./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_100-while_file-98.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_100-while_file-98.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 c9772336b4f5bbc4418fabef46aa66f1fadeb5e29c51f3493f820d65f03963e5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 09:23:12,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 09:23:12,779 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 09:23:12,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 09:23:12,787 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 09:23:12,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 09:23:12,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 09:23:12,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 09:23:12,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 09:23:12,826 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 09:23:12,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 09:23:12,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 09:23:12,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 09:23:12,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 09:23:12,829 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 09:23:12,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 09:23:12,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 09:23:12,830 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 09:23:12,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 09:23:12,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 09:23:12,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 09:23:12,836 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 09:23:12,836 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 09:23:12,836 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 09:23:12,836 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 09:23:12,837 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 09:23:12,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 09:23:12,837 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 09:23:12,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 09:23:12,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 09:23:12,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 09:23:12,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 09:23:12,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 09:23:12,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 09:23:12,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 09:23:12,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 09:23:12,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 09:23:12,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 09:23:12,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 09:23:12,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 09:23:12,841 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 09:23:12,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 09:23:12,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9772336b4f5bbc4418fabef46aa66f1fadeb5e29c51f3493f820d65f03963e5 [2024-10-24 09:23:13,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 09:23:13,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 09:23:13,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 09:23:13,156 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 09:23:13,157 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 09:23:13,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i [2024-10-24 09:23:14,606 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 09:23:14,827 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 09:23:14,830 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-98.i [2024-10-24 09:23:14,845 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec2e978f/1aeea5aa6b9d46f6ac9b1fbe87aec675/FLAGe8a3bd5c4 [2024-10-24 09:23:14,857 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec2e978f/1aeea5aa6b9d46f6ac9b1fbe87aec675 [2024-10-24 09:23:14,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 09:23:14,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 09:23:14,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 09:23:14,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 09:23:14,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 09:23:14,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:23:14" (1/1) ... [2024-10-24 09:23:14,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc17cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:14, skipping insertion in model container [2024-10-24 09:23:14,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:23:14" (1/1) ... [2024-10-24 09:23:14,909 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 09:23:15,078 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_100-while_file-98.i[916,929] [2024-10-24 09:23:15,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 09:23:15,226 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 09:23:15,238 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_100-while_file-98.i[916,929] [2024-10-24 09:23:15,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 09:23:15,319 INFO L204 MainTranslator]: Completed translation [2024-10-24 09:23:15,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15 WrapperNode [2024-10-24 09:23:15,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 09:23:15,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 09:23:15,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 09:23:15,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 09:23:15,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,373 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 179 [2024-10-24 09:23:15,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 09:23:15,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 09:23:15,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 09:23:15,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 09:23:15,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,400 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,418 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 09:23:15,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 09:23:15,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 09:23:15,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 09:23:15,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 09:23:15,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (1/1) ... [2024-10-24 09:23:15,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 09:23:15,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 09:23:15,485 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 09:23:15,490 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 09:23:15,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 09:23:15,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 09:23:15,542 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 09:23:15,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 09:23:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 09:23:15,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 09:23:15,644 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 09:23:15,648 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 09:23:16,085 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-10-24 09:23:16,085 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 09:23:16,154 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 09:23:16,156 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 09:23:16,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:23:16 BoogieIcfgContainer [2024-10-24 09:23:16,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 09:23:16,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 09:23:16,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 09:23:16,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 09:23:16,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:23:14" (1/3) ... [2024-10-24 09:23:16,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feede44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:23:16, skipping insertion in model container [2024-10-24 09:23:16,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:23:15" (2/3) ... [2024-10-24 09:23:16,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feede44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:23:16, skipping insertion in model container [2024-10-24 09:23:16,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:23:16" (3/3) ... [2024-10-24 09:23:16,166 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-98.i [2024-10-24 09:23:16,184 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 09:23:16,184 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 09:23:16,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 09:23:16,263 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;@50ca49d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 09:23:16,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 09:23:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 45 states have (on average 1.488888888888889) internal successors, (67), 46 states have internal predecessors, (67), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-24 09:23:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-24 09:23:16,284 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:23:16,285 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 09:23:16,286 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:23:16,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:23:16,293 INFO L85 PathProgramCache]: Analyzing trace with hash -919665660, now seen corresponding path program 1 times [2024-10-24 09:23:16,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:23:16,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433775875] [2024-10-24 09:23:16,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:23:16,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:23:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:23:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:23:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 09:23:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 09:23:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 09:23:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 09:23:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 09:23:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 09:23:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 09:23:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 09:23:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 09:23:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 09:23:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 09:23:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 09:23:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 09:23:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 09:23:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 09:23:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-24 09:23:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 09:23:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 09:23:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-24 09:23:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-24 09:23:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 09:23:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-24 09:23:16,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:23:16,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433775875] [2024-10-24 09:23:16,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433775875] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 09:23:16,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 09:23:16,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 09:23:16,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029377516] [2024-10-24 09:23:16,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 09:23:16,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 09:23:16,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:23:16,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 09:23:16,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 09:23:16,835 INFO L87 Difference]: Start difference. First operand has 71 states, 45 states have (on average 1.488888888888889) internal successors, (67), 46 states have internal predecessors, (67), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-10-24 09:23:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:23:16,891 INFO L93 Difference]: Finished difference Result 139 states and 247 transitions. [2024-10-24 09:23:16,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 09:23:16,894 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2024-10-24 09:23:16,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:23:16,905 INFO L225 Difference]: With dead ends: 139 [2024-10-24 09:23:16,906 INFO L226 Difference]: Without dead ends: 69 [2024-10-24 09:23:16,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 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 09:23:16,916 INFO L432 NwaCegarLoop]: 105 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, 105 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 09:23:16,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 09:23:16,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-24 09:23:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-24 09:23:16,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-24 09:23:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 108 transitions. [2024-10-24 09:23:16,985 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 108 transitions. Word has length 148 [2024-10-24 09:23:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:23:16,986 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 108 transitions. [2024-10-24 09:23:16,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-10-24 09:23:16,986 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 108 transitions. [2024-10-24 09:23:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-24 09:23:16,990 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:23:16,991 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 09:23:16,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 09:23:16,991 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:23:16,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:23:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash 251313334, now seen corresponding path program 1 times [2024-10-24 09:23:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:23:16,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725005744] [2024-10-24 09:23:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:23:16,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:23:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:23:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:23:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 09:23:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 09:23:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 09:23:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 09:23:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 09:23:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 09:23:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 09:23:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 09:23:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 09:23:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 09:23:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 09:23:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 09:23:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 09:23:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 09:23:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 09:23:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-24 09:23:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 09:23:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 09:23:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-24 09:23:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-24 09:23:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 09:23:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-24 09:23:17,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:23:17,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725005744] [2024-10-24 09:23:17,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725005744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 09:23:17,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 09:23:17,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 09:23:17,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957735033] [2024-10-24 09:23:17,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 09:23:17,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 09:23:17,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:23:17,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 09:23:17,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 09:23:17,451 INFO L87 Difference]: Start difference. First operand 69 states and 108 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-10-24 09:23:17,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:23:17,516 INFO L93 Difference]: Finished difference Result 203 states and 318 transitions. [2024-10-24 09:23:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 09:23:17,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 148 [2024-10-24 09:23:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:23:17,522 INFO L225 Difference]: With dead ends: 203 [2024-10-24 09:23:17,522 INFO L226 Difference]: Without dead ends: 135 [2024-10-24 09:23:17,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 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 09:23:17,525 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 97 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 09:23:17,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 280 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 09:23:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-10-24 09:23:17,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2024-10-24 09:23:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 84 states have (on average 1.369047619047619) internal successors, (115), 84 states have internal predecessors, (115), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-24 09:23:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 207 transitions. [2024-10-24 09:23:17,553 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 207 transitions. Word has length 148 [2024-10-24 09:23:17,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:23:17,554 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 207 transitions. [2024-10-24 09:23:17,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-10-24 09:23:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 207 transitions. [2024-10-24 09:23:17,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-24 09:23:17,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:23:17,558 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 09:23:17,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 09:23:17,558 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:23:17,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:23:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash 308571636, now seen corresponding path program 1 times [2024-10-24 09:23:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:23:17,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618872047] [2024-10-24 09:23:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:23:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:23:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:23:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:23:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 09:23:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 09:23:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 09:23:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 09:23:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 09:23:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 09:23:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 09:23:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 09:23:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 09:23:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 09:23:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 09:23:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 09:23:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 09:23:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 09:23:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 09:23:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-24 09:23:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 09:23:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 09:23:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-24 09:23:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-24 09:23:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 09:23:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-24 09:23:18,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:23:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618872047] [2024-10-24 09:23:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618872047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 09:23:18,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 09:23:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 09:23:18,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269246475] [2024-10-24 09:23:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 09:23:18,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 09:23:18,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:23:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 09:23:18,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 09:23:18,772 INFO L87 Difference]: Start difference. First operand 133 states and 207 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-10-24 09:23:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:23:19,042 INFO L93 Difference]: Finished difference Result 359 states and 555 transitions. [2024-10-24 09:23:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 09:23:19,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2024-10-24 09:23:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:23:19,046 INFO L225 Difference]: With dead ends: 359 [2024-10-24 09:23:19,050 INFO L226 Difference]: Without dead ends: 227 [2024-10-24 09:23:19,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 09:23:19,052 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 158 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 09:23:19,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 381 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 09:23:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-24 09:23:19,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 203. [2024-10-24 09:23:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 129 states have (on average 1.372093023255814) internal successors, (177), 129 states have internal predecessors, (177), 69 states have call successors, (69), 4 states have call predecessors, (69), 4 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-10-24 09:23:19,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 315 transitions. [2024-10-24 09:23:19,113 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 315 transitions. Word has length 148 [2024-10-24 09:23:19,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:23:19,114 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 315 transitions. [2024-10-24 09:23:19,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-10-24 09:23:19,114 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 315 transitions. [2024-10-24 09:23:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-24 09:23:19,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:23:19,118 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 09:23:19,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 09:23:19,121 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:23:19,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:23:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash -712496718, now seen corresponding path program 1 times [2024-10-24 09:23:19,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:23:19,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116604405] [2024-10-24 09:23:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:23:19,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:23:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:23:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:23:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 09:23:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 09:23:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 09:23:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 09:23:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 09:23:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 09:23:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 09:23:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 09:23:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 09:23:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 09:23:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 09:23:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 09:23:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 09:23:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 09:23:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 09:23:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-24 09:23:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 09:23:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 09:23:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-24 09:23:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-24 09:23:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 09:23:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-10-24 09:23:19,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:23:19,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116604405] [2024-10-24 09:23:19,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116604405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 09:23:19,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41969037] [2024-10-24 09:23:19,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:23:19,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 09:23:19,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 09:23:19,525 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 09:23:19,526 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 09:23:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:19,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 09:23:19,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 09:23:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 498 proven. 24 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-10-24 09:23:19,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 09:23:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-10-24 09:23:20,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41969037] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 09:23:20,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 09:23:20,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-10-24 09:23:20,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97019787] [2024-10-24 09:23:20,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 09:23:20,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 09:23:20,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:23:20,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 09:23:20,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 09:23:20,070 INFO L87 Difference]: Start difference. First operand 203 states and 315 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-10-24 09:23:20,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:23:20,308 INFO L93 Difference]: Finished difference Result 431 states and 652 transitions. [2024-10-24 09:23:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 09:23:20,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 148 [2024-10-24 09:23:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:23:20,312 INFO L225 Difference]: With dead ends: 431 [2024-10-24 09:23:20,312 INFO L226 Difference]: Without dead ends: 229 [2024-10-24 09:23:20,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-10-24 09:23:20,314 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 156 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 09:23:20,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 178 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 09:23:20,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-10-24 09:23:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 215. [2024-10-24 09:23:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 138 states have (on average 1.3115942028985508) internal successors, (181), 138 states have internal predecessors, (181), 69 states have call successors, (69), 7 states have call predecessors, (69), 7 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-10-24 09:23:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 319 transitions. [2024-10-24 09:23:20,341 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 319 transitions. Word has length 148 [2024-10-24 09:23:20,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:23:20,342 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 319 transitions. [2024-10-24 09:23:20,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-10-24 09:23:20,342 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 319 transitions. [2024-10-24 09:23:20,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-24 09:23:20,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:23:20,344 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 09:23:20,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 09:23:20,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 09:23:20,545 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:23:20,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:23:20,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1964510333, now seen corresponding path program 1 times [2024-10-24 09:23:20,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:23:20,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566131056] [2024-10-24 09:23:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:23:20,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:23:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:23:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:23:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 09:23:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 09:23:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 09:23:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 09:23:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 09:23:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 09:23:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 09:23:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 09:23:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 09:23:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 09:23:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 09:23:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 09:23:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 09:23:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 09:23:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 09:23:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-24 09:23:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 09:23:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 09:23:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-24 09:23:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-24 09:23:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 09:23:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-10-24 09:23:21,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:23:21,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566131056] [2024-10-24 09:23:21,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566131056] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 09:23:21,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199477602] [2024-10-24 09:23:21,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:23:21,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 09:23:21,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 09:23:21,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 09:23:21,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 09:23:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:21,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 09:23:21,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 09:23:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 372 proven. 51 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-10-24 09:23:22,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 09:23:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-10-24 09:23:22,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199477602] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 09:23:22,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 09:23:22,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 18 [2024-10-24 09:23:22,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625073371] [2024-10-24 09:23:22,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 09:23:22,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 09:23:22,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:23:22,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 09:23:22,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-10-24 09:23:22,296 INFO L87 Difference]: Start difference. First operand 215 states and 319 transitions. Second operand has 18 states, 17 states have (on average 5.176470588235294) internal successors, (88), 18 states have internal predecessors, (88), 7 states have call successors, (69), 3 states have call predecessors, (69), 6 states have return successors, (69), 6 states have call predecessors, (69), 7 states have call successors, (69) [2024-10-24 09:23:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 09:23:23,149 INFO L93 Difference]: Finished difference Result 646 states and 952 transitions. [2024-10-24 09:23:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 09:23:23,150 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.176470588235294) internal successors, (88), 18 states have internal predecessors, (88), 7 states have call successors, (69), 3 states have call predecessors, (69), 6 states have return successors, (69), 6 states have call predecessors, (69), 7 states have call successors, (69) Word has length 149 [2024-10-24 09:23:23,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 09:23:23,154 INFO L225 Difference]: With dead ends: 646 [2024-10-24 09:23:23,155 INFO L226 Difference]: Without dead ends: 432 [2024-10-24 09:23:23,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2024-10-24 09:23:23,156 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 326 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 09:23:23,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 505 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 09:23:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-10-24 09:23:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 271. [2024-10-24 09:23:23,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 167 states have (on average 1.2574850299401197) internal successors, (210), 167 states have internal predecessors, (210), 92 states have call successors, (92), 11 states have call predecessors, (92), 11 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-10-24 09:23:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 394 transitions. [2024-10-24 09:23:23,210 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 394 transitions. Word has length 149 [2024-10-24 09:23:23,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 09:23:23,211 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 394 transitions. [2024-10-24 09:23:23,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.176470588235294) internal successors, (88), 18 states have internal predecessors, (88), 7 states have call successors, (69), 3 states have call predecessors, (69), 6 states have return successors, (69), 6 states have call predecessors, (69), 7 states have call successors, (69) [2024-10-24 09:23:23,212 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 394 transitions. [2024-10-24 09:23:23,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-24 09:23:23,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 09:23:23,213 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 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, 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 09:23:23,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 09:23:23,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 09:23:23,418 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 09:23:23,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 09:23:23,418 INFO L85 PathProgramCache]: Analyzing trace with hash 742109061, now seen corresponding path program 1 times [2024-10-24 09:23:23,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 09:23:23,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147548626] [2024-10-24 09:23:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:23:23,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 09:23:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 09:23:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 09:23:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 09:23:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 09:23:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 09:23:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 09:23:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 09:23:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 09:23:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 09:23:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 09:23:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 09:23:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 09:23:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 09:23:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 09:23:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 09:23:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 09:23:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-24 09:23:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-24 09:23:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 09:23:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 09:23:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-24 09:23:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:32,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-24 09:23:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:33,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 09:23:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 129 proven. 51 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2024-10-24 09:23:33,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 09:23:33,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147548626] [2024-10-24 09:23:33,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147548626] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 09:23:33,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177226613] [2024-10-24 09:23:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 09:23:33,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 09:23:33,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 09:23:33,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 09:23:33,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 09:23:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 09:23:33,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-24 09:23:33,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 09:23:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 537 proven. 183 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2024-10-24 09:23:40,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 09:24:00,441 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-24 09:24:33,633 WARN L286 SmtUtils]: Spent 17.13s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-24 09:24:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177226613] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 09:24:33,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 09:24:33,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29] total 43 [2024-10-24 09:24:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785647670] [2024-10-24 09:24:33,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 09:24:33,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-24 09:24:33,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 09:24:33,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-24 09:24:33,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=2399, Unknown=1, NotChecked=0, Total=2756 [2024-10-24 09:24:33,639 INFO L87 Difference]: Start difference. First operand 271 states and 394 transitions. Second operand has 43 states, 41 states have (on average 2.292682926829268) internal successors, (94), 37 states have internal predecessors, (94), 13 states have call successors, (46), 7 states have call predecessors, (46), 10 states have return successors, (46), 14 states have call predecessors, (46), 13 states have call successors, (46) [2024-10-24 09:24:38,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]