./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array7_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array7_pattern.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:15:32,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:15:32,093 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:15:32,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:15:32,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:15:32,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:15:32,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:15:32,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:15:32,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:15:32,134 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:15:32,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:15:32,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:15:32,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:15:32,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:15:32,139 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:15:32,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:15:32,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:15:32,140 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:15:32,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:15:32,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:15:32,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:15:32,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:15:32,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:15:32,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:15:32,142 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:15:32,142 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:15:32,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:15:32,143 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:15:32,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:15:32,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:15:32,144 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:15:32,144 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:15:32,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:15:32,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:15:32,145 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:15:32,146 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:15:32,146 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:15:32,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:15:32,146 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:15:32,146 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:15:32,147 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:15:32,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:15:32,147 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa [2024-10-10 22:15:32,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:15:32,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:15:32,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:15:32,432 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:15:32,433 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:15:32,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array7_pattern.c [2024-10-10 22:15:33,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:15:34,067 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:15:34,068 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array7_pattern.c [2024-10-10 22:15:34,075 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/64c9a4345/a89c69b4a2cd4a7da831ff5d8c7ee495/FLAG720d435aa [2024-10-10 22:15:34,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/64c9a4345/a89c69b4a2cd4a7da831ff5d8c7ee495 [2024-10-10 22:15:34,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:15:34,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:15:34,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:15:34,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:15:34,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:15:34,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3886842b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34, skipping insertion in model container [2024-10-10 22:15:34,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:15:34,295 WARN L248 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-patterns/array7_pattern.c[1375,1388] [2024-10-10 22:15:34,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:15:34,333 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:15:34,345 WARN L248 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-patterns/array7_pattern.c[1375,1388] [2024-10-10 22:15:34,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:15:34,374 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:15:34,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34 WrapperNode [2024-10-10 22:15:34,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:15:34,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:15:34,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:15:34,376 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:15:34,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,410 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2024-10-10 22:15:34,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:15:34,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:15:34,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:15:34,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:15:34,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,435 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-10-10 22:15:34,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,440 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,444 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:15:34,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:15:34,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:15:34,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:15:34,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (1/1) ... [2024-10-10 22:15:34,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:15:34,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:15:34,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:15:34,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:15:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:15:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-10 22:15:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-10 22:15:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:15:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:15:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-10 22:15:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:15:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:15:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:15:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-10 22:15:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:15:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:15:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:15:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:15:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-10 22:15:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:15:34,633 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:15:34,638 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:15:34,857 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-10-10 22:15:34,857 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:15:34,892 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:15:34,892 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-10 22:15:34,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:15:34 BoogieIcfgContainer [2024-10-10 22:15:34,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:15:34,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:15:34,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:15:34,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:15:34,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:15:34" (1/3) ... [2024-10-10 22:15:34,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e59ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:15:34, skipping insertion in model container [2024-10-10 22:15:34,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:34" (2/3) ... [2024-10-10 22:15:34,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e59ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:15:34, skipping insertion in model container [2024-10-10 22:15:34,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:15:34" (3/3) ... [2024-10-10 22:15:34,906 INFO L112 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2024-10-10 22:15:34,955 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:15:34,955 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:15:35,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:15:35,049 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;@7b6cfd4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:15:35,049 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:15:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2024-10-10 22:15:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-10 22:15:35,058 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:15:35,058 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:15:35,059 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:15:35,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:15:35,063 INFO L85 PathProgramCache]: Analyzing trace with hash -7457711, now seen corresponding path program 1 times [2024-10-10 22:15:35,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:15:35,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887244989] [2024-10-10 22:15:35,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:35,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:15:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:35,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:15:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:15:35,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:15:35,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887244989] [2024-10-10 22:15:35,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887244989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:15:35,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:15:35,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:15:35,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752751350] [2024-10-10 22:15:35,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:15:35,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:15:35,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:15:35,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:15:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:15:35,247 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-10 22:15:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:15:35,271 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2024-10-10 22:15:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:15:35,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-10-10 22:15:35,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:15:35,279 INFO L225 Difference]: With dead ends: 40 [2024-10-10 22:15:35,279 INFO L226 Difference]: Without dead ends: 19 [2024-10-10 22:15:35,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:15:35,285 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:15:35,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:15:35,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-10 22:15:35,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-10 22:15:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2024-10-10 22:15:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-10-10 22:15:35,319 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 14 [2024-10-10 22:15:35,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:15:35,320 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-10-10 22:15:35,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-10 22:15:35,320 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-10-10 22:15:35,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-10 22:15:35,322 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:15:35,322 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:15:35,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:15:35,322 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:15:35,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:15:35,323 INFO L85 PathProgramCache]: Analyzing trace with hash -856934570, now seen corresponding path program 1 times [2024-10-10 22:15:35,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:15:35,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800455942] [2024-10-10 22:15:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:35,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:15:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:35,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:15:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:35,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-10 22:15:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:35,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-10 22:15:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:15:35,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:15:35,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800455942] [2024-10-10 22:15:35,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800455942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:15:35,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:15:35,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 22:15:35,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279551919] [2024-10-10 22:15:35,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:15:35,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:15:35,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:15:35,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:15:35,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:15:35,703 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:15:35,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:15:35,733 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-10-10 22:15:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:15:35,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-10-10 22:15:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:15:35,736 INFO L225 Difference]: With dead ends: 24 [2024-10-10 22:15:35,736 INFO L226 Difference]: Without dead ends: 20 [2024-10-10 22:15:35,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:15:35,738 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:15:35,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 47 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:15:35,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-10 22:15:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-10 22:15:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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) [2024-10-10 22:15:35,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-10-10 22:15:35,745 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 26 [2024-10-10 22:15:35,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:15:35,746 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-10-10 22:15:35,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:15:35,747 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-10-10 22:15:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-10 22:15:35,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:15:35,748 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:15:35,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:15:35,748 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:15:35,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:15:35,749 INFO L85 PathProgramCache]: Analyzing trace with hash -765856431, now seen corresponding path program 1 times [2024-10-10 22:15:35,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:15:35,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001319014] [2024-10-10 22:15:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:35,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:15:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:35,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:15:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:35,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-10 22:15:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:35,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-10 22:15:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:15:35,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:15:35,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001319014] [2024-10-10 22:15:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001319014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:15:35,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:15:35,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-10 22:15:35,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006662915] [2024-10-10 22:15:35,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:15:35,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:15:35,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:15:35,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:15:35,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:15:35,919 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:15:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:15:35,982 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2024-10-10 22:15:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:15:35,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2024-10-10 22:15:35,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:15:35,984 INFO L225 Difference]: With dead ends: 37 [2024-10-10 22:15:35,984 INFO L226 Difference]: Without dead ends: 21 [2024-10-10 22:15:35,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:15:35,987 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:15:35,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 67 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:15:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-10 22:15:35,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-10 22:15:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2024-10-10 22:15:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-10-10 22:15:35,996 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 27 [2024-10-10 22:15:35,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:15:35,997 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-10-10 22:15:35,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:15:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-10-10 22:15:35,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-10 22:15:35,999 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:15:35,999 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:15:35,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 22:15:36,000 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:15:36,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:15:36,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1693469014, now seen corresponding path program 1 times [2024-10-10 22:15:36,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:15:36,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32877539] [2024-10-10 22:15:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:36,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:15:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:36,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:15:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:36,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 22:15:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:36,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-10 22:15:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-10 22:15:36,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:15:36,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32877539] [2024-10-10 22:15:36,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32877539] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:15:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74890673] [2024-10-10 22:15:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:36,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:15:36,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:15:36,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:15:36,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:15:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:36,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 22:15:36,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:15:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-10 22:15:36,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:15:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:15:37,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74890673] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:15:37,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:15:37,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10] total 19 [2024-10-10 22:15:37,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144047977] [2024-10-10 22:15:37,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:15:37,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 22:15:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:15:37,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 22:15:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:15:37,011 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 19 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 7 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-10 22:15:37,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:15:37,211 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2024-10-10 22:15:37,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-10 22:15:37,211 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 7 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) Word has length 28 [2024-10-10 22:15:37,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:15:37,213 INFO L225 Difference]: With dead ends: 63 [2024-10-10 22:15:37,213 INFO L226 Difference]: Without dead ends: 33 [2024-10-10 22:15:37,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-10-10 22:15:37,216 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:15:37,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 115 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:15:37,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-10-10 22:15:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2024-10-10 22:15:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2024-10-10 22:15:37,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-10-10 22:15:37,222 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2024-10-10 22:15:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:15:37,223 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-10-10 22:15:37,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 7 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-10 22:15:37,223 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-10-10 22:15:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-10 22:15:37,223 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:15:37,224 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:15:37,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 22:15:37,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:15:37,430 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:15:37,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:15:37,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1532817290, now seen corresponding path program 2 times [2024-10-10 22:15:37,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:15:37,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320292974] [2024-10-10 22:15:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:37,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:15:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:37,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:15:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:37,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:15:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:37,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:15:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:15:37,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:15:37,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320292974] [2024-10-10 22:15:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320292974] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:15:37,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928252112] [2024-10-10 22:15:37,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:15:37,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:15:37,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:15:37,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:15:37,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:15:37,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:15:37,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:15:37,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 22:15:37,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:15:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:15:37,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:15:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:15:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928252112] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:15:37,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:15:37,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-10 22:15:37,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034676582] [2024-10-10 22:15:37,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:15:37,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-10 22:15:37,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:15:37,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-10 22:15:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-10 22:15:37,878 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-10 22:15:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:15:37,994 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-10-10 22:15:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-10 22:15:37,995 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 30 [2024-10-10 22:15:37,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:15:37,997 INFO L225 Difference]: With dead ends: 33 [2024-10-10 22:15:37,997 INFO L226 Difference]: Without dead ends: 29 [2024-10-10 22:15:37,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:15:37,998 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:15:37,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 127 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:15:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-10 22:15:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-10-10 22:15:38,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 22:15:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-10-10 22:15:38,011 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 30 [2024-10-10 22:15:38,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:15:38,011 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-10-10 22:15:38,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-10 22:15:38,012 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-10-10 22:15:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-10 22:15:38,013 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:15:38,013 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:15:38,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 22:15:38,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:15:38,214 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:15:38,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:15:38,215 INFO L85 PathProgramCache]: Analyzing trace with hash 801599978, now seen corresponding path program 3 times [2024-10-10 22:15:38,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:15:38,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395418319] [2024-10-10 22:15:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:38,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:15:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-10 22:15:38,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490112919] [2024-10-10 22:15:38,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:15:38,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:15:38,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:15:38,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:15:38,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:15:38,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-10 22:15:38,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:15:38,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-10-10 22:15:38,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:15:38,614 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 11 treesize of output 7 [2024-10-10 22:15:38,621 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 11 treesize of output 7 [2024-10-10 22:15:38,674 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 19 treesize of output 18 [2024-10-10 22:15:38,685 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 19 treesize of output 20 [2024-10-10 22:15:38,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:15:38,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-10 22:15:38,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:15:38,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2024-10-10 22:15:41,053 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-10-10 22:15:41,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 510 treesize of output 459 [2024-10-10 22:15:41,507 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-10-10 22:15:41,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 518 treesize of output 467 [2024-10-10 22:15:41,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:41,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:41,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:41,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:41,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:41,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:42,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:42,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:42,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:42,092 INFO L224 Elim1Store]: Index analysis took 228 ms [2024-10-10 22:15:42,144 INFO L349 Elim1Store]: treesize reduction 254, result has 0.4 percent of original size [2024-10-10 22:15:42,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 7 select indices, 7 select index equivalence classes, 30 disjoint index pairs (out of 21 index pairs), introduced 15 new quantified variables, introduced 12 case distinctions, treesize of input 427 treesize of output 1517 [2024-10-10 22:15:43,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:43,716 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:15:43,757 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:15:43,774 INFO L224 Elim1Store]: Index analysis took 209 ms [2024-10-10 22:15:44,088 INFO L349 Elim1Store]: treesize reduction 372, result has 0.3 percent of original size [2024-10-10 22:15:44,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 8 select indices, 8 select index equivalence classes, 30 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 533 treesize of output 891 [2024-10-10 22:15:45,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:15:45,898 INFO L224 Elim1Store]: Index analysis took 205 ms [2024-10-10 22:15:46,006 INFO L349 Elim1Store]: treesize reduction 350, result has 0.3 percent of original size [2024-10-10 22:15:46,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 12 stores, 8 select indices, 8 select index equivalence classes, 39 disjoint index pairs (out of 28 index pairs), introduced 20 new quantified variables, introduced 16 case distinctions, treesize of input 995 treesize of output 3301 [2024-10-10 22:16:45,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:45,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:45,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:45,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:45,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:46,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:46,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:46,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:46,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:46,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:46,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:46,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:46,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:46,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:46,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:47,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:47,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:47,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:47,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:47,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:47,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:47,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:47,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:47,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:48,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:48,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:48,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:48,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:16:48,431 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:16:48,558 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:16:49,090 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:16:49,206 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:16:50,221 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:16:51,754 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:16:51,755 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:16:51,756 INFO L224 Elim1Store]: Index analysis took 6324 ms [2024-10-10 22:17:01,056 INFO L349 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2024-10-10 22:17:01,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 9 stores, 8 select indices, 8 select index equivalence classes, 35 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 1 case distinctions, treesize of input 468 treesize of output 1795