./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_find_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_find_ground-1.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 104899a801011b0e3641a72d1ef00a1787a9f1724318580031d49da34b73c0d4 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 09:42:12,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 09:42:12,404 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 09:42:12,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 09:42:12,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 09:42:12,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 09:42:12,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 09:42:12,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 09:42:12,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 09:42:12,445 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 09:42:12,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 09:42:12,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 09:42:12,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 09:42:12,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 09:42:12,447 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 09:42:12,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 09:42:12,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 09:42:12,448 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 09:42:12,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 09:42:12,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 09:42:12,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 09:42:12,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 09:42:12,450 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 09:42:12,450 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 09:42:12,450 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 09:42:12,450 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 09:42:12,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 09:42:12,451 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 09:42:12,451 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 09:42:12,451 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 09:42:12,451 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 09:42:12,452 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 09:42:12,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:42:12,452 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 09:42:12,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 09:42:12,453 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 09:42:12,453 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 09:42:12,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 09:42:12,453 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 09:42:12,453 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 09:42:12,454 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 09:42:12,454 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 09:42:12,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 104899a801011b0e3641a72d1ef00a1787a9f1724318580031d49da34b73c0d4 [2024-11-08 09:42:12,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 09:42:12,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 09:42:12,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 09:42:12,697 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 09:42:12,697 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 09:42:12,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_find_ground-1.i [2024-11-08 09:42:13,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 09:42:14,077 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 09:42:14,078 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_find_ground-1.i [2024-11-08 09:42:14,083 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1c5b7b8/6544db8bfca4486cb88e848759bd990b/FLAG262c52b2d [2024-11-08 09:42:14,497 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1c5b7b8/6544db8bfca4486cb88e848759bd990b [2024-11-08 09:42:14,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 09:42:14,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 09:42:14,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 09:42:14,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 09:42:14,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 09:42:14,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b727fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14, skipping insertion in model container [2024-11-08 09:42:14,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,524 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 09:42:14,666 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_find_ground-1.i[855,868] [2024-11-08 09:42:14,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:42:14,686 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 09:42:14,700 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_find_ground-1.i[855,868] [2024-11-08 09:42:14,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:42:14,719 INFO L204 MainTranslator]: Completed translation [2024-11-08 09:42:14,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14 WrapperNode [2024-11-08 09:42:14,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 09:42:14,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 09:42:14,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 09:42:14,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 09:42:14,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,743 INFO L138 Inliner]: procedures = 16, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2024-11-08 09:42:14,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 09:42:14,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 09:42:14,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 09:42:14,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 09:42:14,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,752 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,761 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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]. [2024-11-08 09:42:14,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 09:42:14,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 09:42:14,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 09:42:14,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 09:42:14,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (1/1) ... [2024-11-08 09:42:14,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:42:14,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:42:14,797 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) [2024-11-08 09:42:14,805 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 [2024-11-08 09:42:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 09:42:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 09:42:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 09:42:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 09:42:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 09:42:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 09:42:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 09:42:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 09:42:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 09:42:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 09:42:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 09:42:14,909 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 09:42:14,911 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 09:42:15,036 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-08 09:42:15,036 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 09:42:15,048 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 09:42:15,048 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 09:42:15,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:42:15 BoogieIcfgContainer [2024-11-08 09:42:15,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 09:42:15,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 09:42:15,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 09:42:15,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 09:42:15,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 09:42:14" (1/3) ... [2024-11-08 09:42:15,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36504f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:42:15, skipping insertion in model container [2024-11-08 09:42:15,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:42:14" (2/3) ... [2024-11-08 09:42:15,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36504f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:42:15, skipping insertion in model container [2024-11-08 09:42:15,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:42:15" (3/3) ... [2024-11-08 09:42:15,058 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_find_ground-1.i [2024-11-08 09:42:15,071 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 09:42:15,072 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 09:42:15,129 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 09:42:15,137 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;@3915594, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 09:42:15,137 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 09:42:15,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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) [2024-11-08 09:42:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 09:42:15,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:42:15,146 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:42:15,147 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:42:15,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:42:15,151 INFO L85 PathProgramCache]: Analyzing trace with hash 227193477, now seen corresponding path program 1 times [2024-11-08 09:42:15,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:42:15,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385344024] [2024-11-08 09:42:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:15,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:42:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:42:15,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:42:15,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385344024] [2024-11-08 09:42:15,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385344024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:42:15,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:42:15,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:42:15,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830943304] [2024-11-08 09:42:15,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:42:15,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:42:15,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:42:15,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:42:15,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:42:15,382 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-08 09:42:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:42:15,406 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2024-11-08 09:42:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:42:15,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-08 09:42:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:42:15,414 INFO L225 Difference]: With dead ends: 34 [2024-11-08 09:42:15,414 INFO L226 Difference]: Without dead ends: 16 [2024-11-08 09:42:15,416 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 [2024-11-08 09:42:15,419 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:42:15,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:42:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-08 09:42:15,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-08 09:42:15,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2024-11-08 09:42:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-11-08 09:42:15,450 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2024-11-08 09:42:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:42:15,450 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-11-08 09:42:15,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-08 09:42:15,451 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-11-08 09:42:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 09:42:15,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:42:15,451 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:42:15,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 09:42:15,452 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:42:15,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:42:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash -375054400, now seen corresponding path program 1 times [2024-11-08 09:42:15,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:42:15,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862810790] [2024-11-08 09:42:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:15,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:42:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:42:15,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:42:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862810790] [2024-11-08 09:42:15,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862810790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:42:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867832788] [2024-11-08 09:42:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:15,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:15,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:42:15,534 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) [2024-11-08 09:42:15,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 09:42:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:15,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 09:42:15,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:42:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:42:15,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:42:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:42:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867832788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:42:15,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:42:15,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 09:42:15,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367376574] [2024-11-08 09:42:15,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:42:15,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 09:42:15,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:42:15,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 09:42:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:42:15,660 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) [2024-11-08 09:42:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:42:15,687 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2024-11-08 09:42:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 09:42:15,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) Word has length 12 [2024-11-08 09:42:15,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:42:15,699 INFO L225 Difference]: With dead ends: 31 [2024-11-08 09:42:15,700 INFO L226 Difference]: Without dead ends: 21 [2024-11-08 09:42:15,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:42:15,704 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:42:15,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:42:15,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-08 09:42:15,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-08 09:42:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2024-11-08 09:42:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-08 09:42:15,711 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2024-11-08 09:42:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:42:15,711 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-08 09:42:15,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) [2024-11-08 09:42:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-08 09:42:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 09:42:15,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:42:15,712 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:42:15,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 09:42:15,913 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 [2024-11-08 09:42:15,914 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:42:15,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:42:15,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1899398074, now seen corresponding path program 2 times [2024-11-08 09:42:15,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:42:15,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367104863] [2024-11-08 09:42:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:15,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:42:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 09:42:16,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:42:16,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367104863] [2024-11-08 09:42:16,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367104863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:42:16,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:42:16,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:42:16,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105411822] [2024-11-08 09:42:16,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:42:16,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:42:16,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:42:16,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:42:16,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:42:16,053 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-08 09:42:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:42:16,074 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2024-11-08 09:42:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:42:16,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 18 [2024-11-08 09:42:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:42:16,075 INFO L225 Difference]: With dead ends: 32 [2024-11-08 09:42:16,075 INFO L226 Difference]: Without dead ends: 24 [2024-11-08 09:42:16,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:42:16,076 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:42:16,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:42:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-08 09:42:16,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-08 09:42:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2024-11-08 09:42:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-08 09:42:16,080 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2024-11-08 09:42:16,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:42:16,080 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-08 09:42:16,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-08 09:42:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-08 09:42:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 09:42:16,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:42:16,081 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:42:16,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 09:42:16,082 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:42:16,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:42:16,082 INFO L85 PathProgramCache]: Analyzing trace with hash -599526043, now seen corresponding path program 1 times [2024-11-08 09:42:16,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:42:16,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433966484] [2024-11-08 09:42:16,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:16,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:42:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 09:42:16,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:42:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433966484] [2024-11-08 09:42:16,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433966484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:42:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342087147] [2024-11-08 09:42:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:16,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:16,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:42:16,246 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) [2024-11-08 09:42:16,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 09:42:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:16,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 09:42:16,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:42:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 09:42:16,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:42:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 09:42:16,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342087147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:42:16,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:42:16,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-08 09:42:16,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893685880] [2024-11-08 09:42:16,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:42:16,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 09:42:16,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:42:16,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 09:42:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 09:42:16,414 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2024-11-08 09:42:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:42:16,448 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-11-08 09:42:16,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 09:42:16,450 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 21 [2024-11-08 09:42:16,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:42:16,450 INFO L225 Difference]: With dead ends: 49 [2024-11-08 09:42:16,450 INFO L226 Difference]: Without dead ends: 36 [2024-11-08 09:42:16,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 09:42:16,451 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:42:16,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 41 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:42:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-08 09:42:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-08 09:42:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 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) [2024-11-08 09:42:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-08 09:42:16,460 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 21 [2024-11-08 09:42:16,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:42:16,461 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-08 09:42:16,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2024-11-08 09:42:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-08 09:42:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 09:42:16,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:42:16,463 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:42:16,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 09:42:16,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-08 09:42:16,664 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:42:16,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:42:16,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1865061977, now seen corresponding path program 2 times [2024-11-08 09:42:16,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:42:16,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929702737] [2024-11-08 09:42:16,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:16,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:42:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 09:42:16,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:42:16,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929702737] [2024-11-08 09:42:16,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929702737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:42:16,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264215394] [2024-11-08 09:42:16,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:42:16,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:16,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:42:16,890 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) [2024-11-08 09:42:16,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 09:42:16,958 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:42:16,958 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:42:16,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 09:42:16,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:42:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 09:42:17,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:42:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 09:42:17,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264215394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:42:17,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:42:17,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-08 09:42:17,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129352492] [2024-11-08 09:42:17,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:42:17,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 09:42:17,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:42:17,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 09:42:17,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 09:42:17,257 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 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) [2024-11-08 09:42:17,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:42:17,340 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-11-08 09:42:17,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 09:42:17,341 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 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 33 [2024-11-08 09:42:17,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:42:17,342 INFO L225 Difference]: With dead ends: 73 [2024-11-08 09:42:17,344 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 09:42:17,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 09:42:17,345 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:42:17,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 93 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:42:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 09:42:17,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-08 09:42:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 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) [2024-11-08 09:42:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2024-11-08 09:42:17,354 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 33 [2024-11-08 09:42:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:42:17,355 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2024-11-08 09:42:17,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 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) [2024-11-08 09:42:17,355 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2024-11-08 09:42:17,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 09:42:17,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:42:17,357 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:42:17,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 09:42:17,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:17,559 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:42:17,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:42:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash 18050625, now seen corresponding path program 3 times [2024-11-08 09:42:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:42:17,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434162960] [2024-11-08 09:42:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:42:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:18,091 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 09:42:18,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:42:18,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434162960] [2024-11-08 09:42:18,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434162960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:42:18,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557179990] [2024-11-08 09:42:18,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:42:18,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:18,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:42:18,095 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) [2024-11-08 09:42:18,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 09:42:18,164 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 09:42:18,164 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:42:18,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 09:42:18,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:42:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-08 09:42:18,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:42:18,538 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 09:42:18,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 09:42:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-08 09:42:18,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557179990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:42:18,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:42:18,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 34 [2024-11-08 09:42:18,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573957413] [2024-11-08 09:42:18,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:42:18,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 09:42:18,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:42:18,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 09:42:18,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=795, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 09:42:18,616 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 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) [2024-11-08 09:42:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:42:19,109 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2024-11-08 09:42:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 09:42:19,109 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 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 57 [2024-11-08 09:42:19,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:42:19,110 INFO L225 Difference]: With dead ends: 81 [2024-11-08 09:42:19,110 INFO L226 Difference]: Without dead ends: 68 [2024-11-08 09:42:19,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=968, Invalid=2572, Unknown=0, NotChecked=0, Total=3540 [2024-11-08 09:42:19,112 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:42:19,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 105 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:42:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-08 09:42:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2024-11-08 09:42:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 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) [2024-11-08 09:42:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2024-11-08 09:42:19,118 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 57 [2024-11-08 09:42:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:42:19,118 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2024-11-08 09:42:19,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 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) [2024-11-08 09:42:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2024-11-08 09:42:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 09:42:19,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:42:19,119 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:42:19,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 09:42:19,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:19,320 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:42:19,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:42:19,321 INFO L85 PathProgramCache]: Analyzing trace with hash -242880523, now seen corresponding path program 1 times [2024-11-08 09:42:19,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:42:19,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660089896] [2024-11-08 09:42:19,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:19,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:42:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 09:42:19,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:42:19,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660089896] [2024-11-08 09:42:19,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660089896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:42:19,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117049813] [2024-11-08 09:42:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:19,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:19,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:42:19,764 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) [2024-11-08 09:42:19,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 09:42:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:19,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 09:42:19,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:42:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 09:42:19,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:42:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 09:42:20,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117049813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:42:20,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:42:20,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-11-08 09:42:20,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284438163] [2024-11-08 09:42:20,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:42:20,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 09:42:20,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:42:20,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 09:42:20,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 09:42:20,484 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 51 states have internal predecessors, (111), 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) [2024-11-08 09:42:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:42:20,593 INFO L93 Difference]: Finished difference Result 129 states and 161 transitions. [2024-11-08 09:42:20,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-08 09:42:20,594 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 51 states have internal predecessors, (111), 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 63 [2024-11-08 09:42:20,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:42:20,594 INFO L225 Difference]: With dead ends: 129 [2024-11-08 09:42:20,594 INFO L226 Difference]: Without dead ends: 114 [2024-11-08 09:42:20,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 09:42:20,596 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:42:20,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:42:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-08 09:42:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-08 09:42:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 113 states have internal predecessors, (118), 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) [2024-11-08 09:42:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2024-11-08 09:42:20,610 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 63 [2024-11-08 09:42:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:42:20,613 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2024-11-08 09:42:20,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 51 states have internal predecessors, (111), 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) [2024-11-08 09:42:20,613 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2024-11-08 09:42:20,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-08 09:42:20,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:42:20,615 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:42:20,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 09:42:20,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:20,819 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:42:20,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:42:20,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1880177283, now seen corresponding path program 2 times [2024-11-08 09:42:20,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:42:20,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121829979] [2024-11-08 09:42:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:20,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:42:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 09:42:22,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:42:22,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121829979] [2024-11-08 09:42:22,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121829979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:42:22,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638496321] [2024-11-08 09:42:22,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:42:22,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:22,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:42:22,279 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) [2024-11-08 09:42:22,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 09:42:22,396 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:42:22,396 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:42:22,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-08 09:42:22,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:42:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 09:42:22,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:42:24,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 09:42:24,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638496321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:42:24,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:42:24,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2024-11-08 09:42:24,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611251620] [2024-11-08 09:42:24,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:42:24,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-08 09:42:24,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:42:24,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-08 09:42:24,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-08 09:42:24,574 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand has 101 states, 101 states have (on average 2.089108910891089) internal successors, (211), 101 states have internal predecessors, (211), 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) [2024-11-08 09:42:24,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:42:24,799 INFO L93 Difference]: Finished difference Result 229 states and 286 transitions. [2024-11-08 09:42:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-08 09:42:24,800 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.089108910891089) internal successors, (211), 101 states have internal predecessors, (211), 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 113 [2024-11-08 09:42:24,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:42:24,801 INFO L225 Difference]: With dead ends: 229 [2024-11-08 09:42:24,801 INFO L226 Difference]: Without dead ends: 214 [2024-11-08 09:42:24,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-08 09:42:24,803 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:42:24,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:42:24,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-08 09:42:24,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-08 09:42:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.0234741784037558) internal successors, (218), 213 states have internal predecessors, (218), 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) [2024-11-08 09:42:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 218 transitions. [2024-11-08 09:42:24,815 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 218 transitions. Word has length 113 [2024-11-08 09:42:24,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:42:24,816 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 218 transitions. [2024-11-08 09:42:24,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.089108910891089) internal successors, (211), 101 states have internal predecessors, (211), 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) [2024-11-08 09:42:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 218 transitions. [2024-11-08 09:42:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-08 09:42:24,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:42:24,823 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:42:24,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 09:42:25,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:25,024 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:42:25,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:42:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1757589791, now seen corresponding path program 3 times [2024-11-08 09:42:25,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:42:25,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627798555] [2024-11-08 09:42:25,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:25,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:42:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9609 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 09:42:29,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:42:29,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627798555] [2024-11-08 09:42:29,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627798555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:42:29,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114270740] [2024-11-08 09:42:29,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:42:29,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:29,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:42:29,452 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) [2024-11-08 09:42:29,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 09:42:29,576 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 09:42:29,576 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:42:29,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 09:42:29,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:42:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9609 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9604 trivial. 0 not checked. [2024-11-08 09:42:29,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:42:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9609 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9604 trivial. 0 not checked. [2024-11-08 09:42:30,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114270740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:42:30,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:42:30,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 6, 6] total 107 [2024-11-08 09:42:30,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240397570] [2024-11-08 09:42:30,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:42:30,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-11-08 09:42:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:42:30,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-11-08 09:42:30,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5070, Invalid=6272, Unknown=0, NotChecked=0, Total=11342 [2024-11-08 09:42:30,179 INFO L87 Difference]: Start difference. First operand 214 states and 218 transitions. Second operand has 107 states, 107 states have (on average 2.1682242990654204) internal successors, (232), 107 states have internal predecessors, (232), 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) [2024-11-08 09:42:33,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:42:33,358 INFO L93 Difference]: Finished difference Result 241 states and 251 transitions. [2024-11-08 09:42:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-08 09:42:33,358 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.1682242990654204) internal successors, (232), 107 states have internal predecessors, (232), 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 213 [2024-11-08 09:42:33,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:42:33,359 INFO L225 Difference]: With dead ends: 241 [2024-11-08 09:42:33,359 INFO L226 Difference]: Without dead ends: 220 [2024-11-08 09:42:33,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 418 SyntacticMatches, 2 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5746 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=15267, Invalid=26963, Unknown=0, NotChecked=0, Total=42230 [2024-11-08 09:42:33,364 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:42:33,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 72 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:42:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-08 09:42:33,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2024-11-08 09:42:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.0275229357798166) internal successors, (224), 218 states have internal predecessors, (224), 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) [2024-11-08 09:42:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 224 transitions. [2024-11-08 09:42:33,374 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 224 transitions. Word has length 213 [2024-11-08 09:42:33,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:42:33,375 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 224 transitions. [2024-11-08 09:42:33,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.1682242990654204) internal successors, (232), 107 states have internal predecessors, (232), 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) [2024-11-08 09:42:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 224 transitions. [2024-11-08 09:42:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-08 09:42:33,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:42:33,377 INFO L215 NwaCegarLoop]: trace histogram [99, 99, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:42:33,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 09:42:33,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:33,577 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:42:33,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:42:33,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1659061018, now seen corresponding path program 4 times [2024-11-08 09:42:33,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:42:33,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654391813] [2024-11-08 09:42:33,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:33,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:42:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:42:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9812 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:42:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:42:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654391813] [2024-11-08 09:42:37,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654391813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:42:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324425446] [2024-11-08 09:42:37,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:42:37,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:42:37,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:42:37,805 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) [2024-11-08 09:42:37,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 09:42:38,005 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:42:38,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:42:38,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-08 09:42:38,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:42:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9812 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:42:38,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:42:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9812 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:42:45,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324425446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:42:45,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:42:45,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102, 102] total 203 [2024-11-08 09:42:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827627367] [2024-11-08 09:42:45,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:42:45,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-08 09:42:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:42:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-08 09:42:45,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2024-11-08 09:42:45,943 INFO L87 Difference]: Start difference. First operand 219 states and 224 transitions. Second operand has 203 states, 203 states have (on average 2.044334975369458) internal successors, (415), 203 states have internal predecessors, (415), 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) [2024-11-08 09:42:46,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:42:46,583 INFO L93 Difference]: Finished difference Result 439 states and 549 transitions. [2024-11-08 09:42:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2024-11-08 09:42:46,584 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 2.044334975369458) internal successors, (415), 203 states have internal predecessors, (415), 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 218 [2024-11-08 09:42:46,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:42:46,585 INFO L225 Difference]: With dead ends: 439 [2024-11-08 09:42:46,585 INFO L226 Difference]: Without dead ends: 421 [2024-11-08 09:42:46,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2024-11-08 09:42:46,588 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 09:42:46,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 09:42:46,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-08 09:42:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2024-11-08 09:42:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.0142857142857142) internal successors, (426), 420 states have internal predecessors, (426), 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) [2024-11-08 09:42:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 426 transitions. [2024-11-08 09:42:46,603 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 426 transitions. Word has length 218 [2024-11-08 09:42:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:42:46,603 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 426 transitions. [2024-11-08 09:42:46,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 2.044334975369458) internal successors, (415), 203 states have internal predecessors, (415), 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) [2024-11-08 09:42:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 426 transitions. [2024-11-08 09:42:46,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-08 09:42:46,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:42:46,607 INFO L215 NwaCegarLoop]: trace histogram [200, 200, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:42:46,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 09:42:46,807 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,SelfDestructingSolverStorable9 [2024-11-08 09:42:46,808 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:42:46,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:42:46,808 INFO L85 PathProgramCache]: Analyzing trace with hash -182925468, now seen corresponding path program 5 times [2024-11-08 09:42:46,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:42:46,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819000211] [2024-11-08 09:42:46,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:42:46,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:42:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:43:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 40011 backedges. 0 proven. 40000 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:43:03,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:43:03,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819000211] [2024-11-08 09:43:03,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819000211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:43:03,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893240010] [2024-11-08 09:43:03,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:43:03,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:43:03,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:43:03,921 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) [2024-11-08 09:43:03,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process