./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_05-lockfuns.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_05-lockfuns.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26a76453a0148a9083e5ca91fffcb3e5777f05c6718e7fe778e8f06905a5ca02 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:40:02,943 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:40:02,999 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:40:03,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:40:03,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:40:03,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:40:03,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:40:03,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:40:03,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:40:03,026 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:40:03,026 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:40:03,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:40:03,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:40:03,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:40:03,028 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:40:03,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:40:03,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:40:03,029 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:40:03,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:40:03,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:40:03,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:40:03,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:40:03,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:40:03,032 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:40:03,033 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:40:03,033 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:40:03,033 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:40:03,033 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:40:03,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:40:03,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:40:03,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:40:03,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:40:03,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:40:03,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:40:03,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:40:03,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:40:03,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:40:03,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:40:03,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:40:03,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:40:03,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:40:03,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:40:03,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:40:03,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:40:03,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26a76453a0148a9083e5ca91fffcb3e5777f05c6718e7fe778e8f06905a5ca02 [2024-10-13 16:40:03,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:40:03,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:40:03,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:40:03,239 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:40:03,239 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:40:03,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_05-lockfuns.i [2024-10-13 16:40:04,418 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:40:04,632 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:40:04,633 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_05-lockfuns.i [2024-10-13 16:40:04,645 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50480a12a/f4fae77cb77c43aba730a5c48582b5d5/FLAGeacd6882a [2024-10-13 16:40:04,660 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50480a12a/f4fae77cb77c43aba730a5c48582b5d5 [2024-10-13 16:40:04,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:40:04,663 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:40:04,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:40:04,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:40:04,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:40:04,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:40:04" (1/1) ... [2024-10-13 16:40:04,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f55aff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:04, skipping insertion in model container [2024-10-13 16:40:04,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:40:04" (1/1) ... [2024-10-13 16:40:04,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:40:05,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:40:05,009 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:40:05,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:40:05,101 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:40:05,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05 WrapperNode [2024-10-13 16:40:05,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:40:05,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:40:05,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:40:05,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:40:05,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,144 INFO L138 Inliner]: procedures = 264, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 51 [2024-10-13 16:40:05,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:40:05,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:40:05,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:40:05,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:40:05,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,155 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,167 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5]. The 0 writes are split as follows [0]. [2024-10-13 16:40:05,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,173 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:40:05,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:40:05,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:40:05,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:40:05,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (1/1) ... [2024-10-13 16:40:05,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:40:05,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:40:05,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:40:05,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:40:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:40:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:40:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:40:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 16:40:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 16:40:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:40:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:40:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:40:05,234 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:40:05,326 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:40:05,327 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:40:05,423 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:40:05,423 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:40:05,494 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:40:05,494 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 16:40:05,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:05 BoogieIcfgContainer [2024-10-13 16:40:05,495 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:40:05,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:40:05,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:40:05,500 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:40:05,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:40:04" (1/3) ... [2024-10-13 16:40:05,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3c854b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:40:05, skipping insertion in model container [2024-10-13 16:40:05,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:40:05" (2/3) ... [2024-10-13 16:40:05,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3c854b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:40:05, skipping insertion in model container [2024-10-13 16:40:05,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:05" (3/3) ... [2024-10-13 16:40:05,503 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_05-lockfuns.i [2024-10-13 16:40:05,516 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:40:05,516 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-13 16:40:05,517 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:40:05,543 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 16:40:05,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 53 flow [2024-10-13 16:40:05,585 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-10-13 16:40:05,585 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:40:05,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 22 events. 0/22 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-13 16:40:05,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 23 transitions, 53 flow [2024-10-13 16:40:05,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2024-10-13 16:40:05,595 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:40:05,601 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;@12a0d7ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:40:05,601 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 16:40:05,605 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:40:05,605 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-13 16:40:05,605 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:05,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:05,606 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 16:40:05,608 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 16:40:05,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:05,613 INFO L85 PathProgramCache]: Analyzing trace with hash 252943674, now seen corresponding path program 1 times [2024-10-13 16:40:05,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:05,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194671566] [2024-10-13 16:40:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:05,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:05,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194671566] [2024-10-13 16:40:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194671566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:05,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:05,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:05,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654741832] [2024-10-13 16:40:05,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:05,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:05,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:05,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:05,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:05,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-13 16:40:05,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:05,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:05,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-13 16:40:05,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:06,069 INFO L124 PetriNetUnfolderBase]: 42/117 cut-off events. [2024-10-13 16:40:06,069 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:40:06,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 117 events. 42/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 393 event pairs, 18 based on Foata normal form. 7/118 useless extension candidates. Maximal degree in co-relation 214. Up to 73 conditions per place. [2024-10-13 16:40:06,072 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 21 selfloop transitions, 4 changer transitions 6/35 dead transitions. [2024-10-13 16:40:06,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 135 flow [2024-10-13 16:40:06,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:06,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-10-13 16:40:06,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-10-13 16:40:06,083 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 5 states and 60 transitions. [2024-10-13 16:40:06,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 135 flow [2024-10-13 16:40:06,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 35 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:06,087 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 67 flow [2024-10-13 16:40:06,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2024-10-13 16:40:06,091 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2024-10-13 16:40:06,091 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 67 flow [2024-10-13 16:40:06,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:06,092 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 16:40:06,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:40:06,093 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 16:40:06,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash 252744116, now seen corresponding path program 1 times [2024-10-13 16:40:06,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:06,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765506795] [2024-10-13 16:40:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:06,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:06,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:06,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765506795] [2024-10-13 16:40:06,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765506795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:06,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:06,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:40:06,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001685662] [2024-10-13 16:40:06,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:06,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:40:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:40:06,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:40:06,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-13 16:40:06,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:06,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-13 16:40:06,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:06,232 INFO L124 PetriNetUnfolderBase]: 29/98 cut-off events. [2024-10-13 16:40:06,234 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-13 16:40:06,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 98 events. 29/98 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 323 event pairs, 14 based on Foata normal form. 14/112 useless extension candidates. Maximal degree in co-relation 210. Up to 51 conditions per place. [2024-10-13 16:40:06,236 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 20 selfloop transitions, 4 changer transitions 4/32 dead transitions. [2024-10-13 16:40:06,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 152 flow [2024-10-13 16:40:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:40:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:40:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-10-13 16:40:06,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4956521739130435 [2024-10-13 16:40:06,238 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 67 flow. Second operand 5 states and 57 transitions. [2024-10-13 16:40:06,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 152 flow [2024-10-13 16:40:06,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 144 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:40:06,241 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 85 flow [2024-10-13 16:40:06,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2024-10-13 16:40:06,243 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2024-10-13 16:40:06,243 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 85 flow [2024-10-13 16:40:06,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:06,243 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:06,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:40:06,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 16:40:06,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:06,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1185705634, now seen corresponding path program 1 times [2024-10-13 16:40:06,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:06,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694768674] [2024-10-13 16:40:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:06,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:06,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:06,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694768674] [2024-10-13 16:40:06,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694768674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:06,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:06,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:40:06,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408736020] [2024-10-13 16:40:06,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:06,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:40:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:06,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:40:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:40:06,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 23 [2024-10-13 16:40:06,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:06,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 23 [2024-10-13 16:40:06,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:06,353 INFO L124 PetriNetUnfolderBase]: 15/64 cut-off events. [2024-10-13 16:40:06,355 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-13 16:40:06,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 64 events. 15/64 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 170 event pairs, 5 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 144. Up to 30 conditions per place. [2024-10-13 16:40:06,356 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 16 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-10-13 16:40:06,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 133 flow [2024-10-13 16:40:06,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:40:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:40:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2024-10-13 16:40:06,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-10-13 16:40:06,359 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 85 flow. Second operand 3 states and 41 transitions. [2024-10-13 16:40:06,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 133 flow [2024-10-13 16:40:06,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 126 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:40:06,360 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 86 flow [2024-10-13 16:40:06,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-10-13 16:40:06,361 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2024-10-13 16:40:06,361 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 86 flow [2024-10-13 16:40:06,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:06,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:06,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:40:06,362 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 16:40:06,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1267816491, now seen corresponding path program 1 times [2024-10-13 16:40:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:06,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578823441] [2024-10-13 16:40:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:06,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:06,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:06,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578823441] [2024-10-13 16:40:06,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578823441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:06,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:06,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:40:06,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394322338] [2024-10-13 16:40:06,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:06,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:40:06,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:06,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:40:06,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:40:06,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-10-13 16:40:06,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:06,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-10-13 16:40:06,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:06,548 INFO L124 PetriNetUnfolderBase]: 18/65 cut-off events. [2024-10-13 16:40:06,548 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-13 16:40:06,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 65 events. 18/65 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 153 event pairs, 9 based on Foata normal form. 2/67 useless extension candidates. Maximal degree in co-relation 156. Up to 22 conditions per place. [2024-10-13 16:40:06,549 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 20 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2024-10-13 16:40:06,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 148 flow [2024-10-13 16:40:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:40:06,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:40:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 44 transitions. [2024-10-13 16:40:06,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3188405797101449 [2024-10-13 16:40:06,555 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 86 flow. Second operand 6 states and 44 transitions. [2024-10-13 16:40:06,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 148 flow [2024-10-13 16:40:06,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:40:06,558 INFO L231 Difference]: Finished difference. Result has 36 places, 21 transitions, 88 flow [2024-10-13 16:40:06,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2024-10-13 16:40:06,558 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2024-10-13 16:40:06,558 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 88 flow [2024-10-13 16:40:06,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:06,559 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:06,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:40:06,559 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 16:40:06,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:06,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1871253424, now seen corresponding path program 1 times [2024-10-13 16:40:06,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:06,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894814516] [2024-10-13 16:40:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:06,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:06,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:06,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894814516] [2024-10-13 16:40:06,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894814516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:06,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:06,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:40:06,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459224207] [2024-10-13 16:40:06,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:06,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:40:06,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:06,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:40:06,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:40:06,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-10-13 16:40:06,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:06,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-10-13 16:40:06,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:06,717 INFO L124 PetriNetUnfolderBase]: 17/62 cut-off events. [2024-10-13 16:40:06,718 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-10-13 16:40:06,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 62 events. 17/62 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 141 event pairs, 8 based on Foata normal form. 2/64 useless extension candidates. Maximal degree in co-relation 148. Up to 19 conditions per place. [2024-10-13 16:40:06,719 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 19 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2024-10-13 16:40:06,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 146 flow [2024-10-13 16:40:06,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:40:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:40:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2024-10-13 16:40:06,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3115942028985507 [2024-10-13 16:40:06,720 INFO L175 Difference]: Start difference. First operand has 36 places, 21 transitions, 88 flow. Second operand 6 states and 43 transitions. [2024-10-13 16:40:06,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 146 flow [2024-10-13 16:40:06,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 134 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 16:40:06,721 INFO L231 Difference]: Finished difference. Result has 36 places, 20 transitions, 82 flow [2024-10-13 16:40:06,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2024-10-13 16:40:06,724 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2024-10-13 16:40:06,724 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 82 flow [2024-10-13 16:40:06,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:06,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:06,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:40:06,725 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 16:40:06,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:06,728 INFO L85 PathProgramCache]: Analyzing trace with hash -647605385, now seen corresponding path program 1 times [2024-10-13 16:40:06,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:06,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323802003] [2024-10-13 16:40:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:06,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:06,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:06,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323802003] [2024-10-13 16:40:06,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323802003] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:06,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:06,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:40:06,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146587430] [2024-10-13 16:40:06,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:06,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:40:06,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:06,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:40:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:40:06,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-10-13 16:40:06,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:06,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-10-13 16:40:06,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:06,847 INFO L124 PetriNetUnfolderBase]: 16/59 cut-off events. [2024-10-13 16:40:06,847 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-10-13 16:40:06,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 59 events. 16/59 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 7 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 138. Up to 19 conditions per place. [2024-10-13 16:40:06,848 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 11 selfloop transitions, 3 changer transitions 10/26 dead transitions. [2024-10-13 16:40:06,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 26 transitions, 142 flow [2024-10-13 16:40:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:40:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:40:06,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 46 transitions. [2024-10-13 16:40:06,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2024-10-13 16:40:06,849 INFO L175 Difference]: Start difference. First operand has 36 places, 20 transitions, 82 flow. Second operand 7 states and 46 transitions. [2024-10-13 16:40:06,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 26 transitions, 142 flow [2024-10-13 16:40:06,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 128 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-13 16:40:06,858 INFO L231 Difference]: Finished difference. Result has 36 places, 14 transitions, 50 flow [2024-10-13 16:40:06,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=50, PETRI_PLACES=36, PETRI_TRANSITIONS=14} [2024-10-13 16:40:06,862 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2024-10-13 16:40:06,863 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 14 transitions, 50 flow [2024-10-13 16:40:06,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:40:06,864 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:06,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:40:06,864 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 16:40:06,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:40:06,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2120685843, now seen corresponding path program 1 times [2024-10-13 16:40:06,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:40:06,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604687956] [2024-10-13 16:40:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:40:06,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:40:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:40:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:40:06,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:40:06,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604687956] [2024-10-13 16:40:06,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604687956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:40:06,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:40:06,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:40:06,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011672384] [2024-10-13 16:40:06,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:40:06,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:40:06,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:40:06,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:40:06,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:40:06,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-10-13 16:40:06,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 14 transitions, 50 flow. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:40:06,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-10-13 16:40:06,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:40:06,992 INFO L124 PetriNetUnfolderBase]: 9/34 cut-off events. [2024-10-13 16:40:06,992 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-13 16:40:06,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 34 events. 9/34 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 4 based on Foata normal form. 2/36 useless extension candidates. Maximal degree in co-relation 81. Up to 12 conditions per place. [2024-10-13 16:40:06,993 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2024-10-13 16:40:06,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 17 transitions, 85 flow [2024-10-13 16:40:06,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:40:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:40:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2024-10-13 16:40:06,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2463768115942029 [2024-10-13 16:40:06,994 INFO L175 Difference]: Start difference. First operand has 36 places, 14 transitions, 50 flow. Second operand 6 states and 34 transitions. [2024-10-13 16:40:06,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 17 transitions, 85 flow [2024-10-13 16:40:06,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 73 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 16:40:06,995 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2024-10-13 16:40:06,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2024-10-13 16:40:06,995 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2024-10-13 16:40:06,995 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2024-10-13 16:40:06,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:40:06,997 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2024-10-13 16:40:06,998 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2024-10-13 16:40:06,998 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-10-13 16:40:06,998 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2024-10-13 16:40:06,999 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2024-10-13 16:40:06,999 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2024-10-13 16:40:06,999 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2024-10-13 16:40:06,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:40:06,999 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:40:07,003 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 16:40:07,003 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 16:40:07,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:40:07 BasicIcfg [2024-10-13 16:40:07,007 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 16:40:07,008 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:40:07,008 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:40:07,008 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:40:07,008 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:40:05" (3/4) ... [2024-10-13 16:40:07,011 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 16:40:07,013 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-13 16:40:07,016 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-10-13 16:40:07,016 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-13 16:40:07,016 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-13 16:40:07,079 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:40:07,080 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 16:40:07,080 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:40:07,080 INFO L158 Benchmark]: Toolchain (without parser) took 2417.85ms. Allocated memory is still 199.2MB. Free memory was 167.3MB in the beginning and 144.0MB in the end (delta: 23.3MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2024-10-13 16:40:07,081 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 121.6MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:40:07,081 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.63ms. Allocated memory is still 199.2MB. Free memory was 166.4MB in the beginning and 137.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-13 16:40:07,081 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.16ms. Allocated memory is still 199.2MB. Free memory was 137.1MB in the beginning and 135.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:07,081 INFO L158 Benchmark]: Boogie Preprocessor took 31.76ms. Allocated memory is still 199.2MB. Free memory was 135.0MB in the beginning and 132.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:40:07,081 INFO L158 Benchmark]: RCFGBuilder took 317.82ms. Allocated memory is still 199.2MB. Free memory was 132.9MB in the beginning and 114.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-13 16:40:07,082 INFO L158 Benchmark]: TraceAbstraction took 1510.16ms. Allocated memory is still 199.2MB. Free memory was 114.0MB in the beginning and 148.2MB in the end (delta: -34.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:40:07,082 INFO L158 Benchmark]: Witness Printer took 72.37ms. Allocated memory is still 199.2MB. Free memory was 148.2MB in the beginning and 144.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 16:40:07,083 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 121.6MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.63ms. Allocated memory is still 199.2MB. Free memory was 166.4MB in the beginning and 137.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.16ms. Allocated memory is still 199.2MB. Free memory was 137.1MB in the beginning and 135.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.76ms. Allocated memory is still 199.2MB. Free memory was 135.0MB in the beginning and 132.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 317.82ms. Allocated memory is still 199.2MB. Free memory was 132.9MB in the beginning and 114.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1510.16ms. Allocated memory is still 199.2MB. Free memory was 114.0MB in the beginning and 148.2MB in the end (delta: -34.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 72.37ms. Allocated memory is still 199.2MB. Free memory was 148.2MB in the beginning and 144.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 935]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 935]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 927]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 927]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 35 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 138 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 126 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 477 IncrementalHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 12 mSDtfsCounter, 477 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=4, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 184 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 16:40:07,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE