./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_maxInArray_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_maxInArray_ground.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 418a605fc1323c67278586b967efb51b918569726e40c2a0630b64c1083a6ff9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:36:57,532 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:36:57,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:36:57,611 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:36:57,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:36:57,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:36:57,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:36:57,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:36:57,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:36:57,646 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:36:57,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:36:57,647 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:36:57,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:36:57,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:36:57,649 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:36:57,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:36:57,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:36:57,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:36:57,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:36:57,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:36:57,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:36:57,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:36:57,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:36:57,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:36:57,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:36:57,655 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:36:57,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:36:57,655 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:36:57,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:36:57,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:36:57,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:36:57,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:36:57,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:36:57,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:36:57,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:36:57,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:36:57,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:36:57,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:36:57,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:36:57,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:36:57,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:36:57,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:36:57,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 418a605fc1323c67278586b967efb51b918569726e40c2a0630b64c1083a6ff9 [2024-11-21 20:36:57,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:36:57,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:36:57,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:36:57,927 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:36:57,928 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:36:57,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_maxInArray_ground.i [2024-11-21 20:36:59,403 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:36:59,601 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:36:59,602 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_maxInArray_ground.i [2024-11-21 20:36:59,610 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14e6ad6ca/6d8bd6fc58dd42dca2a1b6e002bfbef1/FLAG8ef5fbaa4 [2024-11-21 20:36:59,621 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14e6ad6ca/6d8bd6fc58dd42dca2a1b6e002bfbef1 [2024-11-21 20:36:59,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:36:59,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:36:59,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:36:59,629 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:36:59,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:36:59,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28fb078b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59, skipping insertion in model container [2024-11-21 20:36:59,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,660 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:36:59,820 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/array-examples/standard_maxInArray_ground.i[819,832] [2024-11-21 20:36:59,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:36:59,840 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:36:59,852 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/array-examples/standard_maxInArray_ground.i[819,832] [2024-11-21 20:36:59,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:36:59,874 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:36:59,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59 WrapperNode [2024-11-21 20:36:59,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:36:59,876 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:36:59,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:36:59,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:36:59,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,903 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2024-11-21 20:36:59,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:36:59,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:36:59,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:36:59,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:36:59,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,919 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,933 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-21 20:36:59,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:36:59,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:36:59,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:36:59,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:36:59,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (1/1) ... [2024-11-21 20:36:59,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:36:59,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:36:59,987 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) [2024-11-21 20:36:59,994 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 [2024-11-21 20:37:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:37:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:37:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:37:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:37:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:37:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:37:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:37:00,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:37:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:37:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:37:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:37:00,116 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:37:00,118 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:37:00,289 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-21 20:37:00,289 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:37:00,333 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:37:00,333 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-21 20:37:00,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:37:00 BoogieIcfgContainer [2024-11-21 20:37:00,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:37:00,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:37:00,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:37:00,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:37:00,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:36:59" (1/3) ... [2024-11-21 20:37:00,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb66a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:37:00, skipping insertion in model container [2024-11-21 20:37:00,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:36:59" (2/3) ... [2024-11-21 20:37:00,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb66a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:37:00, skipping insertion in model container [2024-11-21 20:37:00,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:37:00" (3/3) ... [2024-11-21 20:37:00,346 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_maxInArray_ground.i [2024-11-21 20:37:00,365 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:37:00,366 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:37:00,429 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:37:00,438 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;@45e99171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:37:00,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:37:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:00,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-21 20:37:00,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:00,448 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:00,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:00,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:00,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2005182879, now seen corresponding path program 1 times [2024-11-21 20:37:00,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:00,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763286316] [2024-11-21 20:37:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:00,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:37:00,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:00,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763286316] [2024-11-21 20:37:00,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763286316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:37:00,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:37:00,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:37:00,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822630374] [2024-11-21 20:37:00,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:37:00,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:37:00,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:00,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:37:00,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:37:00,719 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:00,751 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2024-11-21 20:37:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:37:00,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-21 20:37:00,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:00,760 INFO L225 Difference]: With dead ends: 36 [2024-11-21 20:37:00,760 INFO L226 Difference]: Without dead ends: 17 [2024-11-21 20:37:00,763 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 [2024-11-21 20:37:00,769 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:00,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-21 20:37:00,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-11-21 20:37:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-21 20:37:00,800 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2024-11-21 20:37:00,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:00,801 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-21 20:37:00,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-21 20:37:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-21 20:37:00,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:00,802 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:00,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:37:00,803 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:00,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:00,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1565753620, now seen corresponding path program 1 times [2024-11-21 20:37:00,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:00,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580943558] [2024-11-21 20:37:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:00,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:37:00,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:00,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580943558] [2024-11-21 20:37:00,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580943558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:00,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211108951] [2024-11-21 20:37:00,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:00,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:00,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:00,919 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) [2024-11-21 20:37:00,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 20:37:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:00,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 20:37:00,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:00,996 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 20:37:00,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211108951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:37:00,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 20:37:00,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 20:37:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017606281] [2024-11-21 20:37:00,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:37:00,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:37:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:37:00,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:37:00,999 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:01,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:01,020 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2024-11-21 20:37:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:37:01,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-21 20:37:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:01,022 INFO L225 Difference]: With dead ends: 26 [2024-11-21 20:37:01,022 INFO L226 Difference]: Without dead ends: 19 [2024-11-21 20:37:01,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:37:01,023 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:01,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:01,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-21 20:37:01,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2024-11-21 20:37:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-21 20:37:01,028 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2024-11-21 20:37:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:01,028 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-21 20:37:01,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-21 20:37:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-21 20:37:01,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:01,029 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:01,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 20:37:01,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:01,234 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:01,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1959207727, now seen corresponding path program 1 times [2024-11-21 20:37:01,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:01,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326792175] [2024-11-21 20:37:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:01,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:01,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:01,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326792175] [2024-11-21 20:37:01,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326792175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:01,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207463655] [2024-11-21 20:37:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:01,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:01,359 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) [2024-11-21 20:37:01,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 20:37:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:01,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:37:01,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:01,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:01,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207463655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:01,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:01,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 20:37:01,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021805395] [2024-11-21 20:37:01,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:01,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 20:37:01,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:01,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 20:37:01,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:37:01,470 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:01,499 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-11-21 20:37:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:37:01,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-21 20:37:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:01,501 INFO L225 Difference]: With dead ends: 35 [2024-11-21 20:37:01,501 INFO L226 Difference]: Without dead ends: 23 [2024-11-21 20:37:01,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:37:01,502 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:01,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:01,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-21 20:37:01,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-21 20:37:01,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-21 20:37:01,507 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2024-11-21 20:37:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:01,507 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-21 20:37:01,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-21 20:37:01,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-21 20:37:01,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:01,508 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:01,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 20:37:01,709 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,SelfDestructingSolverStorable2 [2024-11-21 20:37:01,710 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:01,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:01,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2025336791, now seen corresponding path program 2 times [2024-11-21 20:37:01,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:01,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156959132] [2024-11-21 20:37:01,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:37:01,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:01,740 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:37:01,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-21 20:37:01,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:01,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156959132] [2024-11-21 20:37:01,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156959132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:01,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092574288] [2024-11-21 20:37:01,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:37:01,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:01,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:01,838 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) [2024-11-21 20:37:01,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 20:37:01,901 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:37:01,901 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:01,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:37:01,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:01,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:02,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092574288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:02,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:02,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-21 20:37:02,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895488529] [2024-11-21 20:37:02,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:02,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 20:37:02,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:02,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 20:37:02,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:37:02,077 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:02,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:02,138 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2024-11-21 20:37:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-21 20:37:02,139 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-21 20:37:02,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:02,140 INFO L225 Difference]: With dead ends: 52 [2024-11-21 20:37:02,140 INFO L226 Difference]: Without dead ends: 40 [2024-11-21 20:37:02,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:37:02,141 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:02,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 44 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-21 20:37:02,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-11-21 20:37:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-11-21 20:37:02,148 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 20 [2024-11-21 20:37:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:02,149 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-11-21 20:37:02,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:02,149 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-11-21 20:37:02,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-21 20:37:02,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:02,150 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:02,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:02,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:02,352 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:02,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:02,352 INFO L85 PathProgramCache]: Analyzing trace with hash -930592990, now seen corresponding path program 3 times [2024-11-21 20:37:02,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:02,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084051516] [2024-11-21 20:37:02,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:37:02,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:02,395 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:37:02,396 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-21 20:37:02,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:02,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084051516] [2024-11-21 20:37:02,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084051516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:02,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136909805] [2024-11-21 20:37:02,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:37:02,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:02,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:02,487 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) [2024-11-21 20:37:02,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 20:37:02,553 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:37:02,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:02,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 20:37:02,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-21 20:37:02,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-21 20:37:02,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136909805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:02,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:02,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-21 20:37:02,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679680912] [2024-11-21 20:37:02,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:02,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-21 20:37:02,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-21 20:37:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-21 20:37:02,634 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:02,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:02,687 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2024-11-21 20:37:02,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-21 20:37:02,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-21 20:37:02,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:02,689 INFO L225 Difference]: With dead ends: 57 [2024-11-21 20:37:02,689 INFO L226 Difference]: Without dead ends: 50 [2024-11-21 20:37:02,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-21 20:37:02,692 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:02,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 65 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:02,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-21 20:37:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-21 20:37:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2024-11-21 20:37:02,702 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 35 [2024-11-21 20:37:02,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:02,703 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2024-11-21 20:37:02,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:02,703 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2024-11-21 20:37:02,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-21 20:37:02,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:02,705 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:02,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:02,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:02,909 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:02,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:02,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1935274014, now seen corresponding path program 4 times [2024-11-21 20:37:02,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:02,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503563855] [2024-11-21 20:37:02,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:37:02,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:02,956 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:37:02,956 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-21 20:37:03,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:03,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503563855] [2024-11-21 20:37:03,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503563855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:03,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787016551] [2024-11-21 20:37:03,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:37:03,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:03,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:03,183 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) [2024-11-21 20:37:03,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 20:37:03,267 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:37:03,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:03,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-21 20:37:03,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-21 20:37:03,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-21 20:37:03,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787016551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:03,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:03,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2024-11-21 20:37:03,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611251433] [2024-11-21 20:37:03,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:03,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-21 20:37:03,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:03,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-21 20:37:03,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2024-11-21 20:37:03,749 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 31 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:03,900 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2024-11-21 20:37:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-21 20:37:03,901 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 31 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-21 20:37:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:03,902 INFO L225 Difference]: With dead ends: 106 [2024-11-21 20:37:03,902 INFO L226 Difference]: Without dead ends: 79 [2024-11-21 20:37:03,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2024-11-21 20:37:03,903 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:03,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 77 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:37:03,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-21 20:37:03,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-11-21 20:37:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.131578947368421) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2024-11-21 20:37:03,915 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 47 [2024-11-21 20:37:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:03,915 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2024-11-21 20:37:03,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 31 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:03,916 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2024-11-21 20:37:03,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-21 20:37:03,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:03,917 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:03,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-21 20:37:04,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:04,122 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:04,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:04,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1480185765, now seen corresponding path program 5 times [2024-11-21 20:37:04,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:04,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907137310] [2024-11-21 20:37:04,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:37:04,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:04,252 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-11-21 20:37:04,252 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-21 20:37:04,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907137310] [2024-11-21 20:37:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907137310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448619071] [2024-11-21 20:37:04,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:37:04,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:04,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:04,456 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) [2024-11-21 20:37:04,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 20:37:04,982 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-11-21 20:37:04,982 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:04,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-21 20:37:04,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-21 20:37:05,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-21 20:37:05,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448619071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:05,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:05,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-21 20:37:05,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209037851] [2024-11-21 20:37:05,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:05,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-21 20:37:05,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:05,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-21 20:37:05,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2024-11-21 20:37:05,214 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:05,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:05,303 INFO L93 Difference]: Finished difference Result 111 states and 138 transitions. [2024-11-21 20:37:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-21 20:37:05,303 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-21 20:37:05,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:05,306 INFO L225 Difference]: With dead ends: 111 [2024-11-21 20:37:05,308 INFO L226 Difference]: Without dead ends: 104 [2024-11-21 20:37:05,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2024-11-21 20:37:05,309 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:05,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 74 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:37:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-21 20:37:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-21 20:37:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 103 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:05,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 122 transitions. [2024-11-21 20:37:05,328 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 122 transitions. Word has length 74 [2024-11-21 20:37:05,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:05,328 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 122 transitions. [2024-11-21 20:37:05,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:05,330 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 122 transitions. [2024-11-21 20:37:05,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-21 20:37:05,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:05,332 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:05,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-21 20:37:05,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:05,533 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:05,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:05,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1564013994, now seen corresponding path program 6 times [2024-11-21 20:37:05,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:05,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455670139] [2024-11-21 20:37:05,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:37:05,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:05,786 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-21 20:37:05,787 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:06,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:06,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455670139] [2024-11-21 20:37:06,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455670139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:06,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317204039] [2024-11-21 20:37:06,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:37:06,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:06,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:06,451 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) [2024-11-21 20:37:06,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 20:37:07,349 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-21 20:37:07,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:07,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-21 20:37:07,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:07,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 530 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-21 20:37:08,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317204039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:08,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:08,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 27] total 51 [2024-11-21 20:37:08,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672881889] [2024-11-21 20:37:08,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:08,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-21 20:37:08,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-21 20:37:08,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1181, Invalid=1369, Unknown=0, NotChecked=0, Total=2550 [2024-11-21 20:37:08,307 INFO L87 Difference]: Start difference. First operand 104 states and 122 transitions. Second operand has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 51 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:08,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:08,468 INFO L93 Difference]: Finished difference Result 209 states and 268 transitions. [2024-11-21 20:37:08,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-21 20:37:08,469 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 51 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-21 20:37:08,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:08,471 INFO L225 Difference]: With dead ends: 209 [2024-11-21 20:37:08,472 INFO L226 Difference]: Without dead ends: 152 [2024-11-21 20:37:08,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1181, Invalid=1369, Unknown=0, NotChecked=0, Total=2550 [2024-11-21 20:37:08,474 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:08,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 102 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:37:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-21 20:37:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-11-21 20:37:08,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.1258278145695364) internal successors, (170), 151 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:08,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 170 transitions. [2024-11-21 20:37:08,495 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 170 transitions. Word has length 101 [2024-11-21 20:37:08,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:08,496 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 170 transitions. [2024-11-21 20:37:08,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 51 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:08,496 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 170 transitions. [2024-11-21 20:37:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-21 20:37:08,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:08,499 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:08,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-21 20:37:08,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:08,700 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:08,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:08,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1602976390, now seen corresponding path program 7 times [2024-11-21 20:37:08,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:08,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762359424] [2024-11-21 20:37:08,701 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:37:08,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:10,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:10,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762359424] [2024-11-21 20:37:10,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762359424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:10,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000070021] [2024-11-21 20:37:10,760 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:37:10,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:10,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:10,763 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:37:10,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 20:37:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:10,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-21 20:37:10,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:11,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:13,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000070021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:13,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:13,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-21 20:37:13,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605286611] [2024-11-21 20:37:13,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:13,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-21 20:37:13,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:13,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-21 20:37:13,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-21 20:37:13,534 INFO L87 Difference]: Start difference. First operand 152 states and 170 transitions. Second operand has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 97 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:13,783 INFO L93 Difference]: Finished difference Result 305 states and 388 transitions. [2024-11-21 20:37:13,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-21 20:37:13,784 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 97 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-21 20:37:13,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:13,786 INFO L225 Difference]: With dead ends: 305 [2024-11-21 20:37:13,786 INFO L226 Difference]: Without dead ends: 248 [2024-11-21 20:37:13,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-21 20:37:13,789 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:13,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 68 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:37:13,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-21 20:37:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-11-21 20:37:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.0769230769230769) internal successors, (266), 247 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:13,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 266 transitions. [2024-11-21 20:37:13,803 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 266 transitions. Word has length 149 [2024-11-21 20:37:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:13,803 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 266 transitions. [2024-11-21 20:37:13,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 97 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 266 transitions. [2024-11-21 20:37:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-21 20:37:13,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:13,807 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:13,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-21 20:37:14,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-21 20:37:14,008 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:14,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:14,009 INFO L85 PathProgramCache]: Analyzing trace with hash 950338842, now seen corresponding path program 8 times [2024-11-21 20:37:14,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:14,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194117315] [2024-11-21 20:37:14,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:37:14,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:14,135 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:37:14,136 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9212 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:19,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:19,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194117315] [2024-11-21 20:37:19,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194117315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:19,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080223282] [2024-11-21 20:37:19,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:37:19,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:19,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:19,821 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:37:19,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 20:37:20,115 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:37:20,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:20,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-21 20:37:20,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9212 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:20,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9212 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-21 20:37:29,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080223282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:29,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:29,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-21 20:37:29,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428006919] [2024-11-21 20:37:29,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:29,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-21 20:37:29,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-21 20:37:29,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-21 20:37:29,245 INFO L87 Difference]: Start difference. First operand 248 states and 266 transitions. Second operand has 193 states, 193 states have (on average 2.0362694300518136) internal successors, (393), 193 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:29,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:29,928 INFO L93 Difference]: Finished difference Result 497 states and 628 transitions. [2024-11-21 20:37:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-21 20:37:29,929 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.0362694300518136) internal successors, (393), 193 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2024-11-21 20:37:29,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:29,931 INFO L225 Difference]: With dead ends: 497 [2024-11-21 20:37:29,931 INFO L226 Difference]: Without dead ends: 440 [2024-11-21 20:37:29,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-21 20:37:29,934 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:29,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 20:37:29,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-21 20:37:29,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2024-11-21 20:37:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.0432801822323463) internal successors, (458), 439 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:29,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 458 transitions. [2024-11-21 20:37:29,955 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 458 transitions. Word has length 245 [2024-11-21 20:37:29,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:29,955 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 458 transitions. [2024-11-21 20:37:29,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.0362694300518136) internal successors, (393), 193 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:29,956 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 458 transitions. [2024-11-21 20:37:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-21 20:37:29,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:29,971 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:29,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-21 20:37:30,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-21 20:37:30,171 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:30,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:30,172 INFO L85 PathProgramCache]: Analyzing trace with hash -756317094, now seen corresponding path program 9 times [2024-11-21 20:37:30,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:30,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220472266] [2024-11-21 20:37:30,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:37:30,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:30,326 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-21 20:37:30,327 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:30,610 INFO L134 CoverageAnalysis]: Checked inductivity of 36476 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-21 20:37:30,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:30,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220472266] [2024-11-21 20:37:30,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220472266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:30,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378307673] [2024-11-21 20:37:30,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:37:30,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:30,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:30,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:37:30,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 20:37:31,101 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-21 20:37:31,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:31,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-21 20:37:31,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 36476 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-21 20:37:31,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 36476 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 36100 trivial. 0 not checked. [2024-11-21 20:37:31,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378307673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:31,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:31,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-11-21 20:37:31,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122309040] [2024-11-21 20:37:31,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:31,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-21 20:37:31,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:31,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-21 20:37:31,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2024-11-21 20:37:31,572 INFO L87 Difference]: Start difference. First operand 440 states and 458 transitions. Second operand has 37 states, 37 states have (on average 3.054054054054054) internal successors, (113), 37 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:31,718 INFO L93 Difference]: Finished difference Result 501 states and 555 transitions. [2024-11-21 20:37:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-21 20:37:31,718 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.054054054054054) internal successors, (113), 37 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 437 [2024-11-21 20:37:31,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:31,725 INFO L225 Difference]: With dead ends: 501 [2024-11-21 20:37:31,725 INFO L226 Difference]: Without dead ends: 494 [2024-11-21 20:37:31,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2024-11-21 20:37:31,727 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 106 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:31,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 103 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:37:31,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2024-11-21 20:37:31,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2024-11-21 20:37:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 1.075050709939148) internal successors, (530), 493 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 530 transitions. [2024-11-21 20:37:31,769 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 530 transitions. Word has length 437 [2024-11-21 20:37:31,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:31,771 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 530 transitions. [2024-11-21 20:37:31,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.054054054054054) internal successors, (113), 37 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,772 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 530 transitions. [2024-11-21 20:37:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-11-21 20:37:31,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:31,781 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:31,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:31,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-21 20:37:31,982 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:31,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:31,983 INFO L85 PathProgramCache]: Analyzing trace with hash -425503302, now seen corresponding path program 10 times [2024-11-21 20:37:31,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:31,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002979678] [2024-11-21 20:37:31,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:37:31,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:32,278 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:37:32,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 37817 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 1717 trivial. 0 not checked. [2024-11-21 20:37:51,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:51,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002979678] [2024-11-21 20:37:51,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002979678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:51,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324300265] [2024-11-21 20:37:51,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:37:51,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:51,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:51,978 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 20:37:51,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-21 20:37:52,477 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:37:52,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:52,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 2031 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-21 20:37:52,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 37817 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 1717 trivial. 0 not checked. [2024-11-21 20:37:52,876 INFO L311 TraceCheckSpWp]: Computing backward predicates...