./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 08:53:03,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 08:53:03,754 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 08:53:03,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 08:53:03,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 08:53:03,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 08:53:03,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 08:53:03,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 08:53:03,789 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 08:53:03,790 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 08:53:03,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 08:53:03,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 08:53:03,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 08:53:03,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 08:53:03,795 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 08:53:03,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 08:53:03,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 08:53:03,796 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 08:53:03,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 08:53:03,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 08:53:03,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 08:53:03,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 08:53:03,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 08:53:03,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 08:53:03,799 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 08:53:03,799 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 08:53:03,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 08:53:03,800 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 08:53:03,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 08:53:03,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 08:53:03,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 08:53:03,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 08:53:03,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:53:03,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 08:53:03,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 08:53:03,803 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 08:53:03,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 08:53:03,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 08:53:03,804 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 08:53:03,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 08:53:03,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 08:53:03,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 08:53:03,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 104899a801011b0e3641a72d1ef00a1787a9f1724318580031d49da34b73c0d4 [2024-11-18 08:53:04,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 08:53:04,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 08:53:04,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 08:53:04,102 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 08:53:04,103 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 08:53:04,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_find_ground-1.i [2024-11-18 08:53:05,574 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 08:53:05,738 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 08:53:05,739 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_find_ground-1.i [2024-11-18 08:53:05,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f859ca07/d470509c19a04c5fb792fab719488d97/FLAG46123f439 [2024-11-18 08:53:06,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f859ca07/d470509c19a04c5fb792fab719488d97 [2024-11-18 08:53:06,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 08:53:06,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 08:53:06,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 08:53:06,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 08:53:06,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 08:53:06,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a940e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06, skipping insertion in model container [2024-11-18 08:53:06,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 08:53:06,361 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] [2024-11-18 08:53:06,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:53:06,390 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 08:53:06,403 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] [2024-11-18 08:53:06,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:53:06,429 INFO L204 MainTranslator]: Completed translation [2024-11-18 08:53:06,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06 WrapperNode [2024-11-18 08:53:06,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 08:53:06,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 08:53:06,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 08:53:06,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 08:53:06,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,465 INFO L138 Inliner]: procedures = 16, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2024-11-18 08:53:06,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 08:53:06,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 08:53:06,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 08:53:06,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 08:53:06,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,488 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]. [2024-11-18 08:53:06,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,489 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,493 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 08:53:06,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 08:53:06,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 08:53:06,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 08:53:06,505 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (1/1) ... [2024-11-18 08:53:06,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:53:06,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:53:06,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 08:53:06,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 08:53:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 08:53:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 08:53:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 08:53:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 08:53:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 08:53:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 08:53:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 08:53:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 08:53:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 08:53:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 08:53:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 08:53:06,685 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 08:53:06,687 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 08:53:06,864 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-18 08:53:06,864 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 08:53:06,878 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 08:53:06,879 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 08:53:06,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:53:06 BoogieIcfgContainer [2024-11-18 08:53:06,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 08:53:06,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 08:53:06,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 08:53:06,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 08:53:06,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:53:06" (1/3) ... [2024-11-18 08:53:06,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cfad24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:53:06, skipping insertion in model container [2024-11-18 08:53:06,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:06" (2/3) ... [2024-11-18 08:53:06,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cfad24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:53:06, skipping insertion in model container [2024-11-18 08:53:06,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:53:06" (3/3) ... [2024-11-18 08:53:06,890 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_find_ground-1.i [2024-11-18 08:53:06,906 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 08:53:06,907 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 08:53:06,958 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 08:53:06,965 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;@3514e19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 08:53:06,965 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 08:53:06,969 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) [2024-11-18 08:53:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-18 08:53:06,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:53:06,975 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:53:06,976 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:53:06,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:53:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash 227193477, now seen corresponding path program 1 times [2024-11-18 08:53:06,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:53:06,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177661380] [2024-11-18 08:53:06,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:53:06,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:53:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:53:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:53:07,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:53:07,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177661380] [2024-11-18 08:53:07,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177661380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:53:07,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:53:07,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 08:53:07,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484238640] [2024-11-18 08:53:07,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:53:07,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:53:07,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:53:07,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:53:07,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:53:07,285 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) [2024-11-18 08:53:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:53:07,317 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2024-11-18 08:53:07,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:53:07,320 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 [2024-11-18 08:53:07,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:53:07,326 INFO L225 Difference]: With dead ends: 34 [2024-11-18 08:53:07,327 INFO L226 Difference]: Without dead ends: 16 [2024-11-18 08:53:07,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:53:07,336 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 [2024-11-18 08:53:07,337 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] [2024-11-18 08:53:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-18 08:53:07,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-18 08:53:07,364 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) [2024-11-18 08:53:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-11-18 08:53:07,365 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2024-11-18 08:53:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:53:07,366 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-11-18 08:53:07,366 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) [2024-11-18 08:53:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-11-18 08:53:07,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 08:53:07,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:53:07,367 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:53:07,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 08:53:07,367 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:53:07,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:53:07,368 INFO L85 PathProgramCache]: Analyzing trace with hash -375054400, now seen corresponding path program 1 times [2024-11-18 08:53:07,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:53:07,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710398729] [2024-11-18 08:53:07,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:53:07,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:53:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:53:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:53:07,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:53:07,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710398729] [2024-11-18 08:53:07,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710398729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:53:07,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261931568] [2024-11-18 08:53:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:53:07,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:53:07,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:53:07,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:53:07,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 08:53:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:53:07,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 08:53:07,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:53:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:53:07,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:53:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:53:07,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261931568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:53:07,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:53:07,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 08:53:07,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899727136] [2024-11-18 08:53:07,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:53:07,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 08:53:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:53:07,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 08:53:07,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:53:07,677 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) [2024-11-18 08:53:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:53:07,717 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2024-11-18 08:53:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 08:53:07,717 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 [2024-11-18 08:53:07,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:53:07,720 INFO L225 Difference]: With dead ends: 31 [2024-11-18 08:53:07,720 INFO L226 Difference]: Without dead ends: 21 [2024-11-18 08:53:07,720 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 [2024-11-18 08:53:07,722 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 [2024-11-18 08:53:07,724 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] [2024-11-18 08:53:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-18 08:53:07,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-18 08:53:07,729 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) [2024-11-18 08:53:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-18 08:53:07,730 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2024-11-18 08:53:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:53:07,730 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-18 08:53:07,730 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) [2024-11-18 08:53:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-18 08:53:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 08:53:07,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:53:07,732 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:53:07,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 08:53:07,936 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 [2024-11-18 08:53:07,938 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:53:07,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:53:07,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1899398074, now seen corresponding path program 2 times [2024-11-18 08:53:07,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:53:07,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595651507] [2024-11-18 08:53:07,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:53:07,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:53:07,971 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 08:53:07,975 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:53:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 08:53:08,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:53:08,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595651507] [2024-11-18 08:53:08,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595651507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:53:08,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:53:08,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 08:53:08,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412900108] [2024-11-18 08:53:08,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:53:08,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 08:53:08,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:53:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 08:53:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 08:53:08,086 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) [2024-11-18 08:53:08,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:53:08,123 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2024-11-18 08:53:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 08:53:08,124 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 [2024-11-18 08:53:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:53:08,125 INFO L225 Difference]: With dead ends: 32 [2024-11-18 08:53:08,126 INFO L226 Difference]: Without dead ends: 24 [2024-11-18 08:53:08,126 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 [2024-11-18 08:53:08,127 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 [2024-11-18 08:53:08,129 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] [2024-11-18 08:53:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-18 08:53:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-18 08:53:08,136 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) [2024-11-18 08:53:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-18 08:53:08,138 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2024-11-18 08:53:08,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:53:08,138 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-18 08:53:08,139 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) [2024-11-18 08:53:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-18 08:53:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 08:53:08,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:53:08,141 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:53:08,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 08:53:08,141 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:53:08,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:53:08,142 INFO L85 PathProgramCache]: Analyzing trace with hash -599526043, now seen corresponding path program 1 times [2024-11-18 08:53:08,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:53:08,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927307238] [2024-11-18 08:53:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:53:08,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:53:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:53:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 08:53:08,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:53:08,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927307238] [2024-11-18 08:53:08,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927307238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:53:08,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314656301] [2024-11-18 08:53:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:53:08,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:53:08,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:53:08,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:53:08,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 08:53:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:53:08,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 08:53:08,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:53:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 08:53:08,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:53:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 08:53:08,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314656301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:53:08,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:53:08,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 08:53:08,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312306603] [2024-11-18 08:53:08,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:53:08,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 08:53:08,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:53:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 08:53:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 08:53:08,519 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) [2024-11-18 08:53:08,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:53:08,571 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-11-18 08:53:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 08:53:08,571 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 [2024-11-18 08:53:08,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:53:08,572 INFO L225 Difference]: With dead ends: 49 [2024-11-18 08:53:08,572 INFO L226 Difference]: Without dead ends: 36 [2024-11-18 08:53:08,573 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 [2024-11-18 08:53:08,573 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 [2024-11-18 08:53:08,574 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] [2024-11-18 08:53:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-18 08:53:08,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-18 08:53:08,586 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) [2024-11-18 08:53:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-18 08:53:08,587 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 21 [2024-11-18 08:53:08,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:53:08,587 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-18 08:53:08,588 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) [2024-11-18 08:53:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-18 08:53:08,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 08:53:08,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:53:08,590 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:53:08,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 08:53:08,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 08:53:08,795 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:53:08,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:53:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1865061977, now seen corresponding path program 2 times [2024-11-18 08:53:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:53:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971069038] [2024-11-18 08:53:08,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:53:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:53:08,836 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:53:08,836 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:53:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 08:53:09,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:53:09,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971069038] [2024-11-18 08:53:09,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971069038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:53:09,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775190389] [2024-11-18 08:53:09,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:53:09,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:53:09,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:53:09,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:53:09,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 08:53:09,179 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:53:09,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:53:09,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:53:09,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:53:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 08:53:09,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:53:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 08:53:09,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775190389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:53:09,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:53:09,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 08:53:09,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636206048] [2024-11-18 08:53:09,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:53:09,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 08:53:09,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:53:09,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 08:53:09,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:53:09,582 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) [2024-11-18 08:53:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:53:09,674 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-11-18 08:53:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 08:53:09,676 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 [2024-11-18 08:53:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:53:09,677 INFO L225 Difference]: With dead ends: 73 [2024-11-18 08:53:09,677 INFO L226 Difference]: Without dead ends: 60 [2024-11-18 08:53:09,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:53:09,678 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 [2024-11-18 08:53:09,679 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] [2024-11-18 08:53:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-18 08:53:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-18 08:53:09,686 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) [2024-11-18 08:53:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2024-11-18 08:53:09,687 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 33 [2024-11-18 08:53:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:53:09,687 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2024-11-18 08:53:09,687 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) [2024-11-18 08:53:09,687 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2024-11-18 08:53:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 08:53:09,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:53:09,689 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:53:09,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 08:53:09,892 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 [2024-11-18 08:53:09,893 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:53:09,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:53:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash 18050625, now seen corresponding path program 3 times [2024-11-18 08:53:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:53:09,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106397272] [2024-11-18 08:53:09,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:53:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:53:09,932 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 08:53:09,932 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:53:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-18 08:53:10,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:53:10,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106397272] [2024-11-18 08:53:10,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106397272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:53:10,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100634824] [2024-11-18 08:53:10,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:53:10,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:53:10,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:53:10,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:53:10,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 08:53:10,193 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 08:53:10,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:53:10,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 08:53:10,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:53:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-18 08:53:10,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:53:10,579 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-18 08:53:10,580 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 [2024-11-18 08:53:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-18 08:53:10,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100634824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:53:10,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:53:10,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 08:53:10,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044991088] [2024-11-18 08:53:10,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:53:10,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 08:53:10,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:53:10,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 08:53:10,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-18 08:53:10,662 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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) [2024-11-18 08:53:10,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:53:10,759 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2024-11-18 08:53:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 08:53:10,760 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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 [2024-11-18 08:53:10,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:53:10,761 INFO L225 Difference]: With dead ends: 67 [2024-11-18 08:53:10,761 INFO L226 Difference]: Without dead ends: 65 [2024-11-18 08:53:10,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-18 08:53:10,762 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:53:10,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 69 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:53:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-18 08:53:10,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2024-11-18 08:53:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 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) [2024-11-18 08:53:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2024-11-18 08:53:10,776 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 57 [2024-11-18 08:53:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:53:10,776 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2024-11-18 08:53:10,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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) [2024-11-18 08:53:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2024-11-18 08:53:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 08:53:10,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:53:10,778 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:53:10,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 08:53:10,978 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 [2024-11-18 08:53:10,979 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:53:10,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:53:10,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1512588727, now seen corresponding path program 1 times [2024-11-18 08:53:10,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:53:10,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854311705] [2024-11-18 08:53:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:53:10,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:53:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:53:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 08:53:11,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:53:11,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854311705] [2024-11-18 08:53:11,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854311705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:53:11,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402753693] [2024-11-18 08:53:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:53:11,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:53:11,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:53:11,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:53:11,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 08:53:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:53:11,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 08:53:11,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:53:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 08:53:11,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:53:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 08:53:12,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402753693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:53:12,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:53:12,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-18 08:53:12,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081231139] [2024-11-18 08:53:12,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:53:12,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 08:53:12,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:53:12,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 08:53:12,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:53:12,688 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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) [2024-11-18 08:53:12,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:53:12,829 INFO L93 Difference]: Finished difference Result 125 states and 156 transitions. [2024-11-18 08:53:12,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 08:53:12,829 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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 61 [2024-11-18 08:53:12,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:53:12,830 INFO L225 Difference]: With dead ends: 125 [2024-11-18 08:53:12,831 INFO L226 Difference]: Without dead ends: 110 [2024-11-18 08:53:12,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:53:12,832 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:53:12,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 67 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:53:12,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-18 08:53:12,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-18 08:53:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 109 states have internal predecessors, (114), 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) [2024-11-18 08:53:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2024-11-18 08:53:12,843 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 61 [2024-11-18 08:53:12,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:53:12,843 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2024-11-18 08:53:12,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 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) [2024-11-18 08:53:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2024-11-18 08:53:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-18 08:53:12,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:53:12,846 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:53:12,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 08:53:13,046 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 [2024-11-18 08:53:13,047 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:53:13,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:53:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1066132871, now seen corresponding path program 2 times [2024-11-18 08:53:13,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:53:13,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104431415] [2024-11-18 08:53:13,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:53:13,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:53:13,112 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:53:13,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:53:14,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2121 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 08:53:14,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:53:14,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104431415] [2024-11-18 08:53:14,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104431415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:53:14,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307539483] [2024-11-18 08:53:14,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:53:14,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:53:14,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:53:14,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:53:14,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 08:53:15,132 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:53:15,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:53:15,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 08:53:15,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:53:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2121 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 08:53:15,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:53:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2121 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 08:53:18,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307539483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:53:18,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:53:18,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-18 08:53:18,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064810820] [2024-11-18 08:53:18,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:53:18,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-18 08:53:18,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:53:18,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-18 08:53:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-18 08:53:18,033 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand has 97 states, 97 states have (on average 2.0927835051546393) internal successors, (203), 97 states have internal predecessors, (203), 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) [2024-11-18 08:53:18,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:53:18,343 INFO L93 Difference]: Finished difference Result 221 states and 276 transitions. [2024-11-18 08:53:18,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-18 08:53:18,344 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0927835051546393) internal successors, (203), 97 states have internal predecessors, (203), 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 109 [2024-11-18 08:53:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:53:18,346 INFO L225 Difference]: With dead ends: 221 [2024-11-18 08:53:18,348 INFO L226 Difference]: Without dead ends: 206 [2024-11-18 08:53:18,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-18 08:53:18,351 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 08:53:18,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 80 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 08:53:18,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-18 08:53:18,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-18 08:53:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.024390243902439) internal successors, (210), 205 states have internal predecessors, (210), 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) [2024-11-18 08:53:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 210 transitions. [2024-11-18 08:53:18,375 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 210 transitions. Word has length 109 [2024-11-18 08:53:18,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:53:18,376 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 210 transitions. [2024-11-18 08:53:18,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0927835051546393) internal successors, (203), 97 states have internal predecessors, (203), 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) [2024-11-18 08:53:18,376 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 210 transitions. [2024-11-18 08:53:18,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-18 08:53:18,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:53:18,378 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:53:18,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 08:53:18,585 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 [2024-11-18 08:53:18,586 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:53:18,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:53:18,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1491895591, now seen corresponding path program 3 times [2024-11-18 08:53:18,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:53:18,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955861137] [2024-11-18 08:53:18,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:53:18,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:53:18,635 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 08:53:18,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:53:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8841 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2024-11-18 08:53:18,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:53:18,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955861137] [2024-11-18 08:53:18,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955861137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:53:18,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433047453] [2024-11-18 08:53:18,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:53:18,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:53:18,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:53:18,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:53:18,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 08:53:18,868 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 08:53:18,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:53:18,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 08:53:18,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:53:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8841 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2024-11-18 08:53:19,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:53:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8841 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2024-11-18 08:53:19,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433047453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:53:19,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:53:19,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-18 08:53:19,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637772352] [2024-11-18 08:53:19,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:53:19,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 08:53:19,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:53:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 08:53:19,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 08:53:19,368 INFO L87 Difference]: Start difference. First operand 206 states and 210 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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) [2024-11-18 08:53:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:53:19,402 INFO L93 Difference]: Finished difference Result 221 states and 227 transitions. [2024-11-18 08:53:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 08:53:19,403 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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 205 [2024-11-18 08:53:19,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:53:19,404 INFO L225 Difference]: With dead ends: 221 [2024-11-18 08:53:19,404 INFO L226 Difference]: Without dead ends: 209 [2024-11-18 08:53:19,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 404 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 08:53:19,405 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:53:19,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 64 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:53:19,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-18 08:53:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-11-18 08:53:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.0288461538461537) internal successors, (214), 208 states have internal predecessors, (214), 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) [2024-11-18 08:53:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 214 transitions. [2024-11-18 08:53:19,418 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 214 transitions. Word has length 205 [2024-11-18 08:53:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:53:19,419 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 214 transitions. [2024-11-18 08:53:19,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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) [2024-11-18 08:53:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 214 transitions. [2024-11-18 08:53:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 08:53:19,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:53:19,422 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:53:19,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 08:53:19,622 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 [2024-11-18 08:53:19,623 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:53:19,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:53:19,623 INFO L85 PathProgramCache]: Analyzing trace with hash -202976496, now seen corresponding path program 4 times [2024-11-18 08:53:19,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:53:19,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068673794] [2024-11-18 08:53:19,623 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:53:19,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:53:19,732 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:53:19,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:53:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8847 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 08:53:25,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:53:25,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068673794] [2024-11-18 08:53:25,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068673794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:53:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134580418] [2024-11-18 08:53:25,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:53:25,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:53:25,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:53:25,480 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) [2024-11-18 08:53:25,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 08:53:25,737 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:53:25,738 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:53:25,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-18 08:53:25,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:53:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8847 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 08:53:26,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:53:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8847 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 08:53:34,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134580418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:53:34,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:53:34,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 192 [2024-11-18 08:53:34,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551394054] [2024-11-18 08:53:34,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:53:34,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-11-18 08:53:34,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:53:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-11-18 08:53:34,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2024-11-18 08:53:34,785 INFO L87 Difference]: Start difference. First operand 209 states and 214 transitions. Second operand has 192 states, 192 states have (on average 2.0416666666666665) internal successors, (392), 192 states have internal predecessors, (392), 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) [2024-11-18 08:53:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:53:35,425 INFO L93 Difference]: Finished difference Result 419 states and 524 transitions. [2024-11-18 08:53:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-18 08:53:35,426 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 2.0416666666666665) internal successors, (392), 192 states have internal predecessors, (392), 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 208 [2024-11-18 08:53:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:53:35,428 INFO L225 Difference]: With dead ends: 419 [2024-11-18 08:53:35,428 INFO L226 Difference]: Without dead ends: 401 [2024-11-18 08:53:35,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2024-11-18 08:53:35,432 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 08:53:35,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 08:53:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-18 08:53:35,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2024-11-18 08:53:35,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.015) internal successors, (406), 400 states have internal predecessors, (406), 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) [2024-11-18 08:53:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 406 transitions. [2024-11-18 08:53:35,464 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 406 transitions. Word has length 208 [2024-11-18 08:53:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:53:35,466 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 406 transitions. [2024-11-18 08:53:35,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 2.0416666666666665) internal successors, (392), 192 states have internal predecessors, (392), 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) [2024-11-18 08:53:35,467 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 406 transitions. [2024-11-18 08:53:35,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-18 08:53:35,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:53:35,477 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:53:35,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 08:53:35,680 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 [2024-11-18 08:53:35,681 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:53:35,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:53:35,681 INFO L85 PathProgramCache]: Analyzing trace with hash 15780816, now seen corresponding path program 5 times [2024-11-18 08:53:35,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:53:35,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507789141] [2024-11-18 08:53:35,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:53:35,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:53:43,251 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 191 check-sat command(s) [2024-11-18 08:53:43,251 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:54:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 36111 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 08:54:02,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:54:02,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507789141] [2024-11-18 08:54:02,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507789141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:54:02,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90015962] [2024-11-18 08:54:02,217 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:54:02,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:54:02,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:54:02,219 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) [2024-11-18 08:54:02,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process