./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.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/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.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 533002163507f0c639f96dad498aa5a77ce9293ee59501fe5d4faddfa0e552cb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 09:37:17,579 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 09:37:17,654 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 09:37:17,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 09:37:17,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 09:37:17,705 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 09:37:17,706 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 09:37:17,706 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 09:37:17,707 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 09:37:17,707 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 09:37:17,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 09:37:17,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 09:37:17,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 09:37:17,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 09:37:17,709 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 09:37:17,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 09:37:17,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 09:37:17,710 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 09:37:17,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 09:37:17,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 09:37:17,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 09:37:17,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 09:37:17,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 09:37:17,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 09:37:17,713 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 09:37:17,713 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 09:37:17,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 09:37:17,714 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 09:37:17,714 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 09:37:17,714 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 09:37:17,714 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 09:37:17,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 09:37:17,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 09:37:17,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 09:37:17,716 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 09:37:17,716 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 09:37:17,717 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 09:37:17,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 09:37:17,717 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 09:37:17,717 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 09:37:17,718 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 09:37:17,718 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 09:37:17,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 533002163507f0c639f96dad498aa5a77ce9293ee59501fe5d4faddfa0e552cb [2024-10-24 09:37:17,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 09:37:17,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 09:37:18,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 09:37:18,002 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 09:37:18,002 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 09:37:18,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i [2024-10-24 09:37:19,551 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 09:37:19,770 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 09:37:19,771 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i [2024-10-24 09:37:19,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce6d2b89/6e81684193c44e3abbae8c9c459b9645/FLAG299ac65d4 [2024-10-24 09:37:19,799 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ce6d2b89/6e81684193c44e3abbae8c9c459b9645 [2024-10-24 09:37:19,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 09:37:19,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 09:37:19,807 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 09:37:19,807 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 09:37:19,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 09:37:19,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:37:19" (1/1) ... [2024-10-24 09:37:19,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27858da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:19, skipping insertion in model container [2024-10-24 09:37:19,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:37:19" (1/1) ... [2024-10-24 09:37:19,840 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 09:37:20,003 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/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i[915,928] [2024-10-24 09:37:20,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 09:37:20,049 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 09:37:20,061 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/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-42.i[915,928] [2024-10-24 09:37:20,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 09:37:20,107 INFO L204 MainTranslator]: Completed translation [2024-10-24 09:37:20,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20 WrapperNode [2024-10-24 09:37:20,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 09:37:20,109 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 09:37:20,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 09:37:20,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 09:37:20,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,125 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,160 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102 [2024-10-24 09:37:20,161 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 09:37:20,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 09:37:20,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 09:37:20,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 09:37:20,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,174 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,187 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]. [2024-10-24 09:37:20,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 09:37:20,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 09:37:20,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 09:37:20,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 09:37:20,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (1/1) ... [2024-10-24 09:37:20,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 09:37:20,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 09:37:20,254 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) [2024-10-24 09:37:20,259 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 [2024-10-24 09:37:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 09:37:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 09:37:20,314 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 09:37:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 09:37:20,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 09:37:20,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 09:37:20,410 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 09:37:20,412 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 09:37:20,638 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-10-24 09:37:20,639 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 09:37:20,694 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 09:37:20,694 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 09:37:20,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:37:20 BoogieIcfgContainer [2024-10-24 09:37:20,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 09:37:20,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 09:37:20,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 09:37:20,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 09:37:20,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:37:19" (1/3) ... [2024-10-24 09:37:20,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc7ba64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:37:20, skipping insertion in model container [2024-10-24 09:37:20,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:37:20" (2/3) ... [2024-10-24 09:37:20,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc7ba64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:37:20, skipping insertion in model container [2024-10-24 09:37:20,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:37:20" (3/3) ... [2024-10-24 09:37:20,707 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-42.i [2024-10-24 09:37:20,727 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 09:37:20,727 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 09:37:20,790 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 09:37:20,796 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;@352a3d5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 09:37:20,796 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 09:37:20,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-24 09:37:20,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 09:37:20,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:37:20,812 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 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] [2024-10-24 09:37:20,813 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:37:20,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:37:20,817 INFO L85 PathProgramCache]: Analyzing trace with hash -619036675, now seen corresponding path program 1 times [2024-10-24 09:37:20,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:37:20,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993506999] [2024-10-24 09:37:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:37:20,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:37:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:37:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:37:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 09:37:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 09:37:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 09:37:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-24 09:37:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 09:37:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 09:37:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 09:37:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 09:37:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-24 09:37:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 09:37:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 09:37:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 09:37:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 09:37:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-24 09:37:21,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:37:21,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993506999] [2024-10-24 09:37:21,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993506999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 09:37:21,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 09:37:21,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 09:37:21,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98877680] [2024-10-24 09:37:21,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 09:37:21,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 09:37:21,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:37:21,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 09:37:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 09:37:21,190 INFO L87 Difference]: Start difference. First operand has 41 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-10-24 09:37:21,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:37:21,236 INFO L93 Difference]: Finished difference Result 79 states and 137 transitions. [2024-10-24 09:37:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 09:37:21,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2024-10-24 09:37:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:37:21,244 INFO L225 Difference]: With dead ends: 79 [2024-10-24 09:37:21,244 INFO L226 Difference]: Without dead ends: 39 [2024-10-24 09:37:21,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 09:37:21,252 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 09:37:21,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 09:37:21,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-24 09:37:21,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-10-24 09:37:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-24 09:37:21,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 57 transitions. [2024-10-24 09:37:21,298 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 57 transitions. Word has length 92 [2024-10-24 09:37:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:37:21,298 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 57 transitions. [2024-10-24 09:37:21,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-10-24 09:37:21,299 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 57 transitions. [2024-10-24 09:37:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 09:37:21,302 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:37:21,302 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 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] [2024-10-24 09:37:21,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 09:37:21,303 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:37:21,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:37:21,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1717090753, now seen corresponding path program 1 times [2024-10-24 09:37:21,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:37:21,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39444842] [2024-10-24 09:37:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:37:21,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:37:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:37:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:37:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 09:37:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 09:37:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 09:37:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-24 09:37:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 09:37:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 09:37:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 09:37:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 09:37:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-24 09:37:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 09:37:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 09:37:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 09:37:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 09:37:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-24 09:37:21,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:37:21,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39444842] [2024-10-24 09:37:21,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39444842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 09:37:21,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 09:37:21,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 09:37:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992928081] [2024-10-24 09:37:21,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 09:37:21,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 09:37:21,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:37:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 09:37:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 09:37:21,653 INFO L87 Difference]: Start difference. First operand 39 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-10-24 09:37:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:37:21,712 INFO L93 Difference]: Finished difference Result 107 states and 158 transitions. [2024-10-24 09:37:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 09:37:21,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 92 [2024-10-24 09:37:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:37:21,716 INFO L225 Difference]: With dead ends: 107 [2024-10-24 09:37:21,716 INFO L226 Difference]: Without dead ends: 69 [2024-10-24 09:37:21,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 09:37:21,720 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 52 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 09:37:21,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 135 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 09:37:21,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-24 09:37:21,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 39. [2024-10-24 09:37:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-24 09:37:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2024-10-24 09:37:21,735 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 92 [2024-10-24 09:37:21,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:37:21,737 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2024-10-24 09:37:21,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-10-24 09:37:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2024-10-24 09:37:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 09:37:21,741 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:37:21,741 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 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] [2024-10-24 09:37:21,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 09:37:21,742 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:37:21,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:37:21,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1717031171, now seen corresponding path program 1 times [2024-10-24 09:37:21,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:37:21,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252743926] [2024-10-24 09:37:21,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:37:21,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:37:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:37:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:37:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 09:37:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 09:37:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 09:37:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-24 09:37:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 09:37:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 09:37:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 09:37:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 09:37:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-24 09:37:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 09:37:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 09:37:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 09:37:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 09:37:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-24 09:37:24,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:37:24,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252743926] [2024-10-24 09:37:24,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252743926] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 09:37:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962159337] [2024-10-24 09:37:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:37:24,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 09:37:24,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 09:37:24,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 09:37:24,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 09:37:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:37:24,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-24 09:37:24,898 INFO L278 TraceCheckSpWp]: Computing forward predicates...