./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/busybox-1.22.0/basename-2.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/busybox-1.22.0/basename-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 551f956fc33a4b91d0a606a408c53a95b3cc64f8bde6794c363f5ce84e19f38f --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 21:13:49,638 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 21:13:49,708 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 21:13:49,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 21:13:49,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 21:13:49,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 21:13:49,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 21:13:49,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 21:13:49,737 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 21:13:49,740 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 21:13:49,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 21:13:49,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 21:13:49,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 21:13:49,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 21:13:49,743 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 21:13:49,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 21:13:49,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 21:13:49,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 21:13:49,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 21:13:49,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 21:13:49,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 21:13:49,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 21:13:49,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 21:13:49,745 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 21:13:49,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 21:13:49,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 21:13:49,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 21:13:49,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 21:13:49,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:13:49,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 21:13:49,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 21:13:49,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 21:13:49,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 21:13:49,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 21:13:49,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 21:13:49,748 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 21:13:49,748 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 21:13:49,749 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 21:13:49,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 21:13:49,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 551f956fc33a4b91d0a606a408c53a95b3cc64f8bde6794c363f5ce84e19f38f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 21:13:49,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 21:13:49,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 21:13:49,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 21:13:49,976 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 21:13:49,977 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 21:13:49,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/busybox-1.22.0/basename-2.i [2023-11-22 21:13:51,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 21:13:51,262 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 21:13:51,263 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/busybox-1.22.0/basename-2.i [2023-11-22 21:13:51,278 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddbeeb650/2eff29b7e72440329ac0bf43123ab356/FLAGa0d908016 [2023-11-22 21:13:51,302 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddbeeb650/2eff29b7e72440329ac0bf43123ab356 [2023-11-22 21:13:51,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 21:13:51,307 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 21:13:51,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 21:13:51,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 21:13:51,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 21:13:51,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:13:51" (1/1) ... [2023-11-22 21:13:51,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e684a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:51, skipping insertion in model container [2023-11-22 21:13:51,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:13:51" (1/1) ... [2023-11-22 21:13:51,369 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 21:13:51,923 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/busybox-1.22.0/basename-2.i[58078,58091] [2023-11-22 21:13:51,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:13:51,979 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 21:13:52,010 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/busybox-1.22.0/basename-2.i[58078,58091] [2023-11-22 21:13:52,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:13:52,096 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 21:13:52,102 INFO L206 MainTranslator]: Completed translation [2023-11-22 21:13:52,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52 WrapperNode [2023-11-22 21:13:52,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 21:13:52,105 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 21:13:52,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 21:13:52,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 21:13:52,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (1/1) ... [2023-11-22 21:13:52,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (1/1) ... [2023-11-22 21:13:52,167 INFO L138 Inliner]: procedures = 350, calls = 121, calls flagged for inlining = 11, calls inlined = 9, statements flattened = 362 [2023-11-22 21:13:52,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 21:13:52,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 21:13:52,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 21:13:52,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 21:13:52,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (1/1) ... [2023-11-22 21:13:52,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (1/1) ... [2023-11-22 21:13:52,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (1/1) ... [2023-11-22 21:13:52,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (1/1) ... [2023-11-22 21:13:52,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (1/1) ... [2023-11-22 21:13:52,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (1/1) ... [2023-11-22 21:13:52,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (1/1) ... [2023-11-22 21:13:52,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (1/1) ... [2023-11-22 21:13:52,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 21:13:52,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 21:13:52,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 21:13:52,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 21:13:52,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (1/1) ... [2023-11-22 21:13:52,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:13:52,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:13:52,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 21:13:52,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 21:13:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 21:13:52,333 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 21:13:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-22 21:13:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 21:13:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 21:13:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 21:13:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 21:13:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-22 21:13:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 21:13:52,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-22 21:13:52,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 21:13:52,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 21:13:52,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 21:13:52,535 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 21:13:52,537 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 21:13:52,784 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 21:13:52,826 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 21:13:52,826 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-22 21:13:52,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:13:52 BoogieIcfgContainer [2023-11-22 21:13:52,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 21:13:52,828 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 21:13:52,828 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 21:13:52,831 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 21:13:52,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:13:51" (1/3) ... [2023-11-22 21:13:52,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45659419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:13:52, skipping insertion in model container [2023-11-22 21:13:52,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:13:52" (2/3) ... [2023-11-22 21:13:52,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45659419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:13:52, skipping insertion in model container [2023-11-22 21:13:52,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:13:52" (3/3) ... [2023-11-22 21:13:52,834 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-2.i [2023-11-22 21:13:52,849 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 21:13:52,849 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 21:13:52,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 21:13:52,890 INFO L357 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, mHoare=true, 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;@727be5e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 21:13:52,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 21:13:52,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 60 states have (on average 1.7) internal successors, (102), 61 states have internal predecessors, (102), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-22 21:13:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-22 21:13:52,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:13:52,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:13:52,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:13:52,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:13:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1777308551, now seen corresponding path program 1 times [2023-11-22 21:13:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:13:52,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415291720] [2023-11-22 21:13:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:13:52,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:13:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:53,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 21:13:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:13:53,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:13:53,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415291720] [2023-11-22 21:13:53,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415291720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:13:53,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:13:53,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 21:13:53,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187856716] [2023-11-22 21:13:53,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:13:53,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:13:53,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:13:53,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:13:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 21:13:53,402 INFO L87 Difference]: Start difference. First operand has 65 states, 60 states have (on average 1.7) internal successors, (102), 61 states have internal predecessors, (102), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:53,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:13:53,461 INFO L93 Difference]: Finished difference Result 129 states and 213 transitions. [2023-11-22 21:13:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:13:53,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-22 21:13:53,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:13:53,469 INFO L225 Difference]: With dead ends: 129 [2023-11-22 21:13:53,469 INFO L226 Difference]: Without dead ends: 26 [2023-11-22 21:13:53,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 21:13:53,475 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:13:53,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:13:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-22 21:13:53,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-22 21:13:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-11-22 21:13:53,504 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2023-11-22 21:13:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:13:53,505 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-22 21:13:53,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-11-22 21:13:53,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-22 21:13:53,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:13:53,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:13:53,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 21:13:53,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:13:53,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:13:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1141479497, now seen corresponding path program 1 times [2023-11-22 21:13:53,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:13:53,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613529171] [2023-11-22 21:13:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:13:53,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:13:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:53,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:13:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:13:53,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:13:53,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613529171] [2023-11-22 21:13:53,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613529171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:13:53,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927815133] [2023-11-22 21:13:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:13:53,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:13:53,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:13:53,650 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) [2023-11-22 21:13:53,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 21:13:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:53,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:13:53,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:13:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:13:53,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:13:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:13:53,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927815133] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:13:53,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:13:53,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-22 21:13:53,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216847829] [2023-11-22 21:13:53,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:13:53,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:13:53,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:13:53,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:13:53,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:13:53,897 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 21:13:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:13:53,918 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2023-11-22 21:13:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:13:53,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-22 21:13:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:13:53,919 INFO L225 Difference]: With dead ends: 52 [2023-11-22 21:13:53,919 INFO L226 Difference]: Without dead ends: 29 [2023-11-22 21:13:53,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:13:53,920 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:13:53,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:13:53,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-22 21:13:53,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-22 21:13:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-11-22 21:13:53,924 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 23 [2023-11-22 21:13:53,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:13:53,925 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-11-22 21:13:53,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 21:13:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-11-22 21:13:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-22 21:13:53,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:13:53,926 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:13:53,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 21:13:54,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:13:54,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:13:54,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:13:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash 369669707, now seen corresponding path program 2 times [2023-11-22 21:13:54,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:13:54,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463028635] [2023-11-22 21:13:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:13:54,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:13:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:13:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:13:54,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:13:54,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463028635] [2023-11-22 21:13:54,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463028635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:13:54,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882444927] [2023-11-22 21:13:54,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:13:54,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:13:54,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:13:54,416 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) [2023-11-22 21:13:54,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 21:13:54,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 21:13:54,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:13:54,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:13:54,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:13:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 21:13:54,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:13:54,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882444927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:13:54,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:13:54,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 21:13:54,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545873441] [2023-11-22 21:13:54,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:13:54,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:13:54,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:13:54,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:13:54,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:13:54,620 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:13:54,675 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2023-11-22 21:13:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:13:54,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-22 21:13:54,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:13:54,677 INFO L225 Difference]: With dead ends: 45 [2023-11-22 21:13:54,677 INFO L226 Difference]: Without dead ends: 32 [2023-11-22 21:13:54,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:13:54,680 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:13:54,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 61 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:13:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-22 21:13:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-11-22 21:13:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-11-22 21:13:54,685 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 26 [2023-11-22 21:13:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:13:54,685 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-11-22 21:13:54,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:54,686 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-11-22 21:13:54,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-22 21:13:54,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:13:54,686 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:13:54,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 21:13:54,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-22 21:13:54,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:13:54,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:13:54,899 INFO L85 PathProgramCache]: Analyzing trace with hash -715336119, now seen corresponding path program 1 times [2023-11-22 21:13:54,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:13:54,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221908053] [2023-11-22 21:13:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:13:54,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:13:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:13:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 21:13:55,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:13:55,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221908053] [2023-11-22 21:13:55,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221908053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:13:55,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:13:55,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 21:13:55,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718612449] [2023-11-22 21:13:55,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:13:55,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:13:55,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:13:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:13:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 21:13:55,033 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:13:55,045 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2023-11-22 21:13:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:13:55,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-11-22 21:13:55,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:13:55,046 INFO L225 Difference]: With dead ends: 47 [2023-11-22 21:13:55,046 INFO L226 Difference]: Without dead ends: 31 [2023-11-22 21:13:55,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 21:13:55,047 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:13:55,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:13:55,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-22 21:13:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-22 21:13:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2023-11-22 21:13:55,050 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 29 [2023-11-22 21:13:55,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:13:55,050 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-11-22 21:13:55,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:55,050 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2023-11-22 21:13:55,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-22 21:13:55,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:13:55,051 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:13:55,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 21:13:55,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:13:55,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:13:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash 138019893, now seen corresponding path program 1 times [2023-11-22 21:13:55,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:13:55,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112281704] [2023-11-22 21:13:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:13:55,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:13:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:13:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 21:13:55,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:13:55,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112281704] [2023-11-22 21:13:55,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112281704] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:13:55,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690435354] [2023-11-22 21:13:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:13:55,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:13:55,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:13:55,147 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) [2023-11-22 21:13:55,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 21:13:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:55,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 21:13:55,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:13:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 21:13:55,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:13:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 21:13:55,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690435354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:13:55,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:13:55,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2023-11-22 21:13:55,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293543101] [2023-11-22 21:13:55,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:13:55,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 21:13:55,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:13:55,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 21:13:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:13:55,421 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-22 21:13:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:13:55,452 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2023-11-22 21:13:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 21:13:55,455 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-22 21:13:55,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:13:55,455 INFO L225 Difference]: With dead ends: 63 [2023-11-22 21:13:55,455 INFO L226 Difference]: Without dead ends: 38 [2023-11-22 21:13:55,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:13:55,456 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:13:55,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:13:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-22 21:13:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-22 21:13:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-11-22 21:13:55,460 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 30 [2023-11-22 21:13:55,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:13:55,460 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-11-22 21:13:55,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-22 21:13:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-11-22 21:13:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-22 21:13:55,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:13:55,461 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:13:55,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 21:13:55,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:13:55,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:13:55,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:13:55,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2076468407, now seen corresponding path program 2 times [2023-11-22 21:13:55,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:13:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639275472] [2023-11-22 21:13:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:13:55,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:13:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:55,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:13:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:13:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-22 21:13:55,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:13:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639275472] [2023-11-22 21:13:55,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639275472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:13:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585670643] [2023-11-22 21:13:55,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:13:55,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:13:55,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:13:55,825 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) [2023-11-22 21:13:55,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 21:13:56,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 21:13:56,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:13:56,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:13:56,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:13:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-22 21:13:56,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:13:56,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585670643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:13:56,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:13:56,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:13:56,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518977927] [2023-11-22 21:13:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:13:56,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:13:56,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:13:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:13:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:13:56,017 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:56,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:13:56,029 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-11-22 21:13:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:13:56,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2023-11-22 21:13:56,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:13:56,030 INFO L225 Difference]: With dead ends: 38 [2023-11-22 21:13:56,030 INFO L226 Difference]: Without dead ends: 0 [2023-11-22 21:13:56,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:13:56,031 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:13:56,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:13:56,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-22 21:13:56,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-22 21:13:56,032 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) [2023-11-22 21:13:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-22 21:13:56,033 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2023-11-22 21:13:56,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:13:56,033 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-22 21:13:56,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 21:13:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-22 21:13:56,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-22 21:13:56,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-22 21:13:56,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 21:13:56,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:13:56,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-22 21:13:56,289 INFO L899 garLoopResultBuilder]: For program point L1357(lines 1357 1377) no Hoare annotation was computed. [2023-11-22 21:13:56,289 INFO L899 garLoopResultBuilder]: For program point L1357-1(lines 1357 1377) no Hoare annotation was computed. [2023-11-22 21:13:56,289 INFO L902 garLoopResultBuilder]: At program point L1605(line 1605) the Hoare annotation is: true [2023-11-22 21:13:56,289 INFO L899 garLoopResultBuilder]: For program point L1605-1(line 1605) no Hoare annotation was computed. [2023-11-22 21:13:56,289 INFO L899 garLoopResultBuilder]: For program point L1491(lines 1491 1492) no Hoare annotation was computed. [2023-11-22 21:13:56,290 INFO L899 garLoopResultBuilder]: For program point L1359(lines 1359 1376) no Hoare annotation was computed. [2023-11-22 21:13:56,290 INFO L899 garLoopResultBuilder]: For program point bb_get_last_path_component_nostrip_returnLabel#1(lines 1421 1440) no Hoare annotation was computed. [2023-11-22 21:13:56,290 INFO L899 garLoopResultBuilder]: For program point __main_returnLabel#1(lines 1324 1420) no Hoare annotation was computed. [2023-11-22 21:13:56,290 INFO L899 garLoopResultBuilder]: For program point L1410(lines 1410 1411) no Hoare annotation was computed. [2023-11-22 21:13:56,290 INFO L899 garLoopResultBuilder]: For program point L1410-2(lines 1410 1411) no Hoare annotation was computed. [2023-11-22 21:13:56,290 INFO L902 garLoopResultBuilder]: At program point L1592(line 1592) the Hoare annotation is: true [2023-11-22 21:13:56,290 INFO L899 garLoopResultBuilder]: For program point L1592-1(line 1592) no Hoare annotation was computed. [2023-11-22 21:13:56,290 INFO L899 garLoopResultBuilder]: For program point L1427(lines 1427 1436) no Hoare annotation was computed. [2023-11-22 21:13:56,291 INFO L899 garLoopResultBuilder]: For program point L1427-2(lines 1422 1440) no Hoare annotation was computed. [2023-11-22 21:13:56,291 INFO L895 garLoopResultBuilder]: At program point L1609-3(lines 1609 1616) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~argc~0#1|) (<= |ULTIMATE.start_main_~argc~0#1| 10000)) [2023-11-22 21:13:56,291 INFO L899 garLoopResultBuilder]: For program point L1609-4(lines 1609 1616) no Hoare annotation was computed. [2023-11-22 21:13:56,291 INFO L899 garLoopResultBuilder]: For program point L1362(lines 1362 1375) no Hoare annotation was computed. [2023-11-22 21:13:56,291 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-22 21:13:56,291 INFO L899 garLoopResultBuilder]: For program point L1446(lines 1446 1453) no Hoare annotation was computed. [2023-11-22 21:13:56,292 INFO L899 garLoopResultBuilder]: For program point L1446-1(lines 1446 1453) no Hoare annotation was computed. [2023-11-22 21:13:56,292 INFO L899 garLoopResultBuilder]: For program point L1347(lines 1338 1350) no Hoare annotation was computed. [2023-11-22 21:13:56,292 INFO L899 garLoopResultBuilder]: For program point L1364(lines 1364 1374) no Hoare annotation was computed. [2023-11-22 21:13:56,292 INFO L899 garLoopResultBuilder]: For program point L1447-1(lines 1447 1453) no Hoare annotation was computed. [2023-11-22 21:13:56,292 INFO L902 garLoopResultBuilder]: At program point L1447-4(lines 1447 1453) the Hoare annotation is: true [2023-11-22 21:13:56,292 INFO L899 garLoopResultBuilder]: For program point L1431(lines 1431 1434) no Hoare annotation was computed. [2023-11-22 21:13:56,292 INFO L899 garLoopResultBuilder]: For program point L1431-2(lines 1431 1434) no Hoare annotation was computed. [2023-11-22 21:13:56,293 INFO L895 garLoopResultBuilder]: At program point L1614-3(lines 1614 1615) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~argc~0#1|) (<= |ULTIMATE.start_main_~argc~0#1| 10000)) [2023-11-22 21:13:56,293 INFO L899 garLoopResultBuilder]: For program point L1614-4(lines 1614 1615) no Hoare annotation was computed. [2023-11-22 21:13:56,293 INFO L899 garLoopResultBuilder]: For program point L1482(lines 1482 1494) no Hoare annotation was computed. [2023-11-22 21:13:56,293 INFO L899 garLoopResultBuilder]: For program point L1482-1(lines 1482 1494) no Hoare annotation was computed. [2023-11-22 21:13:56,293 INFO L899 garLoopResultBuilder]: For program point L1449(lines 1449 1450) no Hoare annotation was computed. [2023-11-22 21:13:56,293 INFO L899 garLoopResultBuilder]: For program point L1400(lines 1400 1413) no Hoare annotation was computed. [2023-11-22 21:13:56,293 INFO L899 garLoopResultBuilder]: For program point full_write_returnLabel#1(lines 1462 1479) no Hoare annotation was computed. [2023-11-22 21:13:56,293 INFO L899 garLoopResultBuilder]: For program point L1367(lines 1367 1373) no Hoare annotation was computed. [2023-11-22 21:13:56,294 INFO L899 garLoopResultBuilder]: For program point L1400-1(lines 1400 1413) no Hoare annotation was computed. [2023-11-22 21:13:56,294 INFO L902 garLoopResultBuilder]: At program point L1466-3(lines 1466 1477) the Hoare annotation is: true [2023-11-22 21:13:56,294 INFO L899 garLoopResultBuilder]: For program point L1334(lines 1334 1392) no Hoare annotation was computed. [2023-11-22 21:13:56,294 INFO L899 garLoopResultBuilder]: For program point L1466-4(lines 1466 1477) no Hoare annotation was computed. [2023-11-22 21:13:56,294 INFO L899 garLoopResultBuilder]: For program point L1334-2(lines 1325 1420) no Hoare annotation was computed. [2023-11-22 21:13:56,294 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-22 21:13:56,294 INFO L899 garLoopResultBuilder]: For program point L1351-1(lines 1351 1385) no Hoare annotation was computed. [2023-11-22 21:13:56,294 INFO L902 garLoopResultBuilder]: At program point L1599-3(lines 1599 1600) the Hoare annotation is: true [2023-11-22 21:13:56,295 INFO L899 garLoopResultBuilder]: For program point L1599-4(lines 1599 1600) no Hoare annotation was computed. [2023-11-22 21:13:56,295 INFO L899 garLoopResultBuilder]: For program point L1484(lines 1484 1493) no Hoare annotation was computed. [2023-11-22 21:13:56,295 INFO L899 garLoopResultBuilder]: For program point L1501-1(lines 1501 1509) no Hoare annotation was computed. [2023-11-22 21:13:56,295 INFO L902 garLoopResultBuilder]: At program point L1501-3(lines 1501 1509) the Hoare annotation is: true [2023-11-22 21:13:56,295 INFO L899 garLoopResultBuilder]: For program point L1369(lines 1369 1372) no Hoare annotation was computed. [2023-11-22 21:13:56,295 INFO L899 garLoopResultBuilder]: For program point L1501-4(lines 1501 1509) no Hoare annotation was computed. [2023-11-22 21:13:56,295 INFO L899 garLoopResultBuilder]: For program point L1469(lines 1469 1474) no Hoare annotation was computed. [2023-11-22 21:13:56,295 INFO L899 garLoopResultBuilder]: For program point L1403(lines 1403 1412) no Hoare annotation was computed. [2023-11-22 21:13:56,296 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1371) no Hoare annotation was computed. [2023-11-22 21:13:56,296 INFO L902 garLoopResultBuilder]: At program point L1618-3(lines 1618 1619) the Hoare annotation is: true [2023-11-22 21:13:56,296 INFO L899 garLoopResultBuilder]: For program point L1618-4(lines 1618 1619) no Hoare annotation was computed. [2023-11-22 21:13:56,296 INFO L899 garLoopResultBuilder]: For program point L1387(lines 1387 1391) no Hoare annotation was computed. [2023-11-22 21:13:56,296 INFO L899 garLoopResultBuilder]: For program point L1387-2(lines 1387 1391) no Hoare annotation was computed. [2023-11-22 21:13:56,296 INFO L899 garLoopResultBuilder]: For program point L1371(line 1371) no Hoare annotation was computed. [2023-11-22 21:13:56,296 INFO L899 garLoopResultBuilder]: For program point L1338(lines 1338 1350) no Hoare annotation was computed. [2023-11-22 21:13:56,297 INFO L899 garLoopResultBuilder]: For program point L1338-2(lines 1335 1392) no Hoare annotation was computed. [2023-11-22 21:13:56,297 INFO L899 garLoopResultBuilder]: For program point L1504(lines 1504 1507) no Hoare annotation was computed. [2023-11-22 21:13:56,297 INFO L899 garLoopResultBuilder]: For program point L1471(lines 1471 1472) no Hoare annotation was computed. [2023-11-22 21:13:56,297 INFO L899 garLoopResultBuilder]: For program point last_char_is_returnLabel#1(lines 1480 1496) no Hoare annotation was computed. [2023-11-22 21:13:56,297 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-11-22 21:13:56,297 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-11-22 21:13:56,297 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2023-11-22 21:13:56,297 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-11-22 21:13:56,300 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-11-22 21:13:56,302 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-22 21:13:56,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:13:56 BoogieIcfgContainer [2023-11-22 21:13:56,311 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-22 21:13:56,312 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-22 21:13:56,312 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-22 21:13:56,312 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-22 21:13:56,313 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:13:52" (3/4) ... [2023-11-22 21:13:56,314 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-22 21:13:56,317 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-22 21:13:56,322 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2023-11-22 21:13:56,323 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-22 21:13:56,323 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-22 21:13:56,323 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-22 21:13:56,324 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-22 21:13:56,324 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-22 21:13:56,407 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-22 21:13:56,408 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2023-11-22 21:13:56,408 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-22 21:13:56,408 INFO L158 Benchmark]: Toolchain (without parser) took 5101.60ms. Allocated memory was 132.1MB in the beginning and 201.3MB in the end (delta: 69.2MB). Free memory was 88.8MB in the beginning and 132.2MB in the end (delta: -43.4MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2023-11-22 21:13:56,408 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 54.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 21:13:56,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 796.03ms. Allocated memory is still 132.1MB. Free memory was 88.3MB in the beginning and 43.3MB in the end (delta: 45.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-22 21:13:56,409 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.63ms. Allocated memory is still 132.1MB. Free memory was 43.3MB in the beginning and 39.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-22 21:13:56,409 INFO L158 Benchmark]: Boogie Preprocessor took 35.42ms. Allocated memory is still 132.1MB. Free memory was 39.1MB in the beginning and 35.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-22 21:13:56,409 INFO L158 Benchmark]: RCFGBuilder took 622.27ms. Allocated memory is still 132.1MB. Free memory was 35.3MB in the beginning and 65.5MB in the end (delta: -30.1MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2023-11-22 21:13:56,410 INFO L158 Benchmark]: TraceAbstraction took 3483.45ms. Allocated memory was 132.1MB in the beginning and 201.3MB in the end (delta: 69.2MB). Free memory was 64.8MB in the beginning and 140.6MB in the end (delta: -75.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 21:13:56,410 INFO L158 Benchmark]: Witness Printer took 95.85ms. Allocated memory is still 201.3MB. Free memory was 140.6MB in the beginning and 132.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-22 21:13:56,411 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 54.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 796.03ms. Allocated memory is still 132.1MB. Free memory was 88.3MB in the beginning and 43.3MB in the end (delta: 45.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.63ms. Allocated memory is still 132.1MB. Free memory was 43.3MB in the beginning and 39.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.42ms. Allocated memory is still 132.1MB. Free memory was 39.1MB in the beginning and 35.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 622.27ms. Allocated memory is still 132.1MB. Free memory was 35.3MB in the beginning and 65.5MB in the end (delta: -30.1MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3483.45ms. Allocated memory was 132.1MB in the beginning and 201.3MB in the end (delta: 69.2MB). Free memory was 64.8MB in the beginning and 140.6MB in the end (delta: -75.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 95.85ms. Allocated memory is still 201.3MB. Free memory was 140.6MB in the beginning and 132.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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: 1371]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 450 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 265 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 126 IncrementalHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 185 mSDtfsCounter, 126 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, InterpolantAutomatonStates: 35, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 15 PreInvPairs, 36 NumberOfFragments, 22 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 66 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 282 NumberOfCodeBlocks, 263 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 404 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1150 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 151/188 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: 1501]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1609]: Loop Invariant Derived loop invariant: ((1 <= argc) && (argc <= 10000)) - InvariantResult [Line: 1599]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1614]: Loop Invariant Derived loop invariant: ((1 <= argc) && (argc <= 10000)) - InvariantResult [Line: 1618]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1447]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1466]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-22 21:13:56,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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