./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/sync01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/sync01.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 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:21:55,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:21:55,933 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:21:55,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:21:55,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:21:55,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:21:55,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:21:55,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:21:55,960 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:21:55,960 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:21:55,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:21:55,961 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:21:55,961 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:21:55,961 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:21:55,962 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:21:55,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:21:55,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:21:55,962 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:21:55,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:21:55,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:21:55,963 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:21:55,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:21:55,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:21:55,964 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:21:55,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:21:55,964 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:21:55,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:21:55,964 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:21:55,964 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:21:55,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:21:55,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:21:55,964 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 [2025-03-09 06:21:56,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:21:56,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:21:56,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:21:56,199 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:21:56,200 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:21:56,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/sync01.i [2025-03-09 06:21:57,376 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c0252f76/d4899a8f4f3a4713a8650540a3ffca7a/FLAGdfab33b41 [2025-03-09 06:21:57,649 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:21:57,649 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/sync01.i [2025-03-09 06:21:57,661 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c0252f76/d4899a8f4f3a4713a8650540a3ffca7a/FLAGdfab33b41 [2025-03-09 06:21:57,671 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c0252f76/d4899a8f4f3a4713a8650540a3ffca7a [2025-03-09 06:21:57,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:21:57,675 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:21:57,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:21:57,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:21:57,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:21:57,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:21:57" (1/1) ... [2025-03-09 06:21:57,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed21db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:57, skipping insertion in model container [2025-03-09 06:21:57,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:21:57" (1/1) ... [2025-03-09 06:21:57,711 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:21:57,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:21:57,964 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:21:58,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:21:58,046 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:21:58,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58 WrapperNode [2025-03-09 06:21:58,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:21:58,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:21:58,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:21:58,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:21:58,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,063 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,077 INFO L138 Inliner]: procedures = 268, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 254 [2025-03-09 06:21:58,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:21:58,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:21:58,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:21:58,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:21:58,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,088 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,097 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-03-09 06:21:58,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,103 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:21:58,112 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:21:58,112 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:21:58,112 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:21:58,113 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (1/1) ... [2025-03-09 06:21:58,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:21:58,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:58,148 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) [2025-03-09 06:21:58,151 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 [2025-03-09 06:21:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 06:21:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:21:58,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:21:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:21:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:21:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 06:21:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:21:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:21:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:21:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:21:58,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:21:58,170 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:21:58,298 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:21:58,301 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:21:58,594 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:21:58,594 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:21:59,235 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:21:59,236 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:21:59,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:21:59 BoogieIcfgContainer [2025-03-09 06:21:59,237 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:21:59,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:21:59,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:21:59,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:21:59,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:21:57" (1/3) ... [2025-03-09 06:21:59,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797d63cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:21:59, skipping insertion in model container [2025-03-09 06:21:59,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:58" (2/3) ... [2025-03-09 06:21:59,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797d63cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:21:59, skipping insertion in model container [2025-03-09 06:21:59,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:21:59" (3/3) ... [2025-03-09 06:21:59,246 INFO L128 eAbstractionObserver]: Analyzing ICFG sync01.i [2025-03-09 06:21:59,259 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:21:59,260 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sync01.i that has 3 procedures, 35 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2025-03-09 06:21:59,260 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:21:59,318 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 06:21:59,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 36 transitions, 86 flow [2025-03-09 06:21:59,385 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2025-03-09 06:21:59,387 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:21:59,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 2/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-03-09 06:21:59,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 36 transitions, 86 flow [2025-03-09 06:21:59,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 73 flow [2025-03-09 06:21:59,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:21:59,409 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;@60109a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:21:59,409 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-03-09 06:21:59,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:21:59,429 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2025-03-09 06:21:59,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:21:59,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:59,430 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:59,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-09 06:21:59,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1574284554, now seen corresponding path program 1 times [2025-03-09 06:21:59,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:59,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958190386] [2025-03-09 06:21:59,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:59,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:59,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:21:59,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:21:59,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:59,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:00,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:00,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958190386] [2025-03-09 06:22:00,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958190386] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:00,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:00,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:00,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803117256] [2025-03-09 06:22:00,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:00,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:00,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:00,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:00,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:00,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 36 [2025-03-09 06:22:00,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:00,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:00,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 36 [2025-03-09 06:22:00,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:00,142 INFO L124 PetriNetUnfolderBase]: 108/234 cut-off events. [2025-03-09 06:22:00,143 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-09 06:22:00,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 234 events. 108/234 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 890 event pairs, 46 based on Foata normal form. 14/227 useless extension candidates. Maximal degree in co-relation 419. Up to 124 conditions per place. [2025-03-09 06:22:00,146 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 16 selfloop transitions, 2 changer transitions 4/33 dead transitions. [2025-03-09 06:22:00,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 119 flow [2025-03-09 06:22:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:00,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2025-03-09 06:22:00,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-03-09 06:22:00,157 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 73 flow. Second operand 3 states and 63 transitions. [2025-03-09 06:22:00,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 119 flow [2025-03-09 06:22:00,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:00,162 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 61 flow [2025-03-09 06:22:00,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2025-03-09 06:22:00,169 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2025-03-09 06:22:00,170 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 61 flow [2025-03-09 06:22:00,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:00,170 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:00,170 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:00,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:22:00,170 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-09 06:22:00,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:00,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1846008031, now seen corresponding path program 1 times [2025-03-09 06:22:00,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:00,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900847668] [2025-03-09 06:22:00,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:00,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:22:00,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:22:00,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:00,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:00,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:00,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900847668] [2025-03-09 06:22:00,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900847668] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:00,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:00,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:00,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049807925] [2025-03-09 06:22:00,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:00,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:00,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:00,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:00,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:00,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2025-03-09 06:22:00,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 61 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) [2025-03-09 06:22:00,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:00,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2025-03-09 06:22:00,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:00,603 INFO L124 PetriNetUnfolderBase]: 85/187 cut-off events. [2025-03-09 06:22:00,604 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-09 06:22:00,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 187 events. 85/187 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 714 event pairs, 22 based on Foata normal form. 16/189 useless extension candidates. Maximal degree in co-relation 165. Up to 80 conditions per place. [2025-03-09 06:22:00,605 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 19 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2025-03-09 06:22:00,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 117 flow [2025-03-09 06:22:00,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:00,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:00,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2025-03-09 06:22:00,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2025-03-09 06:22:00,606 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 61 flow. Second operand 4 states and 68 transitions. [2025-03-09 06:22:00,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 117 flow [2025-03-09 06:22:00,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 113 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:00,607 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 59 flow [2025-03-09 06:22:00,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2025-03-09 06:22:00,608 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2025-03-09 06:22:00,608 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 59 flow [2025-03-09 06:22:00,608 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) [2025-03-09 06:22:00,608 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:00,608 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:00,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:22:00,608 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-09 06:22:00,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:00,609 INFO L85 PathProgramCache]: Analyzing trace with hash 820306505, now seen corresponding path program 1 times [2025-03-09 06:22:00,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:00,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444885416] [2025-03-09 06:22:00,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:00,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:00,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:22:00,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:22:00,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:00,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:00,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:00,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444885416] [2025-03-09 06:22:00,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444885416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:00,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:00,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:22:00,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846784774] [2025-03-09 06:22:00,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:00,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:22:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:00,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:22:00,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:22:00,944 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-03-09 06:22:00,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2025-03-09 06:22:00,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:00,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-03-09 06:22:00,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:01,042 INFO L124 PetriNetUnfolderBase]: 59/147 cut-off events. [2025-03-09 06:22:01,042 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-03-09 06:22:01,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 147 events. 59/147 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 474 event pairs, 15 based on Foata normal form. 12/153 useless extension candidates. Maximal degree in co-relation 174. Up to 75 conditions per place. [2025-03-09 06:22:01,043 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 17 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2025-03-09 06:22:01,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 123 flow [2025-03-09 06:22:01,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:01,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2025-03-09 06:22:01,045 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2025-03-09 06:22:01,045 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 59 flow. Second operand 4 states and 74 transitions. [2025-03-09 06:22:01,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 123 flow [2025-03-09 06:22:01,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 117 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:01,046 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 91 flow [2025-03-09 06:22:01,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2025-03-09 06:22:01,046 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2025-03-09 06:22:01,047 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 91 flow [2025-03-09 06:22:01,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2025-03-09 06:22:01,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:01,047 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:01,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:22:01,047 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-09 06:22:01,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:01,048 INFO L85 PathProgramCache]: Analyzing trace with hash 599719787, now seen corresponding path program 2 times [2025-03-09 06:22:01,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:01,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226634083] [2025-03-09 06:22:01,048 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:22:01,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:01,294 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:22:01,303 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:22:01,304 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:22:01,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:01,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:01,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226634083] [2025-03-09 06:22:01,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226634083] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:01,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:01,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:22:01,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472820171] [2025-03-09 06:22:01,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:01,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:22:01,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:01,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:22:01,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:22:01,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-03-09 06:22:01,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2025-03-09 06:22:01,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:01,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-03-09 06:22:01,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:01,538 INFO L124 PetriNetUnfolderBase]: 43/123 cut-off events. [2025-03-09 06:22:01,538 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2025-03-09 06:22:01,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 123 events. 43/123 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 363 event pairs, 3 based on Foata normal form. 4/121 useless extension candidates. Maximal degree in co-relation 162. Up to 34 conditions per place. [2025-03-09 06:22:01,541 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 15 selfloop transitions, 10 changer transitions 0/33 dead transitions. [2025-03-09 06:22:01,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 157 flow [2025-03-09 06:22:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:22:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:22:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2025-03-09 06:22:01,543 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2025-03-09 06:22:01,543 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 91 flow. Second operand 5 states and 87 transitions. [2025-03-09 06:22:01,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 157 flow [2025-03-09 06:22:01,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:01,544 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 109 flow [2025-03-09 06:22:01,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2025-03-09 06:22:01,544 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2025-03-09 06:22:01,544 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 109 flow [2025-03-09 06:22:01,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2025-03-09 06:22:01,545 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:01,545 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:01,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:22:01,545 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-09 06:22:01,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:01,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2097589142, now seen corresponding path program 1 times [2025-03-09 06:22:01,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:01,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652333032] [2025-03-09 06:22:01,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:01,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:01,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:22:01,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:22:01,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:01,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:01,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:01,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652333032] [2025-03-09 06:22:01,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652333032] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:01,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:01,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:22:01,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596455216] [2025-03-09 06:22:01,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:01,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:22:01,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:01,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:22:01,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:22:01,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2025-03-09 06:22:01,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2025-03-09 06:22:01,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:01,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2025-03-09 06:22:01,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:01,887 INFO L124 PetriNetUnfolderBase]: 49/125 cut-off events. [2025-03-09 06:22:01,887 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2025-03-09 06:22:01,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 125 events. 49/125 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 358 event pairs, 17 based on Foata normal form. 4/126 useless extension candidates. Maximal degree in co-relation 165. Up to 42 conditions per place. [2025-03-09 06:22:01,889 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 20 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2025-03-09 06:22:01,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 165 flow [2025-03-09 06:22:01,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:22:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:22:01,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2025-03-09 06:22:01,892 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33796296296296297 [2025-03-09 06:22:01,892 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 109 flow. Second operand 6 states and 73 transitions. [2025-03-09 06:22:01,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 165 flow [2025-03-09 06:22:01,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 135 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-09 06:22:01,894 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 85 flow [2025-03-09 06:22:01,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=85, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2025-03-09 06:22:01,894 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2025-03-09 06:22:01,894 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 85 flow [2025-03-09 06:22:01,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2025-03-09 06:22:01,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:01,894 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:01,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:22:01,895 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-09 06:22:01,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash 600754565, now seen corresponding path program 1 times [2025-03-09 06:22:01,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:01,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150070531] [2025-03-09 06:22:01,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:01,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:02,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:22:02,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:22:02,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:02,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:02,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:02,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150070531] [2025-03-09 06:22:02,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150070531] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:02,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:02,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:02,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93192230] [2025-03-09 06:22:02,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:02,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:02,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:02,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:02,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:02,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-03-09 06:22:02,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-03-09 06:22:02,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:02,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-03-09 06:22:02,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:02,169 INFO L124 PetriNetUnfolderBase]: 41/110 cut-off events. [2025-03-09 06:22:02,169 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2025-03-09 06:22:02,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 110 events. 41/110 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 332 event pairs, 23 based on Foata normal form. 4/104 useless extension candidates. Maximal degree in co-relation 118. Up to 78 conditions per place. [2025-03-09 06:22:02,169 INFO L140 encePairwiseOnDemand]: 34/36 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2025-03-09 06:22:02,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 125 flow [2025-03-09 06:22:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:02,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2025-03-09 06:22:02,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2025-03-09 06:22:02,170 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 85 flow. Second operand 3 states and 53 transitions. [2025-03-09 06:22:02,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 125 flow [2025-03-09 06:22:02,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 116 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-09 06:22:02,171 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2025-03-09 06:22:02,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2025-03-09 06:22:02,173 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2025-03-09 06:22:02,173 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2025-03-09 06:22:02,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-03-09 06:22:02,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2025-03-09 06:22:02,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2025-03-09 06:22:02,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-03-09 06:22:02,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-03-09 06:22:02,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2025-03-09 06:22:02,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2025-03-09 06:22:02,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-03-09 06:22:02,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-03-09 06:22:02,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-03-09 06:22:02,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2025-03-09 06:22:02,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:22:02,176 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2025-03-09 06:22:02,179 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 06:22:02,179 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 06:22:02,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 06:22:02 BasicIcfg [2025-03-09 06:22:02,184 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 06:22:02,185 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:22:02,185 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:22:02,185 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:22:02,185 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:21:59" (3/4) ... [2025-03-09 06:22:02,186 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 06:22:02,188 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-09 06:22:02,188 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-09 06:22:02,195 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 140 nodes and edges [2025-03-09 06:22:02,195 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 68 nodes and edges [2025-03-09 06:22:02,196 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2025-03-09 06:22:02,196 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2025-03-09 06:22:02,196 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-09 06:22:02,197 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-09 06:22:02,197 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-09 06:22:02,197 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 06:22:02,255 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 06:22:02,255 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 06:22:02,255 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:22:02,256 INFO L158 Benchmark]: Toolchain (without parser) took 4581.04ms. Allocated memory was 142.6MB in the beginning and 587.2MB in the end (delta: 444.6MB). Free memory was 105.3MB in the beginning and 476.0MB in the end (delta: -370.7MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. [2025-03-09 06:22:02,256 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:22:02,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.26ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 75.9MB in the end (delta: 29.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-09 06:22:02,258 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.88ms. Allocated memory is still 142.6MB. Free memory was 75.9MB in the beginning and 72.8MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:22:02,259 INFO L158 Benchmark]: Boogie Preprocessor took 33.87ms. Allocated memory is still 142.6MB. Free memory was 72.8MB in the beginning and 69.7MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:22:02,259 INFO L158 Benchmark]: IcfgBuilder took 1124.89ms. Allocated memory was 142.6MB in the beginning and 343.9MB in the end (delta: 201.3MB). Free memory was 69.7MB in the beginning and 204.1MB in the end (delta: -134.4MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. [2025-03-09 06:22:02,260 INFO L158 Benchmark]: TraceAbstraction took 2944.68ms. Allocated memory was 343.9MB in the beginning and 587.2MB in the end (delta: 243.3MB). Free memory was 203.1MB in the beginning and 484.4MB in the end (delta: -281.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:22:02,261 INFO L158 Benchmark]: Witness Printer took 70.81ms. Allocated memory is still 587.2MB. Free memory was 484.4MB in the beginning and 476.0MB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:22:02,262 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 371.26ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 75.9MB in the end (delta: 29.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.88ms. Allocated memory is still 142.6MB. Free memory was 75.9MB in the beginning and 72.8MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.87ms. Allocated memory is still 142.6MB. Free memory was 72.8MB in the beginning and 69.7MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 1124.89ms. Allocated memory was 142.6MB in the beginning and 343.9MB in the end (delta: 201.3MB). Free memory was 69.7MB in the beginning and 204.1MB in the end (delta: -134.4MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2944.68ms. Allocated memory was 343.9MB in the beginning and 587.2MB in the end (delta: 243.3MB). Free memory was 203.1MB in the beginning and 484.4MB in the end (delta: -281.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 70.81ms. Allocated memory is still 587.2MB. Free memory was 484.4MB in the beginning and 476.0MB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 938]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 938]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 948]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 948]: 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 5 procedures, 63 locations, 66 edges, 10 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: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 113 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 309 IncrementalHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 2 mSDtfsCounter, 309 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=4, InterpolantAutomatonStates: 25, 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, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 06:22:02,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE