06:50:52,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:50:52,155 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 states have internal predecessors, (105), 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 38 [2024-11-16 06:50:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:52,156 INFO L225 Difference]: With dead ends: 80 [2024-11-16 06:50:52,156 INFO L226 Difference]: Without dead ends: 75 [2024-11-16 06:50:52,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-16 06:50:52,159 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 108 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:52,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 47 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:50:52,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-16 06:50:52,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-16 06:50:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 74 states have internal predecessors, (97), 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) [2024-11-16 06:50:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2024-11-16 06:50:52,169 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 38 [2024-11-16 06:50:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:52,170 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2024-11-16 06:50:52,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 states have internal predecessors, (105), 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) [2024-11-16 06:50:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2024-11-16 06:50:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 06:50:52,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:50:52,172 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:50:52,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 06:50:52,376 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 [2024-11-16 06:50:52,377 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:50:52,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:50:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1511156230, now seen corresponding path program 4 times [2024-11-16 06:50:52,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:50:52,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610970374] [2024-11-16 06:50:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:50:52,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:50:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:50:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:53,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:50:53,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610970374] [2024-11-16 06:50:53,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610970374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:53,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435139660] [2024-11-16 06:50:53,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:50:53,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:50:53,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:50:53,023 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) [2024-11-16 06:50:53,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:50:53,090 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:50:53,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:50:53,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-16 06:50:53,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:50:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:50:53,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:50:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2024-11-16 06:50:54,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435139660] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 06:50:54,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 06:50:54,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25, 26] total 51 [2024-11-16 06:50:54,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144975177] [2024-11-16 06:50:54,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:50:54,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:50:54,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:50:54,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:50:54,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2172, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 06:50:54,088 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-16 06:50:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:50:54,108 INFO L93 Difference]: Finished difference Result 75 states and 97 transitions. [2024-11-16 06:50:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:50:54,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 74 [2024-11-16 06:50:54,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:50:54,110 INFO L225 Difference]: With dead ends: 75 [2024-11-16 06:50:54,110 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 06:50:54,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=378, Invalid=2172, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 06:50:54,114 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:50:54,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:50:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 06:50:54,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 06:50:54,116 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) [2024-11-16 06:50:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 06:50:54,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2024-11-16 06:50:54,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:50:54,117 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 06:50:54,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-16 06:50:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 06:50:54,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 06:50:54,121 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 06:50:54,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 06:50:54,325 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 [2024-11-16 06:50:54,328 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2024-11-16 06:50:54,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 06:50:54,425 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 06:50:54,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 06:50:54 BoogieIcfgContainer [2024-11-16 06:50:54,434 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 06:50:54,435 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 06:50:54,435 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 06:50:54,435 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 06:50:54,436 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:50:48" (3/4) ... [2024-11-16 06:50:54,438 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 06:50:54,445 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-16 06:50:54,445 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 06:50:54,445 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 06:50:54,445 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 06:50:54,519 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 06:50:54,520 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 06:50:54,520 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 06:50:54,521 INFO L158 Benchmark]: Toolchain (without parser) took 6383.40ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 120.1MB in the beginning and 131.0MB in the end (delta: -11.0MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2024-11-16 06:50:54,521 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:50:54,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.23ms. Allocated memory is still 157.3MB. Free memory was 119.0MB in the beginning and 107.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 06:50:54,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.96ms. Allocated memory is still 157.3MB. Free memory was 107.5MB in the beginning and 105.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:50:54,522 INFO L158 Benchmark]: Boogie Preprocessor took 31.62ms. Allocated memory is still 157.3MB. Free memory was 105.4MB in the beginning and 104.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:50:54,522 INFO L158 Benchmark]: IcfgBuilder took 261.73ms. Allocated memory is still 157.3MB. Free memory was 104.4MB in the beginning and 128.4MB in the end (delta: -24.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-16 06:50:54,523 INFO L158 Benchmark]: TraceAbstraction took 5709.33ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 128.4MB in the beginning and 135.2MB in the end (delta: -6.8MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2024-11-16 06:50:54,523 INFO L158 Benchmark]: Witness Printer took 85.24ms. Allocated memory is still 188.7MB. Free memory was 135.2MB in the beginning and 131.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 06:50:54,524 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.23ms. Allocated memory is still 157.3MB. Free memory was 119.0MB in the beginning and 107.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.96ms. Allocated memory is still 157.3MB. Free memory was 107.5MB in the beginning and 105.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.62ms. Allocated memory is still 157.3MB. Free memory was 105.4MB in the beginning and 104.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 261.73ms. Allocated memory is still 157.3MB. Free memory was 104.4MB in the beginning and 128.4MB in the end (delta: -24.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5709.33ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 128.4MB in the beginning and 135.2MB in the end (delta: -6.8MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Witness Printer took 85.24ms. Allocated memory is still 188.7MB. Free memory was 135.2MB in the beginning and 131.0MB in the end (delta: 4.2MB). 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: 14]: 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 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 6, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 222 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 222 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 86 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 197 IncrementalHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 46 mSDtfsCounter, 197 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 351 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=5, InterpolantAutomatonStates: 55, 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, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 301 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 430 ConstructedInterpolants, 0 QuantifiedInterpolants, 1880 SizeOfPredicates, 6 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 737/2760 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: 23]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-16 06:50:54,554 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