./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.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 a50f9ed11f10306280cf680a91856fa84d69e79835a7539c0719fe95b31ba9a8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:36:50,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:36:50,896 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:36:50,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:36:50,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:36:50,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:36:50,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:36:50,950 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:36:50,950 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:36:50,950 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:36:50,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:36:50,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:36:50,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:36:50,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:36:50,952 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:36:50,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:36:50,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:36:50,952 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:36:50,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:36:50,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:36:50,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:36:50,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:36:50,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:36:50,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:36:50,957 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:36:50,957 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:36:50,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:36:50,958 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:36:50,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:36:50,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:36:50,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:36:50,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:36:50,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:36:50,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:36:50,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:36:50,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:36:50,959 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:36:50,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:36:50,960 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:36:50,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:36:50,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:36:50,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:36:50,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50f9ed11f10306280cf680a91856fa84d69e79835a7539c0719fe95b31ba9a8 [2024-11-18 22:36:51,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:36:51,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:36:51,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:36:51,201 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:36:51,201 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:36:51,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i [2024-11-18 22:36:52,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:36:52,833 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:36:52,834 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i [2024-11-18 22:36:52,841 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34d90f89c/a88e470021ea436fbdd4599505ca153f/FLAG9074ad945 [2024-11-18 22:36:53,235 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34d90f89c/a88e470021ea436fbdd4599505ca153f [2024-11-18 22:36:53,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:36:53,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:36:53,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:36:53,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:36:53,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:36:53,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677cba08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53, skipping insertion in model container [2024-11-18 22:36:53,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,277 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:36:53,551 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i[916,929] [2024-11-18 22:36:53,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:36:53,676 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:36:53,693 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i[916,929] [2024-11-18 22:36:53,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:36:53,746 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:36:53,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53 WrapperNode [2024-11-18 22:36:53,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:36:53,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:36:53,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:36:53,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:36:53,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,827 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 390 [2024-11-18 22:36:53,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:36:53,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:36:53,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:36:53,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:36:53,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,852 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,890 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 22:36:53,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:36:53,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:36:53,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:36:53,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:36:53,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (1/1) ... [2024-11-18 22:36:53,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:36:53,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:36:53,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 22:36:53,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 22:36:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:36:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:36:54,036 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:36:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:36:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:36:54,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:36:54,121 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:36:54,123 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:36:54,642 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-18 22:36:54,643 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:36:54,659 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:36:54,659 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:36:54,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:36:54 BoogieIcfgContainer [2024-11-18 22:36:54,660 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:36:54,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:36:54,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:36:54,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:36:54,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:36:53" (1/3) ... [2024-11-18 22:36:54,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522b53ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:36:54, skipping insertion in model container [2024-11-18 22:36:54,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:53" (2/3) ... [2024-11-18 22:36:54,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522b53ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:36:54, skipping insertion in model container [2024-11-18 22:36:54,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:36:54" (3/3) ... [2024-11-18 22:36:54,667 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-68.i [2024-11-18 22:36:54,679 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:36:54,680 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:36:54,726 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:36:54,731 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;@26970a23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:36:54,731 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:36:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 121 states have internal predecessors, (175), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-18 22:36:54,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-18 22:36:54,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:54,790 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:36:54,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:54,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:54,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1492570003, now seen corresponding path program 1 times [2024-11-18 22:36:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:54,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303804280] [2024-11-18 22:36:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:54,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-11-18 22:36:55,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303804280] [2024-11-18 22:36:55,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303804280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:36:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958459414] [2024-11-18 22:36:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:55,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:36:55,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:36:55,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:36:55,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 22:36:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:55,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:36:55,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:36:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-11-18 22:36:55,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:36:55,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958459414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:55,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:36:55,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:36:55,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487704097] [2024-11-18 22:36:55,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:55,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:36:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:55,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:36:55,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:36:55,370 INFO L87 Difference]: Start difference. First operand has 163 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 121 states have internal predecessors, (175), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 22:36:55,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:55,414 INFO L93 Difference]: Finished difference Result 319 states and 544 transitions. [2024-11-18 22:36:55,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:36:55,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) Word has length 269 [2024-11-18 22:36:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:55,424 INFO L225 Difference]: With dead ends: 319 [2024-11-18 22:36:55,424 INFO L226 Difference]: Without dead ends: 159 [2024-11-18 22:36:55,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:36:55,431 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:55,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:36:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-18 22:36:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-18 22:36:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.435897435897436) internal successors, (168), 117 states have internal predecessors, (168), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-18 22:36:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 248 transitions. [2024-11-18 22:36:55,478 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 248 transitions. Word has length 269 [2024-11-18 22:36:55,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:55,479 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 248 transitions. [2024-11-18 22:36:55,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 22:36:55,479 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 248 transitions. [2024-11-18 22:36:55,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-18 22:36:55,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:55,508 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:36:55,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 22:36:55,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 22:36:55,710 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:55,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:55,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1558472791, now seen corresponding path program 1 times [2024-11-18 22:36:55,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:55,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418929723] [2024-11-18 22:36:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:55,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 22:36:55,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:55,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418929723] [2024-11-18 22:36:55,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418929723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:55,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:55,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:36:55,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135411338] [2024-11-18 22:36:55,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:55,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:36:55,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:36:55,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:36:55,993 INFO L87 Difference]: Start difference. First operand 159 states and 248 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 22:36:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:56,026 INFO L93 Difference]: Finished difference Result 315 states and 493 transitions. [2024-11-18 22:36:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:36:56,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 269 [2024-11-18 22:36:56,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:56,030 INFO L225 Difference]: With dead ends: 315 [2024-11-18 22:36:56,030 INFO L226 Difference]: Without dead ends: 159 [2024-11-18 22:36:56,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:36:56,032 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:56,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:36:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-18 22:36:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-18 22:36:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.4273504273504274) internal successors, (167), 117 states have internal predecessors, (167), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-18 22:36:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 247 transitions. [2024-11-18 22:36:56,044 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 247 transitions. Word has length 269 [2024-11-18 22:36:56,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:56,046 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 247 transitions. [2024-11-18 22:36:56,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 22:36:56,046 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 247 transitions. [2024-11-18 22:36:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-18 22:36:56,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:56,054 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:36:56,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:36:56,055 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:56,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1952839577, now seen corresponding path program 1 times [2024-11-18 22:36:56,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:56,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657102074] [2024-11-18 22:36:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:56,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 22:36:58,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657102074] [2024-11-18 22:36:58,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657102074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:58,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:58,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 22:36:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575256813] [2024-11-18 22:36:58,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:58,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 22:36:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:58,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 22:36:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:36:58,123 INFO L87 Difference]: Start difference. First operand 159 states and 247 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 22:36:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:59,035 INFO L93 Difference]: Finished difference Result 477 states and 733 transitions. [2024-11-18 22:36:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:36:59,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 269 [2024-11-18 22:36:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:59,039 INFO L225 Difference]: With dead ends: 477 [2024-11-18 22:36:59,039 INFO L226 Difference]: Without dead ends: 321 [2024-11-18 22:36:59,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:36:59,041 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 542 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:59,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 589 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 22:36:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-18 22:36:59,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 296. [2024-11-18 22:36:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 250 states have (on average 1.476) internal successors, (369), 251 states have internal predecessors, (369), 43 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 22:36:59,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 455 transitions. [2024-11-18 22:36:59,061 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 455 transitions. Word has length 269 [2024-11-18 22:36:59,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:59,061 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 455 transitions. [2024-11-18 22:36:59,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-18 22:36:59,062 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 455 transitions. [2024-11-18 22:36:59,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-18 22:36:59,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:59,068 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:36:59,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:36:59,068 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:59,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:59,069 INFO L85 PathProgramCache]: Analyzing trace with hash 753779817, now seen corresponding path program 1 times [2024-11-18 22:36:59,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:59,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193960731] [2024-11-18 22:36:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:59,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-18 22:36:59,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:59,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193960731] [2024-11-18 22:36:59,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193960731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:36:59,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959190473] [2024-11-18 22:36:59,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:59,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:36:59,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:36:59,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:36:59,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 22:36:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:59,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 22:36:59,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:37:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1543 proven. 147 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2024-11-18 22:37:00,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:37:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 81 proven. 150 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-11-18 22:37:00,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959190473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:37:00,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:37:00,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-11-18 22:37:00,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589081106] [2024-11-18 22:37:00,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:37:00,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 22:37:00,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:00,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 22:37:00,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-18 22:37:00,576 INFO L87 Difference]: Start difference. First operand 296 states and 455 transitions. Second operand has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) [2024-11-18 22:37:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:01,125 INFO L93 Difference]: Finished difference Result 553 states and 843 transitions. [2024-11-18 22:37:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 22:37:01,126 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) Word has length 269 [2024-11-18 22:37:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:01,129 INFO L225 Difference]: With dead ends: 553 [2024-11-18 22:37:01,129 INFO L226 Difference]: Without dead ends: 260 [2024-11-18 22:37:01,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=235, Invalid=521, Unknown=0, NotChecked=0, Total=756 [2024-11-18 22:37:01,131 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 535 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:01,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 489 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:37:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-18 22:37:01,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2024-11-18 22:37:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 209 states have (on average 1.3588516746411483) internal successors, (284), 210 states have internal predecessors, (284), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 22:37:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 370 transitions. [2024-11-18 22:37:01,163 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 370 transitions. Word has length 269 [2024-11-18 22:37:01,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:01,164 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 370 transitions. [2024-11-18 22:37:01,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) [2024-11-18 22:37:01,164 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 370 transitions. [2024-11-18 22:37:01,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 22:37:01,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:01,167 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:37:01,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 22:37:01,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 22:37:01,372 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:01,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:01,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1064010365, now seen corresponding path program 1 times [2024-11-18 22:37:01,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:01,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021002099] [2024-11-18 22:37:01,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:01,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 22:37:02,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:37:02,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021002099] [2024-11-18 22:37:02,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021002099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:37:02,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:37:02,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 22:37:02,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859382035] [2024-11-18 22:37:02,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:37:02,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 22:37:02,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:02,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 22:37:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:37:02,567 INFO L87 Difference]: Start difference. First operand 258 states and 370 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 22:37:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:03,472 INFO L93 Difference]: Finished difference Result 588 states and 838 transitions. [2024-11-18 22:37:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:37:03,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 271 [2024-11-18 22:37:03,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:03,475 INFO L225 Difference]: With dead ends: 588 [2024-11-18 22:37:03,475 INFO L226 Difference]: Without dead ends: 333 [2024-11-18 22:37:03,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:37:03,476 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 567 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:03,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 555 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 22:37:03,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-18 22:37:03,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 271. [2024-11-18 22:37:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 222 states have (on average 1.3738738738738738) internal successors, (305), 223 states have internal predecessors, (305), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 22:37:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 391 transitions. [2024-11-18 22:37:03,493 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 391 transitions. Word has length 271 [2024-11-18 22:37:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:03,494 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 391 transitions. [2024-11-18 22:37:03,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 22:37:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 391 transitions. [2024-11-18 22:37:03,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 22:37:03,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:03,497 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:37:03,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 22:37:03,497 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:03,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:03,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1642609029, now seen corresponding path program 1 times [2024-11-18 22:37:03,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:03,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611903977] [2024-11-18 22:37:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:03,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 22:37:06,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:37:06,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611903977] [2024-11-18 22:37:06,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611903977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:37:06,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:37:06,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:37:06,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381280031] [2024-11-18 22:37:06,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:37:06,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:37:06,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:06,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:37:06,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:37:06,020 INFO L87 Difference]: Start difference. First operand 271 states and 391 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 22:37:07,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:07,818 INFO L93 Difference]: Finished difference Result 675 states and 959 transitions. [2024-11-18 22:37:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:37:07,819 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 271 [2024-11-18 22:37:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:07,822 INFO L225 Difference]: With dead ends: 675 [2024-11-18 22:37:07,826 INFO L226 Difference]: Without dead ends: 407 [2024-11-18 22:37:07,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2024-11-18 22:37:07,830 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 770 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:07,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 709 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 22:37:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-11-18 22:37:07,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 285. [2024-11-18 22:37:07,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 236 states have (on average 1.3771186440677967) internal successors, (325), 237 states have internal predecessors, (325), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 22:37:07,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 411 transitions. [2024-11-18 22:37:07,861 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 411 transitions. Word has length 271 [2024-11-18 22:37:07,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:07,861 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 411 transitions. [2024-11-18 22:37:07,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 22:37:07,863 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 411 transitions. [2024-11-18 22:37:07,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 22:37:07,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:07,867 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:37:07,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 22:37:07,867 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:07,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash 362745351, now seen corresponding path program 1 times [2024-11-18 22:37:07,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325052622] [2024-11-18 22:37:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:07,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 84 proven. 33 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-18 22:37:08,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:37:08,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325052622] [2024-11-18 22:37:08,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325052622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:37:08,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59696636] [2024-11-18 22:37:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:08,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:37:08,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:37:08,305 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:37:08,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 22:37:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:08,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-18 22:37:08,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:37:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1456 proven. 57 refuted. 0 times theorem prover too weak. 1607 trivial. 0 not checked. [2024-11-18 22:37:09,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:37:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 228 proven. 3 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-11-18 22:37:10,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59696636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:37:10,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:37:10,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 20, 12] total 32 [2024-11-18 22:37:10,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539728833] [2024-11-18 22:37:10,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:37:10,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 22:37:10,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 22:37:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2024-11-18 22:37:10,644 INFO L87 Difference]: Start difference. First operand 285 states and 411 transitions. Second operand has 32 states, 31 states have (on average 4.67741935483871) internal successors, (145), 29 states have internal predecessors, (145), 6 states have call successors, (62), 5 states have call predecessors, (62), 10 states have return successors, (63), 8 states have call predecessors, (63), 6 states have call successors, (63) [2024-11-18 22:37:16,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:16,676 INFO L93 Difference]: Finished difference Result 1168 states and 1647 transitions. [2024-11-18 22:37:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-18 22:37:16,677 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.67741935483871) internal successors, (145), 29 states have internal predecessors, (145), 6 states have call successors, (62), 5 states have call predecessors, (62), 10 states have return successors, (63), 8 states have call predecessors, (63), 6 states have call successors, (63) Word has length 271 [2024-11-18 22:37:16,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:16,683 INFO L225 Difference]: With dead ends: 1168 [2024-11-18 22:37:16,684 INFO L226 Difference]: Without dead ends: 886 [2024-11-18 22:37:16,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2495 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2066, Invalid=6490, Unknown=0, NotChecked=0, Total=8556 [2024-11-18 22:37:16,687 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 1372 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 4192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:16,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 2334 Invalid, 4192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 3789 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-18 22:37:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-18 22:37:16,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 321. [2024-11-18 22:37:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 266 states have (on average 1.3383458646616542) internal successors, (356), 267 states have internal predecessors, (356), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 22:37:16,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 442 transitions. [2024-11-18 22:37:16,754 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 442 transitions. Word has length 271 [2024-11-18 22:37:16,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:16,755 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 442 transitions. [2024-11-18 22:37:16,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.67741935483871) internal successors, (145), 29 states have internal predecessors, (145), 6 states have call successors, (62), 5 states have call predecessors, (62), 10 states have return successors, (63), 8 states have call predecessors, (63), 6 states have call successors, (63) [2024-11-18 22:37:16,755 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 442 transitions. [2024-11-18 22:37:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-18 22:37:16,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:16,757 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:37:16,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 22:37:16,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:37:16,963 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:16,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:16,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1437161110, now seen corresponding path program 1 times [2024-11-18 22:37:16,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:16,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577142296] [2024-11-18 22:37:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:16,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:17,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 22:37:17,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:37:17,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577142296] [2024-11-18 22:37:17,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577142296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:37:17,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:37:17,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 22:37:17,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971326376] [2024-11-18 22:37:17,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:37:17,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 22:37:17,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:17,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 22:37:17,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:37:17,642 INFO L87 Difference]: Start difference. First operand 321 states and 442 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 22:37:18,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:18,479 INFO L93 Difference]: Finished difference Result 1293 states and 1803 transitions. [2024-11-18 22:37:18,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 22:37:18,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 272 [2024-11-18 22:37:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:18,489 INFO L225 Difference]: With dead ends: 1293 [2024-11-18 22:37:18,492 INFO L226 Difference]: Without dead ends: 975 [2024-11-18 22:37:18,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:37:18,494 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 401 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:18,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1773 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 22:37:18,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-18 22:37:18,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 536. [2024-11-18 22:37:18,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 464 states have (on average 1.3620689655172413) internal successors, (632), 467 states have internal predecessors, (632), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 54 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-18 22:37:18,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 746 transitions. [2024-11-18 22:37:18,575 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 746 transitions. Word has length 272 [2024-11-18 22:37:18,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:18,576 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 746 transitions. [2024-11-18 22:37:18,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 22:37:18,576 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 746 transitions. [2024-11-18 22:37:18,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-18 22:37:18,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:18,578 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:37:18,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 22:37:18,578 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:18,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:18,578 INFO L85 PathProgramCache]: Analyzing trace with hash 850752483, now seen corresponding path program 1 times [2024-11-18 22:37:18,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:18,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890499356] [2024-11-18 22:37:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:18,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 39 proven. 78 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-18 22:37:19,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:37:19,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890499356] [2024-11-18 22:37:19,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890499356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:37:19,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737296314] [2024-11-18 22:37:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:19,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:37:19,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:37:19,077 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:37:19,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 22:37:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:19,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 22:37:19,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:37:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1403 proven. 282 refuted. 0 times theorem prover too weak. 1435 trivial. 0 not checked. [2024-11-18 22:37:20,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:37:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-18 22:37:21,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737296314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:37:21,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:37:21,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 9] total 22 [2024-11-18 22:37:21,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39657841] [2024-11-18 22:37:21,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:37:21,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 22:37:21,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:21,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 22:37:21,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2024-11-18 22:37:21,563 INFO L87 Difference]: Start difference. First operand 536 states and 746 transitions. Second operand has 22 states, 22 states have (on average 9.136363636363637) internal successors, (201), 21 states have internal predecessors, (201), 7 states have call successors, (116), 4 states have call predecessors, (116), 7 states have return successors, (117), 7 states have call predecessors, (117), 7 states have call successors, (117) [2024-11-18 22:37:23,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:23,925 INFO L93 Difference]: Finished difference Result 1456 states and 1984 transitions. [2024-11-18 22:37:23,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-18 22:37:23,926 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.136363636363637) internal successors, (201), 21 states have internal predecessors, (201), 7 states have call successors, (116), 4 states have call predecessors, (116), 7 states have return successors, (117), 7 states have call predecessors, (117), 7 states have call successors, (117) Word has length 273 [2024-11-18 22:37:23,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:23,931 INFO L225 Difference]: With dead ends: 1456 [2024-11-18 22:37:23,931 INFO L226 Difference]: Without dead ends: 917 [2024-11-18 22:37:23,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 526 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=838, Invalid=2468, Unknown=0, NotChecked=0, Total=3306 [2024-11-18 22:37:23,933 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 1919 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:23,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 1144 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 22:37:23,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2024-11-18 22:37:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 735. [2024-11-18 22:37:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 612 states have (on average 1.3169934640522876) internal successors, (806), 617 states have internal predecessors, (806), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 91 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-18 22:37:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 998 transitions. [2024-11-18 22:37:24,040 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 998 transitions. Word has length 273 [2024-11-18 22:37:24,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:24,040 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 998 transitions. [2024-11-18 22:37:24,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.136363636363637) internal successors, (201), 21 states have internal predecessors, (201), 7 states have call successors, (116), 4 states have call predecessors, (116), 7 states have return successors, (117), 7 states have call predecessors, (117), 7 states have call successors, (117) [2024-11-18 22:37:24,041 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 998 transitions. [2024-11-18 22:37:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-18 22:37:24,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:24,042 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:37:24,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 22:37:24,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:37:24,243 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:24,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1845599263, now seen corresponding path program 1 times [2024-11-18 22:37:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:24,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700814002] [2024-11-18 22:37:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 30 proven. 87 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-18 22:37:24,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:37:24,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700814002] [2024-11-18 22:37:24,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700814002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:37:24,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775489731] [2024-11-18 22:37:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:24,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:37:24,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:37:24,904 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:37:24,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 22:37:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:25,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 22:37:25,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:37:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1985 proven. 87 refuted. 0 times theorem prover too weak. 1048 trivial. 0 not checked. [2024-11-18 22:37:25,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:37:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 246 proven. 96 refuted. 0 times theorem prover too weak. 2778 trivial. 0 not checked. [2024-11-18 22:37:26,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775489731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:37:26,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:37:26,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 12] total 24 [2024-11-18 22:37:26,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43588950] [2024-11-18 22:37:26,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:37:26,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 22:37:26,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:26,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 22:37:26,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-11-18 22:37:26,121 INFO L87 Difference]: Start difference. First operand 735 states and 998 transitions. Second operand has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 8 states have call successors, (90), 4 states have call predecessors, (90), 9 states have return successors, (92), 8 states have call predecessors, (92), 8 states have call successors, (92) [2024-11-18 22:37:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:29,855 INFO L93 Difference]: Finished difference Result 3695 states and 4866 transitions. [2024-11-18 22:37:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-18 22:37:29,855 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 8 states have call successors, (90), 4 states have call predecessors, (90), 9 states have return successors, (92), 8 states have call predecessors, (92), 8 states have call successors, (92) Word has length 273 [2024-11-18 22:37:29,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:29,866 INFO L225 Difference]: With dead ends: 3695 [2024-11-18 22:37:29,867 INFO L226 Difference]: Without dead ends: 2963 [2024-11-18 22:37:29,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4075 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2453, Invalid=9103, Unknown=0, NotChecked=0, Total=11556 [2024-11-18 22:37:29,873 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 3279 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:29,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3279 Valid, 1439 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 22:37:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2024-11-18 22:37:30,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1365. [2024-11-18 22:37:30,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1138 states have (on average 1.2706502636203867) internal successors, (1446), 1148 states have internal predecessors, (1446), 162 states have call successors, (162), 64 states have call predecessors, (162), 64 states have return successors, (162), 152 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-18 22:37:30,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1770 transitions. [2024-11-18 22:37:30,186 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1770 transitions. Word has length 273 [2024-11-18 22:37:30,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:30,187 INFO L471 AbstractCegarLoop]: Abstraction has 1365 states and 1770 transitions. [2024-11-18 22:37:30,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 8 states have call successors, (90), 4 states have call predecessors, (90), 9 states have return successors, (92), 8 states have call predecessors, (92), 8 states have call successors, (92) [2024-11-18 22:37:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1770 transitions. [2024-11-18 22:37:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-18 22:37:30,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:30,189 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:37:30,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 22:37:30,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 22:37:30,392 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:30,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:30,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1885778492, now seen corresponding path program 1 times [2024-11-18 22:37:30,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:30,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830153102] [2024-11-18 22:37:30,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:30,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 22:37:30,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:37:30,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830153102] [2024-11-18 22:37:30,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830153102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:37:30,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:37:30,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:37:30,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684183966] [2024-11-18 22:37:30,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:37:30,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:37:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:30,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:37:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:37:30,631 INFO L87 Difference]: Start difference. First operand 1365 states and 1770 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 22:37:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:31,168 INFO L93 Difference]: Finished difference Result 2887 states and 3765 transitions. [2024-11-18 22:37:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:37:31,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 276 [2024-11-18 22:37:31,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:31,180 INFO L225 Difference]: With dead ends: 2887 [2024-11-18 22:37:31,180 INFO L226 Difference]: Without dead ends: 1525 [2024-11-18 22:37:31,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:37:31,183 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 225 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:31,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 541 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:37:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2024-11-18 22:37:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1381. [2024-11-18 22:37:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1154 states have (on average 1.266897746967071) internal successors, (1462), 1164 states have internal predecessors, (1462), 162 states have call successors, (162), 64 states have call predecessors, (162), 64 states have return successors, (162), 152 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-18 22:37:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1786 transitions. [2024-11-18 22:37:31,502 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1786 transitions. Word has length 276 [2024-11-18 22:37:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:31,502 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 1786 transitions. [2024-11-18 22:37:31,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-18 22:37:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1786 transitions. [2024-11-18 22:37:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-18 22:37:31,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:31,505 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:37:31,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 22:37:31,505 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:31,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:31,506 INFO L85 PathProgramCache]: Analyzing trace with hash 603750470, now seen corresponding path program 1 times [2024-11-18 22:37:31,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:31,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179873093] [2024-11-18 22:37:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:31,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 423 proven. 270 refuted. 0 times theorem prover too weak. 2427 trivial. 0 not checked. [2024-11-18 22:37:45,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:37:45,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179873093] [2024-11-18 22:37:45,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179873093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:37:45,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166076286] [2024-11-18 22:37:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:45,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:37:45,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:37:45,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:37:45,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 22:37:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:45,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 22:37:45,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:37:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2045 proven. 150 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2024-11-18 22:37:46,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:37:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 207 proven. 135 refuted. 0 times theorem prover too weak. 2778 trivial. 0 not checked. [2024-11-18 22:37:47,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166076286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:37:47,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:37:47,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12, 12] total 42 [2024-11-18 22:37:47,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361620738] [2024-11-18 22:37:47,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:37:47,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-18 22:37:47,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-18 22:37:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1436, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 22:37:47,270 INFO L87 Difference]: Start difference. First operand 1381 states and 1786 transitions. Second operand has 42 states, 40 states have (on average 4.675) internal successors, (187), 40 states have internal predecessors, (187), 17 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 16 states have call predecessors, (109), 17 states have call successors, (109) [2024-11-18 22:37:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:54,142 INFO L93 Difference]: Finished difference Result 3993 states and 5127 transitions. [2024-11-18 22:37:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-18 22:37:54,143 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 4.675) internal successors, (187), 40 states have internal predecessors, (187), 17 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 16 states have call predecessors, (109), 17 states have call successors, (109) Word has length 276 [2024-11-18 22:37:54,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:54,151 INFO L225 Difference]: With dead ends: 3993 [2024-11-18 22:37:54,152 INFO L226 Difference]: Without dead ends: 2615 [2024-11-18 22:37:54,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3011 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2512, Invalid=8830, Unknown=0, NotChecked=0, Total=11342 [2024-11-18 22:37:54,157 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 3824 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3824 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:54,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3824 Valid, 1325 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-18 22:37:54,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2024-11-18 22:37:54,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 621. [2024-11-18 22:37:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 500 states have (on average 1.248) internal successors, (624), 500 states have internal predecessors, (624), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 22:37:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 784 transitions. [2024-11-18 22:37:54,307 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 784 transitions. Word has length 276 [2024-11-18 22:37:54,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:54,308 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 784 transitions. [2024-11-18 22:37:54,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 4.675) internal successors, (187), 40 states have internal predecessors, (187), 17 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 16 states have call predecessors, (109), 17 states have call successors, (109) [2024-11-18 22:37:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 784 transitions. [2024-11-18 22:37:54,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-18 22:37:54,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:54,310 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:37:54,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 22:37:54,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:37:54,511 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:54,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:54,511 INFO L85 PathProgramCache]: Analyzing trace with hash -768845091, now seen corresponding path program 1 times [2024-11-18 22:37:54,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:54,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689015677] [2024-11-18 22:37:54,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:54,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:38:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-18 22:38:00,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:38:00,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689015677] [2024-11-18 22:38:00,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689015677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:38:00,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174944576] [2024-11-18 22:38:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:38:00,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:38:00,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:38:00,147 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:38:00,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 22:38:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:38:00,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-18 22:38:00,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:38:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2083 proven. 279 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2024-11-18 22:38:04,804 INFO L311 TraceCheckSpWp]: Computing backward predicates...