./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test1-1.i --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test1-1.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 f947716b74eb4e4932bd5d636c4998c6e0af4555d045ab3a1d1cd79c9fa77ead --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 23:16:19,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 23:16:20,013 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 23:16:20,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 23:16:20,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 23:16:20,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 23:16:20,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 23:16:20,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 23:16:20,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 23:16:20,058 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 23:16:20,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 23:16:20,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 23:16:20,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 23:16:20,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 23:16:20,060 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 23:16:20,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 23:16:20,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 23:16:20,061 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 23:16:20,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 23:16:20,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 23:16:20,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 23:16:20,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 23:16:20,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 23:16:20,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 23:16:20,062 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 23:16:20,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 23:16:20,063 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 23:16:20,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 23:16:20,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 23:16:20,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 23:16:20,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 23:16:20,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:16:20,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 23:16:20,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 23:16:20,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 23:16:20,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 23:16:20,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 23:16:20,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 23:16:20,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 23:16:20,066 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 23:16:20,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 23:16:20,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 23:16:20,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f947716b74eb4e4932bd5d636c4998c6e0af4555d045ab3a1d1cd79c9fa77ead Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 23:16:20,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 23:16:20,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 23:16:20,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 23:16:20,278 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 23:16:20,278 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 23:16:20,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test1-1.i [2023-11-22 23:16:21,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 23:16:21,532 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 23:16:21,534 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test1-1.i [2023-11-22 23:16:21,547 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83bcc0ce9/f204f1b916c34f7bb6921cec6b487ef3/FLAG67cc1da3b [2023-11-22 23:16:21,557 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83bcc0ce9/f204f1b916c34f7bb6921cec6b487ef3 [2023-11-22 23:16:21,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 23:16:21,559 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 23:16:21,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 23:16:21,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 23:16:21,564 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 23:16:21,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:16:21" (1/1) ... [2023-11-22 23:16:21,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502dd23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:21, skipping insertion in model container [2023-11-22 23:16:21,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:16:21" (1/1) ... [2023-11-22 23:16:21,603 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:16:21,762 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-22 23:16:21,841 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test1-1.i[33510,33523] [2023-11-22 23:16:21,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:16:21,929 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 23:16:21,952 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-22 23:16:21,959 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test1-1.i[33510,33523] [2023-11-22 23:16:22,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:16:22,031 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 23:16:22,037 INFO L206 MainTranslator]: Completed translation [2023-11-22 23:16:22,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22 WrapperNode [2023-11-22 23:16:22,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 23:16:22,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 23:16:22,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 23:16:22,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 23:16:22,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (1/1) ... [2023-11-22 23:16:22,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (1/1) ... [2023-11-22 23:16:22,101 INFO L138 Inliner]: procedures = 178, calls = 177, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 751 [2023-11-22 23:16:22,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 23:16:22,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 23:16:22,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 23:16:22,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 23:16:22,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (1/1) ... [2023-11-22 23:16:22,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (1/1) ... [2023-11-22 23:16:22,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (1/1) ... [2023-11-22 23:16:22,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (1/1) ... [2023-11-22 23:16:22,135 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (1/1) ... [2023-11-22 23:16:22,140 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (1/1) ... [2023-11-22 23:16:22,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (1/1) ... [2023-11-22 23:16:22,157 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (1/1) ... [2023-11-22 23:16:22,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 23:16:22,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 23:16:22,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 23:16:22,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 23:16:22,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (1/1) ... [2023-11-22 23:16:22,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:16:22,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:16:22,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 23:16:22,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 23:16:22,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 23:16:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 23:16:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-22 23:16:22,222 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-22 23:16:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 23:16:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 23:16:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 23:16:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-22 23:16:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-22 23:16:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 23:16:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 23:16:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 23:16:22,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 23:16:22,348 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 23:16:22,350 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 23:16:22,972 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 23:16:22,991 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 23:16:22,991 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-22 23:16:22,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:16:22 BoogieIcfgContainer [2023-11-22 23:16:22,991 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 23:16:22,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 23:16:22,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 23:16:22,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 23:16:22,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:16:21" (1/3) ... [2023-11-22 23:16:22,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d05a07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:16:22, skipping insertion in model container [2023-11-22 23:16:22,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:22" (2/3) ... [2023-11-22 23:16:22,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d05a07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:16:22, skipping insertion in model container [2023-11-22 23:16:22,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:16:22" (3/3) ... [2023-11-22 23:16:22,997 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test1-1.i [2023-11-22 23:16:23,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 23:16:23,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 23:16:23,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 23:16:23,078 INFO L357 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, mHoare=true, 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;@778febb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 23:16:23,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 23:16:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 178 states have (on average 1.696629213483146) internal successors, (302), 179 states have internal predecessors, (302), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-22 23:16:23,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-22 23:16:23,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:16:23,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:16:23,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:16:23,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:16:23,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1601693395, now seen corresponding path program 1 times [2023-11-22 23:16:23,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:16:23,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218894128] [2023-11-22 23:16:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:23,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:16:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:16:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:16:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218894128] [2023-11-22 23:16:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218894128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:16:23,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:16:23,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 23:16:23,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616767316] [2023-11-22 23:16:23,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:16:23,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:16:23,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:16:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:16:23,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:16:23,228 INFO L87 Difference]: Start difference. First operand has 184 states, 178 states have (on average 1.696629213483146) internal successors, (302), 179 states have internal predecessors, (302), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-22 23:16:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:16:23,312 INFO L93 Difference]: Finished difference Result 539 states and 909 transitions. [2023-11-22 23:16:23,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:16:23,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-11-22 23:16:23,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:16:23,327 INFO L225 Difference]: With dead ends: 539 [2023-11-22 23:16:23,327 INFO L226 Difference]: Without dead ends: 354 [2023-11-22 23:16:23,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:16:23,334 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 252 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 529 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 [2023-11-22 23:16:23,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 529 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:16:23,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-22 23:16:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 183. [2023-11-22 23:16:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.4887640449438202) internal successors, (265), 178 states have internal predecessors, (265), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-22 23:16:23,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 271 transitions. [2023-11-22 23:16:23,380 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 271 transitions. Word has length 7 [2023-11-22 23:16:23,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:16:23,380 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 271 transitions. [2023-11-22 23:16:23,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-22 23:16:23,381 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 271 transitions. [2023-11-22 23:16:23,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-22 23:16:23,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:16:23,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:16:23,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 23:16:23,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:16:23,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:16:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash 455833270, now seen corresponding path program 1 times [2023-11-22 23:16:23,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:16:23,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228987887] [2023-11-22 23:16:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:23,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:16:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:16:23,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:16:23,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228987887] [2023-11-22 23:16:23,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228987887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:16:23,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:16:23,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:16:23,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595944979] [2023-11-22 23:16:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:16:23,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:16:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:16:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:16:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:16:23,760 INFO L87 Difference]: Start difference. First operand 183 states and 271 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2023-11-22 23:16:23,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:16:23,857 INFO L93 Difference]: Finished difference Result 368 states and 544 transitions. [2023-11-22 23:16:23,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:16:23,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2023-11-22 23:16:23,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:16:23,859 INFO L225 Difference]: With dead ends: 368 [2023-11-22 23:16:23,859 INFO L226 Difference]: Without dead ends: 187 [2023-11-22 23:16:23,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:16:23,868 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 165 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:16:23,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 568 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:16:23,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-22 23:16:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2023-11-22 23:16:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.449438202247191) internal successors, (258), 178 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-22 23:16:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 264 transitions. [2023-11-22 23:16:23,884 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 264 transitions. Word has length 82 [2023-11-22 23:16:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:16:23,885 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 264 transitions. [2023-11-22 23:16:23,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2023-11-22 23:16:23,885 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 264 transitions. [2023-11-22 23:16:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-22 23:16:23,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:16:23,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:16:23,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 23:16:23,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:16:23,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:16:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1237779394, now seen corresponding path program 1 times [2023-11-22 23:16:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:16:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847840418] [2023-11-22 23:16:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:16:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 23:16:24,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:16:24,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847840418] [2023-11-22 23:16:24,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847840418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:16:24,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:16:24,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 23:16:24,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275903847] [2023-11-22 23:16:24,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:16:24,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:16:24,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:16:24,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:16:24,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:16:24,048 INFO L87 Difference]: Start difference. First operand 183 states and 264 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2023-11-22 23:16:24,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:16:24,091 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2023-11-22 23:16:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:16:24,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 82 [2023-11-22 23:16:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:16:24,094 INFO L225 Difference]: With dead ends: 475 [2023-11-22 23:16:24,094 INFO L226 Difference]: Without dead ends: 294 [2023-11-22 23:16:24,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:16:24,095 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 123 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:16:24,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 503 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:16:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-22 23:16:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-11-22 23:16:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 289 states have (on average 1.480968858131488) internal successors, (428), 289 states have internal predecessors, (428), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-22 23:16:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 434 transitions. [2023-11-22 23:16:24,105 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 434 transitions. Word has length 82 [2023-11-22 23:16:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:16:24,106 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 434 transitions. [2023-11-22 23:16:24,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2023-11-22 23:16:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 434 transitions. [2023-11-22 23:16:24,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-22 23:16:24,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:16:24,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:16:24,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 23:16:24,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:16:24,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:16:24,109 INFO L85 PathProgramCache]: Analyzing trace with hash -598971389, now seen corresponding path program 1 times [2023-11-22 23:16:24,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:16:24,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888088995] [2023-11-22 23:16:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:24,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:16:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:24,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 23:16:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:24,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 23:16:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:16:24,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:16:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888088995] [2023-11-22 23:16:24,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888088995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:16:24,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608658748] [2023-11-22 23:16:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:24,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:16:24,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:16:24,272 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) [2023-11-22 23:16:24,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 23:16:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:24,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:16:24,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:16:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:16:24,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:16:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:16:24,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608658748] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:16:24,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:16:24,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-22 23:16:24,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683561156] [2023-11-22 23:16:24,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:16:24,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 23:16:24,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:16:24,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 23:16:24,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:16:24,814 INFO L87 Difference]: Start difference. First operand 294 states and 434 transitions. Second operand has 8 states, 8 states have (on average 31.625) internal successors, (253), 7 states have internal predecessors, (253), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-22 23:16:25,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:16:25,056 INFO L93 Difference]: Finished difference Result 705 states and 1040 transitions. [2023-11-22 23:16:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:16:25,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.625) internal successors, (253), 7 states have internal predecessors, (253), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 95 [2023-11-22 23:16:25,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:16:25,060 INFO L225 Difference]: With dead ends: 705 [2023-11-22 23:16:25,060 INFO L226 Difference]: Without dead ends: 699 [2023-11-22 23:16:25,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:16:25,061 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1528 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:16:25,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 1374 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:16:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-22 23:16:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2023-11-22 23:16:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 683 states have (on average 1.4538799414348462) internal successors, (993), 683 states have internal predecessors, (993), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-22 23:16:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1017 transitions. [2023-11-22 23:16:25,082 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1017 transitions. Word has length 95 [2023-11-22 23:16:25,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:16:25,083 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1017 transitions. [2023-11-22 23:16:25,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.625) internal successors, (253), 7 states have internal predecessors, (253), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-22 23:16:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1017 transitions. [2023-11-22 23:16:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-22 23:16:25,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:16:25,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:16:25,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 23:16:25,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:16:25,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:16:25,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:16:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1096719374, now seen corresponding path program 1 times [2023-11-22 23:16:25,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:16:25,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704377284] [2023-11-22 23:16:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:25,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:16:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 23:16:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:25,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 23:16:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 4 proven. 162 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-11-22 23:16:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:16:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704377284] [2023-11-22 23:16:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704377284] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:16:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355270488] [2023-11-22 23:16:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:25,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:16:25,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:16:25,783 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) [2023-11-22 23:16:25,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 23:16:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:16:26,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 23:16:26,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:16:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:16:26,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:16:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 23:16:26,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355270488] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:16:26,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:16:26,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2023-11-22 23:16:26,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666638549] [2023-11-22 23:16:26,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:16:26,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 23:16:26,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:16:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 23:16:26,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2023-11-22 23:16:26,851 INFO L87 Difference]: Start difference. First operand 697 states and 1017 transitions. Second operand has 15 states, 15 states have (on average 50.86666666666667) internal successors, (763), 14 states have internal predecessors, (763), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-22 23:16:27,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:16:27,654 INFO L93 Difference]: Finished difference Result 2063 states and 3045 transitions. [2023-11-22 23:16:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 23:16:27,655 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 50.86666666666667) internal successors, (763), 14 states have internal predecessors, (763), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 320 [2023-11-22 23:16:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:16:27,661 INFO L225 Difference]: With dead ends: 2063 [2023-11-22 23:16:27,661 INFO L226 Difference]: Without dead ends: 1651 [2023-11-22 23:16:27,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2023-11-22 23:16:27,663 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 6241 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6241 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 23:16:27,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6241 Valid, 3069 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 23:16:27,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2023-11-22 23:16:27,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2023-11-22 23:16:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1635 states have (on average 1.4666666666666666) internal successors, (2398), 1635 states have internal predecessors, (2398), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-22 23:16:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2422 transitions. [2023-11-22 23:16:27,721 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2422 transitions. Word has length 320 [2023-11-22 23:16:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:16:27,721 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2422 transitions. [2023-11-22 23:16:27,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.86666666666667) internal successors, (763), 14 states have internal predecessors, (763), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-22 23:16:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2422 transitions. [2023-11-22 23:16:27,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-11-22 23:16:27,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:16:27,732 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:16:27,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 23:16:27,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:16:27,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:16:27,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:16:27,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1247642206, now seen corresponding path program 1 times [2023-11-22 23:16:27,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:16:27,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767236267] [2023-11-22 23:16:27,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:16:27,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Killed by 15