./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_07-ps_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 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_07-ps_nr.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 01b589988edaaecd88451f82bd4303dff81e52948b89e1e090cb7433d59bd20b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 21:53:03,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 21:53:04,057 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 21:53:04,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 21:53:04,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 21:53:04,084 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 21:53:04,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 21:53:04,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 21:53:04,086 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 21:53:04,087 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 21:53:04,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 21:53:04,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 21:53:04,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 21:53:04,088 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 21:53:04,089 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 21:53:04,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 21:53:04,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 21:53:04,092 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 21:53:04,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 21:53:04,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 21:53:04,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 21:53:04,093 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 21:53:04,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 21:53:04,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 21:53:04,094 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 21:53:04,094 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 21:53:04,094 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 21:53:04,094 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 21:53:04,094 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 21:53:04,095 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 21:53:04,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 21:53:04,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 21:53:04,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 21:53:04,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 21:53:04,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:53:04,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 21:53:04,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 21:53:04,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 21:53:04,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 21:53:04,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 21:53:04,101 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 21:53:04,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 21:53:04,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 21:53:04,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 21:53:04,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01b589988edaaecd88451f82bd4303dff81e52948b89e1e090cb7433d59bd20b [2024-11-20 21:53:04,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 21:53:04,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 21:53:04,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 21:53:04,410 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 21:53:04,410 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 21:53:04,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_07-ps_nr.i [2024-11-20 21:53:05,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 21:53:06,023 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 21:53:06,024 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_07-ps_nr.i [2024-11-20 21:53:06,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa9f618b/5b12bc5452c641869e84caa6e045a727/FLAGeb8fe6245 [2024-11-20 21:53:06,054 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa9f618b/5b12bc5452c641869e84caa6e045a727 [2024-11-20 21:53:06,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 21:53:06,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 21:53:06,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 21:53:06,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 21:53:06,064 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 21:53:06,065 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35d5bd8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06, skipping insertion in model container [2024-11-20 21:53:06,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,114 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 21:53:06,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:53:06,548 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 21:53:06,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:53:06,659 INFO L204 MainTranslator]: Completed translation [2024-11-20 21:53:06,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06 WrapperNode [2024-11-20 21:53:06,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 21:53:06,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 21:53:06,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 21:53:06,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 21:53:06,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,704 INFO L138 Inliner]: procedures = 266, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2024-11-20 21:53:06,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 21:53:06,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 21:53:06,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 21:53:06,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 21:53:06,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,729 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]. [2024-11-20 21:53:06,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 21:53:06,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 21:53:06,740 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 21:53:06,740 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 21:53:06,741 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (1/1) ... [2024-11-20 21:53:06,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:53:06,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:53:06,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 21:53:06,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 21:53:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 21:53:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 21:53:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 21:53:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 21:53:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 21:53:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 21:53:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 21:53:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 21:53:06,843 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 21:53:07,011 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 21:53:07,013 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 21:53:07,159 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 21:53:07,159 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 21:53:07,263 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 21:53:07,264 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 21:53:07,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:53:07 BoogieIcfgContainer [2024-11-20 21:53:07,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 21:53:07,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 21:53:07,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 21:53:07,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 21:53:07,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:53:06" (1/3) ... [2024-11-20 21:53:07,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1d031b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:53:07, skipping insertion in model container [2024-11-20 21:53:07,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:53:06" (2/3) ... [2024-11-20 21:53:07,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1d031b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:53:07, skipping insertion in model container [2024-11-20 21:53:07,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:53:07" (3/3) ... [2024-11-20 21:53:07,275 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_07-ps_nr.i [2024-11-20 21:53:07,293 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 21:53:07,293 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-20 21:53:07,293 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 21:53:07,332 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 21:53:07,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 60 flow [2024-11-20 21:53:07,399 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2024-11-20 21:53:07,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:07,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 27 events. 3/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 56 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-20 21:53:07,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 60 flow [2024-11-20 21:53:07,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 27 transitions, 57 flow [2024-11-20 21:53:07,423 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:53:07,432 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;@72d32eea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:53:07,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-20 21:53:07,439 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:53:07,439 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2024-11-20 21:53:07,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:07,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:07,441 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 21:53:07,442 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)] === [2024-11-20 21:53:07,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:07,447 INFO L85 PathProgramCache]: Analyzing trace with hash 955312178, now seen corresponding path program 1 times [2024-11-20 21:53:07,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:07,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245921607] [2024-11-20 21:53:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:07,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:07,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:07,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245921607] [2024-11-20 21:53:07,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245921607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:07,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:07,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:53:07,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266661898] [2024-11-20 21:53:07,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:07,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:53:07,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:07,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:53:07,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:53:07,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-11-20 21:53:07,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:07,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:07,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-11-20 21:53:07,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:07,970 INFO L124 PetriNetUnfolderBase]: 91/219 cut-off events. [2024-11-20 21:53:07,970 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:53:07,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 219 events. 91/219 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 953 event pairs, 31 based on Foata normal form. 11/200 useless extension candidates. Maximal degree in co-relation 391. Up to 81 conditions per place. [2024-11-20 21:53:07,975 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 29 selfloop transitions, 6 changer transitions 4/49 dead transitions. [2024-11-20 21:53:07,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 49 transitions, 179 flow [2024-11-20 21:53:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:53:07,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:53:07,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-11-20 21:53:07,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-20 21:53:07,992 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 57 flow. Second operand 5 states and 96 transitions. [2024-11-20 21:53:07,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 49 transitions, 179 flow [2024-11-20 21:53:07,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:53:08,000 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 94 flow [2024-11-20 21:53:08,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-11-20 21:53:08,008 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2024-11-20 21:53:08,008 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 94 flow [2024-11-20 21:53:08,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:08,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:08,009 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:08,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 21:53:08,010 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)] === [2024-11-20 21:53:08,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:08,011 INFO L85 PathProgramCache]: Analyzing trace with hash -459158278, now seen corresponding path program 1 times [2024-11-20 21:53:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:08,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036548379] [2024-11-20 21:53:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:08,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:08,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:08,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036548379] [2024-11-20 21:53:08,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036548379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:08,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:08,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:53:08,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798957762] [2024-11-20 21:53:08,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:08,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 21:53:08,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:08,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 21:53:08,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 21:53:08,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-11-20 21:53:08,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 94 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) [2024-11-20 21:53:08,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:08,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-11-20 21:53:08,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:08,260 INFO L124 PetriNetUnfolderBase]: 91/241 cut-off events. [2024-11-20 21:53:08,260 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-11-20 21:53:08,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 241 events. 91/241 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1108 event pairs, 49 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 530. Up to 135 conditions per place. [2024-11-20 21:53:08,263 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 26 selfloop transitions, 4 changer transitions 3/41 dead transitions. [2024-11-20 21:53:08,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 192 flow [2024-11-20 21:53:08,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 21:53:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 21:53:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-11-20 21:53:08,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-20 21:53:08,265 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 94 flow. Second operand 3 states and 56 transitions. [2024-11-20 21:53:08,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 192 flow [2024-11-20 21:53:08,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:53:08,268 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 126 flow [2024-11-20 21:53:08,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-20 21:53:08,269 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 11 predicate places. [2024-11-20 21:53:08,269 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 126 flow [2024-11-20 21:53:08,269 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) [2024-11-20 21:53:08,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:08,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:08,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 21:53:08,270 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 21:53:08,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash -450093366, now seen corresponding path program 1 times [2024-11-20 21:53:08,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:08,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830992509] [2024-11-20 21:53:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:08,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:08,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:08,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830992509] [2024-11-20 21:53:08,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830992509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:08,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:08,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:53:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382540128] [2024-11-20 21:53:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:08,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:53:08,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:53:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:53:08,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-11-20 21:53:08,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:08,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:08,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-11-20 21:53:08,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:08,477 INFO L124 PetriNetUnfolderBase]: 67/191 cut-off events. [2024-11-20 21:53:08,477 INFO L125 PetriNetUnfolderBase]: For 133/144 co-relation queries the response was YES. [2024-11-20 21:53:08,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 191 events. 67/191 cut-off events. For 133/144 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 852 event pairs, 21 based on Foata normal form. 17/205 useless extension candidates. Maximal degree in co-relation 476. Up to 99 conditions per place. [2024-11-20 21:53:08,480 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 27 selfloop transitions, 5 changer transitions 8/50 dead transitions. [2024-11-20 21:53:08,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 256 flow [2024-11-20 21:53:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:53:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:53:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-11-20 21:53:08,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-11-20 21:53:08,483 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 126 flow. Second operand 5 states and 93 transitions. [2024-11-20 21:53:08,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 256 flow [2024-11-20 21:53:08,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:53:08,488 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 107 flow [2024-11-20 21:53:08,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2024-11-20 21:53:08,489 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2024-11-20 21:53:08,490 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 107 flow [2024-11-20 21:53:08,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:08,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:08,491 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:08,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 21:53:08,491 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 21:53:08,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1350540546, now seen corresponding path program 1 times [2024-11-20 21:53:08,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:08,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29744993] [2024-11-20 21:53:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:08,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:08,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:08,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29744993] [2024-11-20 21:53:08,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29744993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:08,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:08,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:53:08,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831281318] [2024-11-20 21:53:08,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:08,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:53:08,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:08,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:53:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:53:08,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-11-20 21:53:08,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:08,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:08,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-11-20 21:53:08,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:08,649 INFO L124 PetriNetUnfolderBase]: 49/148 cut-off events. [2024-11-20 21:53:08,649 INFO L125 PetriNetUnfolderBase]: For 120/122 co-relation queries the response was YES. [2024-11-20 21:53:08,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 148 events. 49/148 cut-off events. For 120/122 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 638 event pairs, 17 based on Foata normal form. 7/151 useless extension candidates. Maximal degree in co-relation 350. Up to 44 conditions per place. [2024-11-20 21:53:08,651 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 24 selfloop transitions, 7 changer transitions 2/43 dead transitions. [2024-11-20 21:53:08,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 217 flow [2024-11-20 21:53:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:53:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:53:08,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-20 21:53:08,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2024-11-20 21:53:08,652 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 107 flow. Second operand 5 states and 87 transitions. [2024-11-20 21:53:08,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 217 flow [2024-11-20 21:53:08,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 198 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-20 21:53:08,655 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 141 flow [2024-11-20 21:53:08,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-11-20 21:53:08,655 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2024-11-20 21:53:08,655 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 141 flow [2024-11-20 21:53:08,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:08,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:08,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:08,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 21:53:08,656 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 21:53:08,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1082916209, now seen corresponding path program 1 times [2024-11-20 21:53:08,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:08,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130493297] [2024-11-20 21:53:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:08,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:08,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:08,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130493297] [2024-11-20 21:53:08,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130493297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:08,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:08,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:53:08,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862676549] [2024-11-20 21:53:08,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:08,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:53:08,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:08,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:53:08,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:53:08,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-11-20 21:53:08,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:08,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:08,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-11-20 21:53:08,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:08,777 INFO L124 PetriNetUnfolderBase]: 43/139 cut-off events. [2024-11-20 21:53:08,777 INFO L125 PetriNetUnfolderBase]: For 138/140 co-relation queries the response was YES. [2024-11-20 21:53:08,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 139 events. 43/139 cut-off events. For 138/140 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 596 event pairs, 16 based on Foata normal form. 7/142 useless extension candidates. Maximal degree in co-relation 346. Up to 52 conditions per place. [2024-11-20 21:53:08,779 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 22 selfloop transitions, 7 changer transitions 4/43 dead transitions. [2024-11-20 21:53:08,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 232 flow [2024-11-20 21:53:08,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:53:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:53:08,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-20 21:53:08,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-20 21:53:08,782 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 141 flow. Second operand 5 states and 89 transitions. [2024-11-20 21:53:08,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 232 flow [2024-11-20 21:53:08,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:53:08,784 INFO L231 Difference]: Finished difference. Result has 47 places, 30 transitions, 139 flow [2024-11-20 21:53:08,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2024-11-20 21:53:08,787 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 19 predicate places. [2024-11-20 21:53:08,787 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 139 flow [2024-11-20 21:53:08,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:08,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:08,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:08,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 21:53:08,788 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 21:53:08,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:08,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1316296367, now seen corresponding path program 1 times [2024-11-20 21:53:08,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:08,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327703369] [2024-11-20 21:53:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:08,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:08,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:08,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327703369] [2024-11-20 21:53:08,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327703369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:08,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:08,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:53:08,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782625379] [2024-11-20 21:53:08,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:08,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 21:53:08,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:08,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 21:53:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 21:53:08,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 28 [2024-11-20 21:53:08,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:08,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:08,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 28 [2024-11-20 21:53:08,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:08,918 INFO L124 PetriNetUnfolderBase]: 16/82 cut-off events. [2024-11-20 21:53:08,918 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-20 21:53:08,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 82 events. 16/82 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 245 event pairs, 4 based on Foata normal form. 10/90 useless extension candidates. Maximal degree in co-relation 201. Up to 40 conditions per place. [2024-11-20 21:53:08,919 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 16 selfloop transitions, 4 changer transitions 3/34 dead transitions. [2024-11-20 21:53:08,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 34 transitions, 199 flow [2024-11-20 21:53:08,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 21:53:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 21:53:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-20 21:53:08,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-11-20 21:53:08,921 INFO L175 Difference]: Start difference. First operand has 47 places, 30 transitions, 139 flow. Second operand 3 states and 60 transitions. [2024-11-20 21:53:08,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 34 transitions, 199 flow [2024-11-20 21:53:08,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 175 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-20 21:53:08,923 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 117 flow [2024-11-20 21:53:08,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2024-11-20 21:53:08,924 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2024-11-20 21:53:08,924 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 117 flow [2024-11-20 21:53:08,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:08,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:08,925 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:08,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 21:53:08,925 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 21:53:08,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash -899599102, now seen corresponding path program 1 times [2024-11-20 21:53:08,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:08,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059256843] [2024-11-20 21:53:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:08,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:09,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:09,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059256843] [2024-11-20 21:53:09,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059256843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:09,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:09,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 21:53:09,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901515866] [2024-11-20 21:53:09,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:09,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 21:53:09,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:09,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 21:53:09,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 21:53:09,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-11-20 21:53:09,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:09,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:09,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-11-20 21:53:09,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:09,140 INFO L124 PetriNetUnfolderBase]: 19/81 cut-off events. [2024-11-20 21:53:09,140 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-20 21:53:09,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 81 events. 19/81 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 239 event pairs, 8 based on Foata normal form. 2/82 useless extension candidates. Maximal degree in co-relation 205. Up to 24 conditions per place. [2024-11-20 21:53:09,141 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 21 selfloop transitions, 6 changer transitions 3/37 dead transitions. [2024-11-20 21:53:09,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 37 transitions, 202 flow [2024-11-20 21:53:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 21:53:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 21:53:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-11-20 21:53:09,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-11-20 21:53:09,142 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 117 flow. Second operand 7 states and 94 transitions. [2024-11-20 21:53:09,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 37 transitions, 202 flow [2024-11-20 21:53:09,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 188 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-20 21:53:09,144 INFO L231 Difference]: Finished difference. Result has 47 places, 27 transitions, 117 flow [2024-11-20 21:53:09,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=117, PETRI_PLACES=47, PETRI_TRANSITIONS=27} [2024-11-20 21:53:09,145 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 19 predicate places. [2024-11-20 21:53:09,145 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 117 flow [2024-11-20 21:53:09,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:09,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:09,147 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:09,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 21:53:09,149 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 21:53:09,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:09,149 INFO L85 PathProgramCache]: Analyzing trace with hash -245857133, now seen corresponding path program 1 times [2024-11-20 21:53:09,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:09,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021160723] [2024-11-20 21:53:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:09,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:09,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:09,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021160723] [2024-11-20 21:53:09,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021160723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:09,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:09,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 21:53:09,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637811083] [2024-11-20 21:53:09,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:09,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 21:53:09,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:09,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 21:53:09,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 21:53:09,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-11-20 21:53:09,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:09,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:09,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-11-20 21:53:09,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:09,328 INFO L124 PetriNetUnfolderBase]: 18/77 cut-off events. [2024-11-20 21:53:09,328 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-11-20 21:53:09,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 77 events. 18/77 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 223 event pairs, 5 based on Foata normal form. 2/78 useless extension candidates. Maximal degree in co-relation 186. Up to 24 conditions per place. [2024-11-20 21:53:09,330 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 12 selfloop transitions, 7 changer transitions 16/40 dead transitions. [2024-11-20 21:53:09,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 40 transitions, 219 flow [2024-11-20 21:53:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 21:53:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 21:53:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-11-20 21:53:09,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-11-20 21:53:09,332 INFO L175 Difference]: Start difference. First operand has 47 places, 27 transitions, 117 flow. Second operand 10 states and 124 transitions. [2024-11-20 21:53:09,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 40 transitions, 219 flow [2024-11-20 21:53:09,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 40 transitions, 201 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-20 21:53:09,334 INFO L231 Difference]: Finished difference. Result has 49 places, 21 transitions, 86 flow [2024-11-20 21:53:09,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=86, PETRI_PLACES=49, PETRI_TRANSITIONS=21} [2024-11-20 21:53:09,337 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 21 predicate places. [2024-11-20 21:53:09,337 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 21 transitions, 86 flow [2024-11-20 21:53:09,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:09,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:09,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:09,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 21:53:09,340 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 21:53:09,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:09,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1010660072, now seen corresponding path program 1 times [2024-11-20 21:53:09,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:09,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661572607] [2024-11-20 21:53:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:09,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:09,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661572607] [2024-11-20 21:53:09,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661572607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:09,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:09,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 21:53:09,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751382532] [2024-11-20 21:53:09,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:09,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 21:53:09,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 21:53:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 21:53:09,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-11-20 21:53:09,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 21 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:09,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:09,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-11-20 21:53:09,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:09,511 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2024-11-20 21:53:09,512 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-20 21:53:09,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 29 events. 4/29 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 1 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 66. Up to 8 conditions per place. [2024-11-20 21:53:09,512 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 10 selfloop transitions, 7 changer transitions 1/23 dead transitions. [2024-11-20 21:53:09,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 23 transitions, 125 flow [2024-11-20 21:53:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 21:53:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 21:53:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-11-20 21:53:09,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-11-20 21:53:09,516 INFO L175 Difference]: Start difference. First operand has 49 places, 21 transitions, 86 flow. Second operand 8 states and 92 transitions. [2024-11-20 21:53:09,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 23 transitions, 125 flow [2024-11-20 21:53:09,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 99 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-11-20 21:53:09,517 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 67 flow [2024-11-20 21:53:09,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=67, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2024-11-20 21:53:09,517 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-11-20 21:53:09,517 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 67 flow [2024-11-20 21:53:09,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:09,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:53:09,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:09,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 21:53:09,519 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 21:53:09,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:53:09,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1101046572, now seen corresponding path program 1 times [2024-11-20 21:53:09,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:53:09,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063482684] [2024-11-20 21:53:09,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:53:09,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:53:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:53:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:53:09,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:53:09,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063482684] [2024-11-20 21:53:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063482684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:53:09,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:53:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 21:53:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342571160] [2024-11-20 21:53:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:53:09,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 21:53:09,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:53:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 21:53:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 21:53:09,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-11-20 21:53:09,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 67 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:09,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:53:09,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-11-20 21:53:09,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:53:09,661 INFO L124 PetriNetUnfolderBase]: 3/26 cut-off events. [2024-11-20 21:53:09,661 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-20 21:53:09,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 26 events. 3/26 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 1 based on Foata normal form. 2/27 useless extension candidates. Maximal degree in co-relation 52. Up to 8 conditions per place. [2024-11-20 21:53:09,662 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2024-11-20 21:53:09,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 21 transitions, 101 flow [2024-11-20 21:53:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 21:53:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 21:53:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-11-20 21:53:09,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-11-20 21:53:09,663 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 67 flow. Second operand 8 states and 90 transitions. [2024-11-20 21:53:09,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 21 transitions, 101 flow [2024-11-20 21:53:09,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 21 transitions, 90 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-20 21:53:09,664 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2024-11-20 21:53:09,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2024-11-20 21:53:09,665 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-11-20 21:53:09,665 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2024-11-20 21:53:09,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:53:09,668 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2024-11-20 21:53:09,668 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2024-11-20 21:53:09,668 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-20 21:53:09,668 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2024-11-20 21:53:09,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2024-11-20 21:53:09,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2024-11-20 21:53:09,669 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2024-11-20 21:53:09,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 21:53:09,669 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:53:09,675 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 21:53:09,675 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 21:53:09,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:53:09 BasicIcfg [2024-11-20 21:53:09,680 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 21:53:09,680 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 21:53:09,680 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 21:53:09,680 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 21:53:09,681 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:53:07" (3/4) ... [2024-11-20 21:53:09,682 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 21:53:09,684 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-20 21:53:09,687 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2024-11-20 21:53:09,687 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-20 21:53:09,688 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 21:53:09,772 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 21:53:09,772 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 21:53:09,772 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 21:53:09,773 INFO L158 Benchmark]: Toolchain (without parser) took 3715.26ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 121.5MB in the beginning and 107.6MB in the end (delta: 13.9MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2024-11-20 21:53:09,776 INFO L158 Benchmark]: CDTParser took 0.91ms. Allocated memory is still 100.7MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 21:53:09,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 601.24ms. Allocated memory is still 165.7MB. Free memory was 121.5MB in the beginning and 91.0MB in the end (delta: 30.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-20 21:53:09,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.97ms. Allocated memory is still 165.7MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 21:53:09,777 INFO L158 Benchmark]: Boogie Preprocessor took 34.35ms. Allocated memory is still 165.7MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 21:53:09,777 INFO L158 Benchmark]: RCFGBuilder took 524.73ms. Allocated memory is still 165.7MB. Free memory was 86.8MB in the beginning and 117.0MB in the end (delta: -30.2MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-11-20 21:53:09,777 INFO L158 Benchmark]: TraceAbstraction took 2411.75ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 116.4MB in the beginning and 111.8MB in the end (delta: 4.6MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2024-11-20 21:53:09,777 INFO L158 Benchmark]: Witness Printer took 92.27ms. Allocated memory is still 199.2MB. Free memory was 111.8MB in the beginning and 107.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 21:53:09,779 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91ms. Allocated memory is still 100.7MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 601.24ms. Allocated memory is still 165.7MB. Free memory was 121.5MB in the beginning and 91.0MB in the end (delta: 30.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.97ms. Allocated memory is still 165.7MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.35ms. Allocated memory is still 165.7MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.73ms. Allocated memory is still 165.7MB. Free memory was 86.8MB in the beginning and 117.0MB in the end (delta: -30.2MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2411.75ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 116.4MB in the beginning and 111.8MB in the end (delta: 4.6MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. * Witness Printer took 92.27ms. Allocated memory is still 199.2MB. Free memory was 111.8MB in the beginning and 107.6MB 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: 945]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 945]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: 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, 37 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: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 252 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 591 IncrementalHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 20 mSDtfsCounter, 591 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=4, InterpolantAutomatonStates: 59, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2024-11-20 21:53:09,804 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