./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5097186312a07da16ab8fdeadf6c0d6b4634620407ae37986153d9e0823e6f5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 23:52:54,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 23:52:54,339 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 23:52:54,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 23:52:54,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 23:52:54,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 23:52:54,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 23:52:54,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 23:52:54,384 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 23:52:54,385 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 23:52:54,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 23:52:54,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 23:52:54,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 23:52:54,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 23:52:54,388 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 23:52:54,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 23:52:54,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 23:52:54,389 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 23:52:54,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 23:52:54,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 23:52:54,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 23:52:54,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 23:52:54,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 23:52:54,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 23:52:54,394 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 23:52:54,394 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 23:52:54,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 23:52:54,394 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 23:52:54,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 23:52:54,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 23:52:54,395 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 23:52:54,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 23:52:54,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:52:54,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 23:52:54,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 23:52:54,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 23:52:54,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 23:52:54,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 23:52:54,397 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 23:52:54,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 23:52:54,397 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 23:52:54,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 23:52:54,399 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5097186312a07da16ab8fdeadf6c0d6b4634620407ae37986153d9e0823e6f5 [2024-10-23 23:52:54,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 23:52:54,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 23:52:54,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 23:52:54,668 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 23:52:54,668 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 23:52:54,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i [2024-10-23 23:52:56,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 23:52:56,278 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 23:52:56,279 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i [2024-10-23 23:52:56,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a2dbe34/21b1ae565af94e239fa2beb9d2152a93/FLAGb71d1ee70 [2024-10-23 23:52:56,297 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a2dbe34/21b1ae565af94e239fa2beb9d2152a93 [2024-10-23 23:52:56,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 23:52:56,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 23:52:56,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 23:52:56,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 23:52:56,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 23:52:56,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23cd09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56, skipping insertion in model container [2024-10-23 23:52:56,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 23:52:56,500 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i[893,906] [2024-10-23 23:52:56,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:52:56,532 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 23:52:56,542 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i[893,906] [2024-10-23 23:52:56,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:52:56,563 INFO L204 MainTranslator]: Completed translation [2024-10-23 23:52:56,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56 WrapperNode [2024-10-23 23:52:56,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 23:52:56,565 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 23:52:56,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 23:52:56,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 23:52:56,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,576 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,594 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 112 [2024-10-23 23:52:56,595 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 23:52:56,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 23:52:56,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 23:52:56,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 23:52:56,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,606 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,616 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 23:52:56,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,620 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 23:52:56,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 23:52:56,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 23:52:56,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 23:52:56,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (1/1) ... [2024-10-23 23:52:56,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:52:56,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:52:56,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 23:52:56,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 23:52:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 23:52:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 23:52:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 23:52:56,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 23:52:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-23 23:52:56,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-23 23:52:56,787 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 23:52:56,789 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 23:52:56,959 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-10-23 23:52:56,960 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 23:52:56,985 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 23:52:56,985 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-23 23:52:56,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:52:56 BoogieIcfgContainer [2024-10-23 23:52:56,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 23:52:56,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 23:52:56,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 23:52:56,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 23:52:56,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:52:56" (1/3) ... [2024-10-23 23:52:56,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82b9514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:52:56, skipping insertion in model container [2024-10-23 23:52:56,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:52:56" (2/3) ... [2024-10-23 23:52:56,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82b9514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:52:56, skipping insertion in model container [2024-10-23 23:52:56,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:52:56" (3/3) ... [2024-10-23 23:52:56,994 INFO L112 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2024-10-23 23:52:57,013 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 23:52:57,014 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 23:52:57,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 23:52:57,083 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@271d556b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 23:52:57,084 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 23:52:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 30 states have internal predecessors, (45), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-23 23:52:57,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-23 23:52:57,098 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:52:57,098 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:52:57,099 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:52:57,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:52:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash 644946439, now seen corresponding path program 1 times [2024-10-23 23:52:57,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:52:57,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580004418] [2024-10-23 23:52:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:52:57,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:52:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:52:57,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:52:57,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580004418] [2024-10-23 23:52:57,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580004418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:52:57,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:52:57,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-23 23:52:57,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623047385] [2024-10-23 23:52:57,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:52:57,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 23:52:57,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:52:57,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 23:52:57,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 23:52:57,470 INFO L87 Difference]: Start difference. First operand has 47 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 30 states have internal predecessors, (45), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:52:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:52:57,629 INFO L93 Difference]: Finished difference Result 102 states and 197 transitions. [2024-10-23 23:52:57,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 23:52:57,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-23 23:52:57,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:52:57,638 INFO L225 Difference]: With dead ends: 102 [2024-10-23 23:52:57,638 INFO L226 Difference]: Without dead ends: 59 [2024-10-23 23:52:57,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:52:57,644 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 12 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:52:57,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 225 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 23:52:57,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-23 23:52:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2024-10-23 23:52:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 29 states have (on average 1.206896551724138) internal successors, (35), 33 states have internal predecessors, (35), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-23 23:52:57,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 75 transitions. [2024-10-23 23:52:57,701 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 75 transitions. Word has length 12 [2024-10-23 23:52:57,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:52:57,702 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 75 transitions. [2024-10-23 23:52:57,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:52:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 75 transitions. [2024-10-23 23:52:57,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-23 23:52:57,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:52:57,705 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:52:57,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 23:52:57,705 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:52:57,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:52:57,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1160344907, now seen corresponding path program 1 times [2024-10-23 23:52:57,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:52:57,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302203938] [2024-10-23 23:52:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:52:57,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:52:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:57,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:52:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:52:57,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:52:57,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302203938] [2024-10-23 23:52:57,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302203938] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:52:57,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:52:57,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-23 23:52:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957809467] [2024-10-23 23:52:57,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:52:57,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 23:52:57,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:52:57,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 23:52:57,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:52:57,934 INFO L87 Difference]: Start difference. First operand 52 states and 75 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-23 23:52:58,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:52:58,083 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2024-10-23 23:52:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 23:52:58,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-10-23 23:52:58,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:52:58,088 INFO L225 Difference]: With dead ends: 58 [2024-10-23 23:52:58,088 INFO L226 Difference]: Without dead ends: 56 [2024-10-23 23:52:58,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:52:58,092 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 15 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:52:58,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 197 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 23:52:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-23 23:52:58,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-23 23:52:58,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 32 states have (on average 1.1875) internal successors, (38), 36 states have internal predecessors, (38), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-23 23:52:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2024-10-23 23:52:58,117 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 17 [2024-10-23 23:52:58,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:52:58,118 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2024-10-23 23:52:58,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-23 23:52:58,118 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2024-10-23 23:52:58,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-23 23:52:58,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:52:58,120 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 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, 1] [2024-10-23 23:52:58,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 23:52:58,121 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:52:58,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:52:58,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1092533038, now seen corresponding path program 1 times [2024-10-23 23:52:58,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:52:58,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465919122] [2024-10-23 23:52:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:52:58,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:52:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:52:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-23 23:52:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-23 23:52:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-23 23:52:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-23 23:52:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-23 23:52:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-23 23:52:58,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:52:58,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465919122] [2024-10-23 23:52:58,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465919122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:52:58,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:52:58,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 23:52:58,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332297973] [2024-10-23 23:52:58,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:52:58,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:52:58,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:52:58,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:52:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:52:58,230 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-23 23:52:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:52:58,263 INFO L93 Difference]: Finished difference Result 85 states and 118 transitions. [2024-10-23 23:52:58,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:52:58,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2024-10-23 23:52:58,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:52:58,266 INFO L225 Difference]: With dead ends: 85 [2024-10-23 23:52:58,266 INFO L226 Difference]: Without dead ends: 56 [2024-10-23 23:52:58,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:52:58,268 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 23:52:58,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 23:52:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-23 23:52:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-23 23:52:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 32 states have (on average 1.125) internal successors, (36), 36 states have internal predecessors, (36), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-23 23:52:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-10-23 23:52:58,282 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 46 [2024-10-23 23:52:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:52:58,282 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-10-23 23:52:58,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-23 23:52:58,283 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-10-23 23:52:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-23 23:52:58,284 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:52:58,284 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1] [2024-10-23 23:52:58,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 23:52:58,285 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:52:58,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:52:58,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1294632752, now seen corresponding path program 1 times [2024-10-23 23:52:58,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:52:58,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909140871] [2024-10-23 23:52:58,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:52:58,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:52:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:52:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-23 23:52:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-23 23:52:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-23 23:52:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-23 23:52:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-23 23:52:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-23 23:52:58,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:52:58,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909140871] [2024-10-23 23:52:58,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909140871] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:52:58,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:52:58,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-23 23:52:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581464711] [2024-10-23 23:52:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:52:58,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 23:52:58,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:52:58,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 23:52:58,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:52:58,479 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-23 23:52:58,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:52:58,598 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2024-10-23 23:52:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 23:52:58,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2024-10-23 23:52:58,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:52:58,600 INFO L225 Difference]: With dead ends: 63 [2024-10-23 23:52:58,600 INFO L226 Difference]: Without dead ends: 61 [2024-10-23 23:52:58,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:52:58,601 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:52:58,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 172 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 23:52:58,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-23 23:52:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-10-23 23:52:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 39 states have internal predecessors, (39), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-23 23:52:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-23 23:52:58,614 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 47 [2024-10-23 23:52:58,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:52:58,615 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-23 23:52:58,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-23 23:52:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-10-23 23:52:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-23 23:52:58,620 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:52:58,621 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:52:58,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 23:52:58,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:52:58,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:52:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash 939016302, now seen corresponding path program 1 times [2024-10-23 23:52:58,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:52:58,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327823105] [2024-10-23 23:52:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:52:58,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:52:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:52:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-23 23:52:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-23 23:52:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-23 23:52:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-23 23:52:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-23 23:52:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-23 23:52:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-23 23:52:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-23 23:52:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-23 23:52:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-23 23:52:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-23 23:52:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-23 23:52:58,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:52:58,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327823105] [2024-10-23 23:52:58,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327823105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:52:58,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:52:58,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-23 23:52:58,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563989535] [2024-10-23 23:52:58,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:52:58,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 23:52:58,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:52:58,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 23:52:58,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:52:58,823 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-23 23:52:58,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:52:58,906 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2024-10-23 23:52:58,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 23:52:58,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 82 [2024-10-23 23:52:58,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:52:58,908 INFO L225 Difference]: With dead ends: 69 [2024-10-23 23:52:58,908 INFO L226 Difference]: Without dead ends: 67 [2024-10-23 23:52:58,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:52:58,909 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 6 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:52:58,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 259 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 23:52:58,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-23 23:52:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2024-10-23 23:52:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 38 states have (on average 1.105263157894737) internal successors, (42), 42 states have internal predecessors, (42), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-23 23:52:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2024-10-23 23:52:58,920 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 82 [2024-10-23 23:52:58,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:52:58,921 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2024-10-23 23:52:58,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-23 23:52:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2024-10-23 23:52:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-23 23:52:58,922 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:52:58,923 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:52:58,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 23:52:58,923 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:52:58,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:52:58,923 INFO L85 PathProgramCache]: Analyzing trace with hash 254908718, now seen corresponding path program 1 times [2024-10-23 23:52:58,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:52:58,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852915024] [2024-10-23 23:52:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:52:58,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:52:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-23 23:52:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-23 23:52:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-23 23:52:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-23 23:52:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-23 23:52:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-23 23:52:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-23 23:52:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-23 23:52:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-23 23:52:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-23 23:52:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-23 23:52:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-23 23:52:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-23 23:52:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:52:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-23 23:52:59,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:52:59,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852915024] [2024-10-23 23:52:59,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852915024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:52:59,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:52:59,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-23 23:52:59,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265067680] [2024-10-23 23:52:59,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:52:59,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 23:52:59,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:52:59,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 23:52:59,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:52:59,060 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-23 23:52:59,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:52:59,145 INFO L93 Difference]: Finished difference Result 70 states and 91 transitions. [2024-10-23 23:52:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 23:52:59,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 87 [2024-10-23 23:52:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:52:59,147 INFO L225 Difference]: With dead ends: 70 [2024-10-23 23:52:59,147 INFO L226 Difference]: Without dead ends: 0 [2024-10-23 23:52:59,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:52:59,150 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 9 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:52:59,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 275 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 23:52:59,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-23 23:52:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-23 23:52:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:52:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-23 23:52:59,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2024-10-23 23:52:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:52:59,154 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-23 23:52:59,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-23 23:52:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-23 23:52:59,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-23 23:52:59,158 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 23:52:59,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 23:52:59,162 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-23 23:52:59,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-23 23:52:59,440 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 23:52:59,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:52:59 BoogieIcfgContainer [2024-10-23 23:52:59,467 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 23:52:59,467 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 23:52:59,467 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 23:52:59,467 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 23:52:59,469 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:52:56" (3/4) ... [2024-10-23 23:52:59,471 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-23 23:52:59,474 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-23 23:52:59,478 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-23 23:52:59,479 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-23 23:52:59,479 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-23 23:52:59,480 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-23 23:52:59,568 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-23 23:52:59,571 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-23 23:52:59,571 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 23:52:59,572 INFO L158 Benchmark]: Toolchain (without parser) took 3270.59ms. Allocated memory was 174.1MB in the beginning and 237.0MB in the end (delta: 62.9MB). Free memory was 124.3MB in the beginning and 131.7MB in the end (delta: -7.4MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. [2024-10-23 23:52:59,572 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 174.1MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 23:52:59,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.16ms. Allocated memory is still 174.1MB. Free memory was 124.3MB in the beginning and 110.2MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-23 23:52:59,572 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.41ms. Allocated memory is still 174.1MB. Free memory was 110.2MB in the beginning and 108.2MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-23 23:52:59,573 INFO L158 Benchmark]: Boogie Preprocessor took 30.90ms. Allocated memory is still 174.1MB. Free memory was 108.2MB in the beginning and 106.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 23:52:59,575 INFO L158 Benchmark]: RCFGBuilder took 358.56ms. Allocated memory is still 174.1MB. Free memory was 106.8MB in the beginning and 91.4MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-23 23:52:59,575 INFO L158 Benchmark]: TraceAbstraction took 2478.96ms. Allocated memory was 174.1MB in the beginning and 237.0MB in the end (delta: 62.9MB). Free memory was 90.7MB in the beginning and 136.9MB in the end (delta: -46.2MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2024-10-23 23:52:59,576 INFO L158 Benchmark]: Witness Printer took 104.15ms. Allocated memory is still 237.0MB. Free memory was 136.9MB in the beginning and 131.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-23 23:52:59,577 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 174.1MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.16ms. Allocated memory is still 174.1MB. Free memory was 124.3MB in the beginning and 110.2MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.41ms. Allocated memory is still 174.1MB. Free memory was 110.2MB in the beginning and 108.2MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.90ms. Allocated memory is still 174.1MB. Free memory was 108.2MB in the beginning and 106.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 358.56ms. Allocated memory is still 174.1MB. Free memory was 106.8MB in the beginning and 91.4MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2478.96ms. Allocated memory was 174.1MB in the beginning and 237.0MB in the end (delta: 62.9MB). Free memory was 90.7MB in the beginning and 136.9MB in the end (delta: -46.2MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * Witness Printer took 104.15ms. Allocated memory is still 237.0MB. Free memory was 136.9MB in the beginning and 131.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 1244 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 897 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 380 IncrementalHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 347 mSDtfsCounter, 380 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=5, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 291 NumberOfCodeBlocks, 291 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 285 ConstructedInterpolants, 0 QuantifiedInterpolants, 446 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 772/772 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: 47]: Loop Invariant Derived loop invariant: ((((long long) cp + 1) <= urilen) && (1 <= cp)) - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: ((((((long long) cp + 1) <= urilen) && (1 <= c)) && (1 <= cp)) || (((c == 0) && (((long long) cp + 1) <= urilen)) && (1 <= cp))) - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-10-23 23:52:59,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE