./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 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/pthread/lazy01.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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:42:57,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:42:57,948 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:42:57,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:42:57,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:42:57,994 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:42:57,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:42:57,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:42:57,995 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:42:57,997 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:42:57,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:42:57,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:42:57,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:42:57,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:42:58,000 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:42:58,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:42:58,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:42:58,001 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:42:58,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:42:58,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:42:58,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:42:58,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:42:58,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:42:58,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:42:58,004 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:42:58,004 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:42:58,005 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:42:58,005 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:42:58,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:42:58,006 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:42:58,006 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:42:58,006 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:42:58,006 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:42:58,007 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:42:58,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:42:58,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:42:58,008 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:42:58,008 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:42:58,008 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:42:58,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:42:58,009 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:42:58,009 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:42:58,009 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:42:58,010 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:42:58,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2024-10-14 23:42:58,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:42:58,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:42:58,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:42:58,306 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:42:58,307 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:42:58,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2024-10-14 23:42:59,743 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:43:00,015 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:43:00,015 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2024-10-14 23:43:00,034 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ac84d5a8/78b2039b15dc45f5a2e8e386c5e845bd/FLAG5cff0901b [2024-10-14 23:43:00,047 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ac84d5a8/78b2039b15dc45f5a2e8e386c5e845bd [2024-10-14 23:43:00,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:43:00,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:43:00,052 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:43:00,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:43:00,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:43:00,059 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46346b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00, skipping insertion in model container [2024-10-14 23:43:00,060 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:43:00,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:43:00,450 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:43:00,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:43:00,535 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:43:00,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00 WrapperNode [2024-10-14 23:43:00,536 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:43:00,537 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:43:00,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:43:00,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:43:00,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,560 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,586 INFO L138 Inliner]: procedures = 169, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-10-14 23:43:00,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:43:00,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:43:00,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:43:00,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:43:00,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,612 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]. [2024-10-14 23:43:00,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:43:00,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:43:00,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:43:00,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:43:00,633 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (1/1) ... [2024-10-14 23:43:00,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:43:00,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:00,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:43:00,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:43:00,725 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 23:43:00,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 23:43:00,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 23:43:00,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 23:43:00,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 23:43:00,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 23:43:00,726 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 23:43:00,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:43:00,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:43:00,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:43:00,727 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 23:43:00,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:43:00,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:43:00,729 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:43:00,840 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:43:00,841 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:43:00,991 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:43:00,991 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:43:01,071 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:43:01,071 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 23:43:01,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:01 BoogieIcfgContainer [2024-10-14 23:43:01,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:43:01,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:43:01,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:43:01,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:43:01,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:43:00" (1/3) ... [2024-10-14 23:43:01,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e931d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:01, skipping insertion in model container [2024-10-14 23:43:01,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:00" (2/3) ... [2024-10-14 23:43:01,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e931d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:01, skipping insertion in model container [2024-10-14 23:43:01,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:01" (3/3) ... [2024-10-14 23:43:01,081 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-10-14 23:43:01,099 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:43:01,100 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-14 23:43:01,100 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:43:01,162 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 23:43:01,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 37 transitions, 95 flow [2024-10-14 23:43:01,237 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2024-10-14 23:43:01,238 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 23:43:01,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 0/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-14 23:43:01,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 37 transitions, 95 flow [2024-10-14 23:43:01,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 74 flow [2024-10-14 23:43:01,266 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:43:01,281 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;@3c6cdf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:43:01,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-14 23:43:01,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:43:01,298 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-10-14 23:43:01,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:43:01,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:01,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:43:01,321 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:43:01,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:01,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1726417853, now seen corresponding path program 1 times [2024-10-14 23:43:01,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:01,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269180881] [2024-10-14 23:43:01,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:01,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:01,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:01,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269180881] [2024-10-14 23:43:01,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269180881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:01,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:01,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:43:01,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939142905] [2024-10-14 23:43:01,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:01,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:01,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:01,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:01,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:01,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 23:43:01,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:01,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:01,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 23:43:01,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:02,163 INFO L124 PetriNetUnfolderBase]: 1092/1753 cut-off events. [2024-10-14 23:43:02,163 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-10-14 23:43:02,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3577 conditions, 1753 events. 1092/1753 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9078 event pairs, 280 based on Foata normal form. 96/1761 useless extension candidates. Maximal degree in co-relation 3345. Up to 1414 conditions per place. [2024-10-14 23:43:02,184 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 43 selfloop transitions, 4 changer transitions 13/66 dead transitions. [2024-10-14 23:43:02,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 279 flow [2024-10-14 23:43:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:43:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:43:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-10-14 23:43:02,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6108108108108108 [2024-10-14 23:43:02,199 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 74 flow. Second operand 5 states and 113 transitions. [2024-10-14 23:43:02,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 279 flow [2024-10-14 23:43:02,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 23:43:02,210 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 101 flow [2024-10-14 23:43:02,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-10-14 23:43:02,217 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-10-14 23:43:02,218 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 101 flow [2024-10-14 23:43:02,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:02,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:02,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:02,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:43:02,220 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:43:02,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1046644942, now seen corresponding path program 1 times [2024-10-14 23:43:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:02,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314608404] [2024-10-14 23:43:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:02,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:02,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:02,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314608404] [2024-10-14 23:43:02,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314608404] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:02,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:02,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:02,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018010910] [2024-10-14 23:43:02,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:02,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:43:02,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:02,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:43:02,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:43:02,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-10-14 23:43:02,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 101 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) [2024-10-14 23:43:02,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:02,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-10-14 23:43:02,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:02,485 INFO L124 PetriNetUnfolderBase]: 175/500 cut-off events. [2024-10-14 23:43:02,485 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-10-14 23:43:02,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1108 conditions, 500 events. 175/500 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2770 event pairs, 44 based on Foata normal form. 89/584 useless extension candidates. Maximal degree in co-relation 1006. Up to 250 conditions per place. [2024-10-14 23:43:02,489 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 25 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-10-14 23:43:02,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 186 flow [2024-10-14 23:43:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:43:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:43:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-10-14 23:43:02,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-10-14 23:43:02,491 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 101 flow. Second operand 3 states and 72 transitions. [2024-10-14 23:43:02,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 186 flow [2024-10-14 23:43:02,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 175 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-14 23:43:02,499 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 102 flow [2024-10-14 23:43:02,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-10-14 23:43:02,500 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-10-14 23:43:02,500 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 102 flow [2024-10-14 23:43:02,501 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) [2024-10-14 23:43:02,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:02,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:02,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:43:02,502 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:43:02,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:02,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1902330088, now seen corresponding path program 1 times [2024-10-14 23:43:02,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:02,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939268170] [2024-10-14 23:43:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:02,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:02,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:02,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939268170] [2024-10-14 23:43:02,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939268170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:02,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:02,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:02,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616665351] [2024-10-14 23:43:02,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:02,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:43:02,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:02,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:43:02,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:43:02,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 23:43:02,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:02,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:02,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 23:43:02,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:02,824 INFO L124 PetriNetUnfolderBase]: 245/535 cut-off events. [2024-10-14 23:43:02,824 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-10-14 23:43:02,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 535 events. 245/535 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2523 event pairs, 84 based on Foata normal form. 19/545 useless extension candidates. Maximal degree in co-relation 904. Up to 393 conditions per place. [2024-10-14 23:43:02,830 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 38 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2024-10-14 23:43:02,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 232 flow [2024-10-14 23:43:02,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:43:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:43:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-10-14 23:43:02,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-10-14 23:43:02,834 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 102 flow. Second operand 5 states and 88 transitions. [2024-10-14 23:43:02,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 232 flow [2024-10-14 23:43:02,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:43:02,838 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 100 flow [2024-10-14 23:43:02,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2024-10-14 23:43:02,839 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-10-14 23:43:02,839 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 100 flow [2024-10-14 23:43:02,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:02,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:02,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:02,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:43:02,841 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:43:02,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:02,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1246896248, now seen corresponding path program 1 times [2024-10-14 23:43:02,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:02,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137278143] [2024-10-14 23:43:02,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:02,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:02,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:02,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137278143] [2024-10-14 23:43:02,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137278143] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:02,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:02,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:02,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900833747] [2024-10-14 23:43:02,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:02,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:43:02,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:02,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:43:02,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:43:02,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 23:43:02,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:02,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:02,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 23:43:02,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:03,128 INFO L124 PetriNetUnfolderBase]: 223/493 cut-off events. [2024-10-14 23:43:03,129 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-10-14 23:43:03,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 493 events. 223/493 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2286 event pairs, 58 based on Foata normal form. 16/499 useless extension candidates. Maximal degree in co-relation 774. Up to 148 conditions per place. [2024-10-14 23:43:03,133 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 44 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-10-14 23:43:03,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 259 flow [2024-10-14 23:43:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:43:03,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:43:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-10-14 23:43:03,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-10-14 23:43:03,136 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 100 flow. Second operand 5 states and 95 transitions. [2024-10-14 23:43:03,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 259 flow [2024-10-14 23:43:03,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 253 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:43:03,139 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 100 flow [2024-10-14 23:43:03,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2024-10-14 23:43:03,140 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-10-14 23:43:03,140 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 100 flow [2024-10-14 23:43:03,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:03,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:03,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:03,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:43:03,141 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:43:03,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1290868572, now seen corresponding path program 1 times [2024-10-14 23:43:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:03,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090995001] [2024-10-14 23:43:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:03,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:03,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:03,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090995001] [2024-10-14 23:43:03,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090995001] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:03,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:03,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:03,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583958903] [2024-10-14 23:43:03,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:03,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:43:03,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:43:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:43:03,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 23:43:03,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:03,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:03,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 23:43:03,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:03,333 INFO L124 PetriNetUnfolderBase]: 197/452 cut-off events. [2024-10-14 23:43:03,334 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-10-14 23:43:03,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 452 events. 197/452 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2107 event pairs, 65 based on Foata normal form. 16/462 useless extension candidates. Maximal degree in co-relation 740. Up to 180 conditions per place. [2024-10-14 23:43:03,336 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 23 selfloop transitions, 2 changer transitions 22/53 dead transitions. [2024-10-14 23:43:03,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 252 flow [2024-10-14 23:43:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:43:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:43:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-10-14 23:43:03,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-10-14 23:43:03,338 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 100 flow. Second operand 5 states and 93 transitions. [2024-10-14 23:43:03,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 252 flow [2024-10-14 23:43:03,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 242 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-14 23:43:03,340 INFO L231 Difference]: Finished difference. Result has 45 places, 24 transitions, 70 flow [2024-10-14 23:43:03,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=5, PETRI_FLOW=70, PETRI_PLACES=45, PETRI_TRANSITIONS=24} [2024-10-14 23:43:03,341 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-10-14 23:43:03,341 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 24 transitions, 70 flow [2024-10-14 23:43:03,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:03,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:03,342 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:03,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:43:03,342 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-14 23:43:03,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:03,343 INFO L85 PathProgramCache]: Analyzing trace with hash -921733, now seen corresponding path program 1 times [2024-10-14 23:43:03,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:03,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301245959] [2024-10-14 23:43:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:03,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:03,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:03,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301245959] [2024-10-14 23:43:03,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301245959] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:03,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:03,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167641602] [2024-10-14 23:43:03,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:03,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:43:03,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:43:03,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:43:03,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-10-14 23:43:03,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 24 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:03,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:03,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-10-14 23:43:03,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:03,503 INFO L124 PetriNetUnfolderBase]: 97/222 cut-off events. [2024-10-14 23:43:03,503 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-10-14 23:43:03,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 222 events. 97/222 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 783 event pairs, 32 based on Foata normal form. 16/232 useless extension candidates. Maximal degree in co-relation 497. Up to 103 conditions per place. [2024-10-14 23:43:03,504 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2024-10-14 23:43:03,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 159 flow [2024-10-14 23:43:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:43:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:43:03,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-10-14 23:43:03,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-10-14 23:43:03,505 INFO L175 Difference]: Start difference. First operand has 45 places, 24 transitions, 70 flow. Second operand 5 states and 76 transitions. [2024-10-14 23:43:03,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 159 flow [2024-10-14 23:43:03,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 153 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:43:03,507 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-10-14 23:43:03,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-10-14 23:43:03,507 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2024-10-14 23:43:03,508 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-10-14 23:43:03,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:03,510 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2024-10-14 23:43:03,511 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-10-14 23:43:03,511 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-10-14 23:43:03,511 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-10-14 23:43:03,511 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 11 remaining) [2024-10-14 23:43:03,512 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2024-10-14 23:43:03,512 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2024-10-14 23:43:03,512 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-10-14 23:43:03,512 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-10-14 23:43:03,512 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-10-14 23:43:03,513 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-10-14 23:43:03,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 23:43:03,513 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-14 23:43:03,519 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 23:43:03,519 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 23:43:03,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:43:03 BasicIcfg [2024-10-14 23:43:03,527 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 23:43:03,527 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 23:43:03,527 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 23:43:03,528 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 23:43:03,528 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:01" (3/4) ... [2024-10-14 23:43:03,530 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 23:43:03,532 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-14 23:43:03,532 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-14 23:43:03,532 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-14 23:43:03,538 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2024-10-14 23:43:03,538 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-14 23:43:03,538 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-14 23:43:03,538 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 23:43:03,627 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 23:43:03,629 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 23:43:03,629 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 23:43:03,629 INFO L158 Benchmark]: Toolchain (without parser) took 3578.92ms. Allocated memory was 146.8MB in the beginning and 192.9MB in the end (delta: 46.1MB). Free memory was 113.5MB in the beginning and 137.9MB in the end (delta: -24.4MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2024-10-14 23:43:03,630 INFO L158 Benchmark]: CDTParser took 0.97ms. Allocated memory is still 117.4MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 23:43:03,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 484.29ms. Allocated memory is still 146.8MB. Free memory was 113.1MB in the beginning and 92.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-14 23:43:03,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.68ms. Allocated memory is still 146.8MB. Free memory was 92.2MB in the beginning and 90.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 23:43:03,630 INFO L158 Benchmark]: Boogie Preprocessor took 43.96ms. Allocated memory is still 146.8MB. Free memory was 90.1MB in the beginning and 88.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 23:43:03,631 INFO L158 Benchmark]: RCFGBuilder took 439.21ms. Allocated memory is still 146.8MB. Free memory was 88.0MB in the beginning and 65.4MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-14 23:43:03,631 INFO L158 Benchmark]: TraceAbstraction took 2452.33ms. Allocated memory was 146.8MB in the beginning and 192.9MB in the end (delta: 46.1MB). Free memory was 64.9MB in the beginning and 142.1MB in the end (delta: -77.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 23:43:03,631 INFO L158 Benchmark]: Witness Printer took 101.61ms. Allocated memory is still 192.9MB. Free memory was 142.1MB in the beginning and 137.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 23:43:03,636 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97ms. Allocated memory is still 117.4MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 484.29ms. Allocated memory is still 146.8MB. Free memory was 113.1MB in the beginning and 92.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.68ms. Allocated memory is still 146.8MB. Free memory was 92.2MB in the beginning and 90.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.96ms. Allocated memory is still 146.8MB. Free memory was 90.1MB in the beginning and 88.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 439.21ms. Allocated memory is still 146.8MB. Free memory was 88.0MB in the beginning and 65.4MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2452.33ms. Allocated memory was 146.8MB in the beginning and 192.9MB in the end (delta: 46.1MB). Free memory was 64.9MB in the beginning and 142.1MB in the end (delta: -77.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 101.61ms. Allocated memory is still 192.9MB. Free memory was 142.1MB in the beginning and 137.9MB 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: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: 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 7 procedures, 67 locations, 11 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: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 229 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 571 IncrementalHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 21 mSDtfsCounter, 571 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=2, InterpolantAutomatonStates: 28, 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, 0.6s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-14 23:43:03,667 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