./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/transpose-u.c --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-multidimensional/transpose-u.c -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 44b06771d393671cf9550617b8bf478abc837489f84f20705c70efc1808f7508 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:16:28,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:16:29,052 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:16:29,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:16:29,061 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:16:29,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:16:29,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:16:29,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:16:29,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:16:29,091 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:16:29,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:16:29,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:16:29,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:16:29,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:16:29,093 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:16:29,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:16:29,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:16:29,095 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:16:29,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:16:29,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:16:29,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:16:29,099 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:16:29,099 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:16:29,099 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:16:29,100 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:16:29,100 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:16:29,100 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:16:29,100 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:16:29,100 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:16:29,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:16:29,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:16:29,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:16:29,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:16:29,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:16:29,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:16:29,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:16:29,102 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:16:29,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:16:29,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:16:29,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:16:29,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:16:29,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:16:29,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44b06771d393671cf9550617b8bf478abc837489f84f20705c70efc1808f7508 [2024-11-18 09:16:29,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:16:29,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:16:29,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:16:29,459 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:16:29,460 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:16:29,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/transpose-u.c [2024-11-18 09:16:30,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:16:31,156 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:16:31,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/transpose-u.c [2024-11-18 09:16:31,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510af3b61/3534b9fbe19b4ecdb2e00320182b2f71/FLAGf255e6c9b [2024-11-18 09:16:31,182 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510af3b61/3534b9fbe19b4ecdb2e00320182b2f71 [2024-11-18 09:16:31,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:16:31,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:16:31,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:16:31,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:16:31,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:16:31,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73eb4aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31, skipping insertion in model container [2024-11-18 09:16:31,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,232 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:16:31,449 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-multidimensional/transpose-u.c[315,328] [2024-11-18 09:16:31,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:16:31,484 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:16:31,497 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-multidimensional/transpose-u.c[315,328] [2024-11-18 09:16:31,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:16:31,530 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:16:31,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31 WrapperNode [2024-11-18 09:16:31,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:16:31,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:16:31,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:16:31,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:16:31,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,573 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2024-11-18 09:16:31,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:16:31,575 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:16:31,575 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:16:31,575 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:16:31,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,606 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-18 09:16:31,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:16:31,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:16:31,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:16:31,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:16:31,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (1/1) ... [2024-11-18 09:16:31,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:16:31,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:16:31,664 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 09:16:31,676 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 09:16:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:16:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:16:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:16:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:16:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:16:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:16:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:16:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:16:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:16:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:16:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:16:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:16:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:16:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:16:31,818 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:16:31,820 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:16:32,038 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-18 09:16:32,039 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:16:32,056 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:16:32,056 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-18 09:16:32,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:16:32 BoogieIcfgContainer [2024-11-18 09:16:32,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:16:32,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:16:32,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:16:32,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:16:32,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:16:31" (1/3) ... [2024-11-18 09:16:32,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac59e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:16:32, skipping insertion in model container [2024-11-18 09:16:32,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:16:31" (2/3) ... [2024-11-18 09:16:32,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac59e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:16:32, skipping insertion in model container [2024-11-18 09:16:32,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:16:32" (3/3) ... [2024-11-18 09:16:32,066 INFO L112 eAbstractionObserver]: Analyzing ICFG transpose-u.c [2024-11-18 09:16:32,084 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:16:32,085 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:16:32,149 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:16:32,157 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;@16bea4ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:16:32,158 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:16:32,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 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 09:16:32,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 09:16:32,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:32,168 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:32,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:32,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:32,175 INFO L85 PathProgramCache]: Analyzing trace with hash 74794164, now seen corresponding path program 1 times [2024-11-18 09:16:32,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:32,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120956312] [2024-11-18 09:16:32,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:16:32,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:16:32,484 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 09:16:32,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:32,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120956312] [2024-11-18 09:16:32,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120956312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:16:32,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:16:32,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:16:32,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725212931] [2024-11-18 09:16:32,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:16:32,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:16:32,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:32,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:16:32,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:16:32,519 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 09:16:32,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:32,569 INFO L93 Difference]: Finished difference Result 48 states and 76 transitions. [2024-11-18 09:16:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:16:32,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-11-18 09:16:32,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:32,579 INFO L225 Difference]: With dead ends: 48 [2024-11-18 09:16:32,579 INFO L226 Difference]: Without dead ends: 23 [2024-11-18 09:16:32,581 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 09:16:32,584 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:32,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:16:32,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-18 09:16:32,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-11-18 09:16:32,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 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 09:16:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-18 09:16:32,613 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 10 [2024-11-18 09:16:32,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:32,613 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-18 09:16:32,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 09:16:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-18 09:16:32,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 09:16:32,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:32,615 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:32,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:16:32,615 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:32,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:32,616 INFO L85 PathProgramCache]: Analyzing trace with hash 876166624, now seen corresponding path program 1 times [2024-11-18 09:16:32,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:32,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156106567] [2024-11-18 09:16:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:16:32,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:16:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:16:32,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:32,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156106567] [2024-11-18 09:16:32,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156106567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:16:32,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:16:32,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:16:32,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603905872] [2024-11-18 09:16:32,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:16:32,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:16:32,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:32,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:16:32,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:16:32,730 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 09:16:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:32,779 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-11-18 09:16:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:16:32,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-18 09:16:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:32,780 INFO L225 Difference]: With dead ends: 46 [2024-11-18 09:16:32,781 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 09:16:32,781 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 09:16:32,782 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:32,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 21 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:16:32,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 09:16:32,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2024-11-18 09:16:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 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 09:16:32,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-11-18 09:16:32,790 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 13 [2024-11-18 09:16:32,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:32,790 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-11-18 09:16:32,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 09:16:32,791 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-11-18 09:16:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 09:16:32,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:32,794 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:32,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:16:32,795 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:32,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:32,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1798277150, now seen corresponding path program 1 times [2024-11-18 09:16:32,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:32,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070764446] [2024-11-18 09:16:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:16:32,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:16:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:16:32,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:32,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070764446] [2024-11-18 09:16:32,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070764446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:16:32,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:16:32,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:16:32,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506141357] [2024-11-18 09:16:32,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:16:32,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:16:32,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:32,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:16:32,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:16:32,935 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 09:16:33,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:33,018 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2024-11-18 09:16:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:16:33,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2024-11-18 09:16:33,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:33,020 INFO L225 Difference]: With dead ends: 50 [2024-11-18 09:16:33,022 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 09:16:33,022 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 09:16:33,024 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:33,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 17 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:16:33,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 09:16:33,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 24. [2024-11-18 09:16:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:16:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-18 09:16:33,034 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2024-11-18 09:16:33,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:33,035 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-18 09:16:33,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 09:16:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-18 09:16:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-18 09:16:33,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:33,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:33,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:16:33,037 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:33,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash -622296559, now seen corresponding path program 1 times [2024-11-18 09:16:33,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:33,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453226413] [2024-11-18 09:16:33,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:16:33,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:16:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:16:33,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:33,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453226413] [2024-11-18 09:16:33,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453226413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:16:33,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419299493] [2024-11-18 09:16:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:16:33,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:33,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:16:33,185 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 09:16:33,187 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 09:16:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:16:33,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:16:33,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:16:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:16:33,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:16:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:16:33,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419299493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:16:33,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:16:33,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-18 09:16:33,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605229242] [2024-11-18 09:16:33,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:16:33,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 09:16:33,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:33,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 09:16:33,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:16:33,424 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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 09:16:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:33,651 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2024-11-18 09:16:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:16:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) Word has length 19 [2024-11-18 09:16:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:33,654 INFO L225 Difference]: With dead ends: 72 [2024-11-18 09:16:33,654 INFO L226 Difference]: Without dead ends: 51 [2024-11-18 09:16:33,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:16:33,658 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 95 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:33,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 50 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:16:33,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-18 09:16:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2024-11-18 09:16:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 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 09:16:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-18 09:16:33,669 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 19 [2024-11-18 09:16:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:33,670 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-18 09:16:33,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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 09:16:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-18 09:16:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 09:16:33,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:33,671 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:33,689 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 09:16:33,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:33,872 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:33,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:33,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2013197213, now seen corresponding path program 2 times [2024-11-18 09:16:33,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:33,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119877615] [2024-11-18 09:16:33,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:16:33,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:33,908 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:16:33,912 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:16:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 09:16:33,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:33,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119877615] [2024-11-18 09:16:33,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119877615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:16:33,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630397022] [2024-11-18 09:16:33,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:16:33,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:33,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:16:34,001 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 09:16:34,006 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 09:16:34,100 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:16:34,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:16:34,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 09:16:34,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:16:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 09:16:34,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:16:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 09:16:34,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630397022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:16:34,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:16:34,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 16 [2024-11-18 09:16:34,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782481365] [2024-11-18 09:16:34,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:16:34,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 09:16:34,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:16:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 09:16:34,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:16:34,342 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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 09:16:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:16:35,074 INFO L93 Difference]: Finished difference Result 343 states and 418 transitions. [2024-11-18 09:16:35,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 09:16:35,075 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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 28 [2024-11-18 09:16:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:16:35,077 INFO L225 Difference]: With dead ends: 343 [2024-11-18 09:16:35,080 INFO L226 Difference]: Without dead ends: 301 [2024-11-18 09:16:35,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=629, Invalid=1093, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 09:16:35,082 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 644 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:16:35,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 65 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:16:35,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-18 09:16:35,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 123. [2024-11-18 09:16:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.139344262295082) internal successors, (139), 122 states have internal predecessors, (139), 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 09:16:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions. [2024-11-18 09:16:35,118 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 28 [2024-11-18 09:16:35,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:16:35,119 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 139 transitions. [2024-11-18 09:16:35,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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 09:16:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions. [2024-11-18 09:16:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-18 09:16:35,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:16:35,121 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:16:35,141 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 09:16:35,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:35,322 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:16:35,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:16:35,323 INFO L85 PathProgramCache]: Analyzing trace with hash -662393900, now seen corresponding path program 3 times [2024-11-18 09:16:35,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:16:35,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272503817] [2024-11-18 09:16:35,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:16:35,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:16:35,506 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-18 09:16:35,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:16:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2024-11-18 09:16:35,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:16:35,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272503817] [2024-11-18 09:16:35,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272503817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:16:35,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345050545] [2024-11-18 09:16:35,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:16:35,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:16:35,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:16:35,866 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 09:16:35,867 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 09:16:45,613 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:16:45,613 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:16:45,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-18 09:16:45,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:16:45,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-18 09:16:46,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-18 09:16:46,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:16:46,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-18 09:16:46,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:16:46,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-18 09:16:46,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:16:46,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-18 09:16:46,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:16:46,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-18 09:16:46,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:16:46,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-18 09:16:46,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:16:46,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-18 09:16:46,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:16:46,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-18 09:16:46,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:16:46,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-18 09:16:46,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:16:46,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-18 09:16:46,721 INFO L349 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2024-11-18 09:16:46,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2024-11-18 09:16:46,837 INFO L349 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2024-11-18 09:16:46,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-18 09:16:46,960 INFO L349 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2024-11-18 09:16:46,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-18 09:16:47,069 INFO L349 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2024-11-18 09:16:47,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-18 09:16:47,214 INFO L349 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2024-11-18 09:16:47,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-18 09:16:47,326 INFO L349 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2024-11-18 09:16:47,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-18 09:16:47,435 INFO L349 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2024-11-18 09:16:47,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-18 09:16:47,539 INFO L349 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2024-11-18 09:16:47,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-18 09:16:47,647 INFO L349 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2024-11-18 09:16:47,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-18 09:16:47,756 INFO L349 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2024-11-18 09:16:47,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-18 09:16:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 36 proven. 198 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2024-11-18 09:16:48,104 INFO L311 TraceCheckSpWp]: Computing backward predicates...