./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:58:37,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:58:37,910 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:58:37,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:58:37,917 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:58:37,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:58:37,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:58:37,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:58:37,948 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:58:37,948 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:58:37,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:58:37,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:58:37,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:58:37,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:58:37,950 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:58:37,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:58:37,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:58:37,951 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:58:37,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:58:37,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:58:37,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:58:37,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:58:37,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:58:37,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:58:37,954 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:58:37,954 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:58:37,954 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:58:37,955 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:58:37,955 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:58:37,955 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:58:37,956 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:58:37,956 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:58:37,956 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:58:37,957 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:58:37,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:58:37,957 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:58:37,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:58:37,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:58:37,958 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:58:37,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:58:37,959 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:58:37,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:58:37,960 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:58:37,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:58:37,960 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-23 01:58:38,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:58:38,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:58:38,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:58:38,267 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:58:38,268 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:58:38,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-23 01:58:39,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:58:39,926 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:58:39,927 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-23 01:58:39,935 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bec186910/5f0f7e4feb964add95e161619f74a31c/FLAGb2849e6da [2024-11-23 01:58:39,951 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bec186910/5f0f7e4feb964add95e161619f74a31c [2024-11-23 01:58:39,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:58:39,955 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:58:39,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:58:39,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:58:39,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:58:39,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:39" (1/1) ... [2024-11-23 01:58:39,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8ff4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:39, skipping insertion in model container [2024-11-23 01:58:39,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:39" (1/1) ... [2024-11-23 01:58:39,990 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:58:40,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:58:40,267 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:58:40,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:58:40,313 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:58:40,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40 WrapperNode [2024-11-23 01:58:40,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:58:40,315 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:58:40,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:58:40,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:58:40,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,331 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,356 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2024-11-23 01:58:40,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:58:40,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:58:40,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:58:40,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:58:40,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,371 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,386 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 01:58:40,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:58:40,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:58:40,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:58:40,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:58:40,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (1/1) ... [2024-11-23 01:58:40,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:58:40,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:58:40,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:58:40,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:58:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:58:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 01:58:40,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 01:58:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 01:58:40,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 01:58:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 01:58:40,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 01:58:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-23 01:58:40,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-23 01:58:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:58:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:58:40,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:58:40,503 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:58:40,611 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:58:40,613 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:58:40,824 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:58:40,825 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:58:40,975 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:58:40,975 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 01:58:40,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:40 BoogieIcfgContainer [2024-11-23 01:58:40,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:58:40,978 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:58:40,978 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:58:40,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:58:40,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:58:39" (1/3) ... [2024-11-23 01:58:40,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e049fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:40, skipping insertion in model container [2024-11-23 01:58:40,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:40" (2/3) ... [2024-11-23 01:58:40,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e049fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:40, skipping insertion in model container [2024-11-23 01:58:40,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:40" (3/3) ... [2024-11-23 01:58:40,985 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-23 01:58:41,001 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:58:41,003 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-23 01:58:41,003 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:58:41,092 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-23 01:58:41,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-11-23 01:58:41,196 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-23 01:58:41,196 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-23 01:58:41,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 162 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-11-23 01:58:41,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-11-23 01:58:41,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 133 flow [2024-11-23 01:58:41,221 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:58:41,232 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;@11bd3d3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:58:41,232 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-23 01:58:41,236 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:58:41,237 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-23 01:58:41,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:58:41,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:41,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:58:41,238 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 01:58:41,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash 372811546, now seen corresponding path program 1 times [2024-11-23 01:58:41,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:41,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072285185] [2024-11-23 01:58:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:41,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:41,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:41,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072285185] [2024-11-23 01:58:41,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072285185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:41,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:41,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:58:41,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992113467] [2024-11-23 01:58:41,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:41,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:58:41,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:41,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:58:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:58:41,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-23 01:58:41,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:41,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:41,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-23 01:58:41,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:45,044 INFO L124 PetriNetUnfolderBase]: 28409/41660 cut-off events. [2024-11-23 01:58:45,044 INFO L125 PetriNetUnfolderBase]: For 1912/1912 co-relation queries the response was YES. [2024-11-23 01:58:45,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80294 conditions, 41660 events. 28409/41660 cut-off events. For 1912/1912 co-relation queries the response was YES. Maximal size of possible extension queue 2159. Compared 304812 event pairs, 13092 based on Foata normal form. 0/30295 useless extension candidates. Maximal degree in co-relation 74609. Up to 20574 conditions per place. [2024-11-23 01:58:45,390 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 70 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2024-11-23 01:58:45,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 360 flow [2024-11-23 01:58:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:58:45,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:58:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-23 01:58:45,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2024-11-23 01:58:45,407 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 133 flow. Second operand 3 states and 130 transitions. [2024-11-23 01:58:45,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 360 flow [2024-11-23 01:58:45,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 338 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-23 01:58:45,486 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 144 flow [2024-11-23 01:58:45,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-23 01:58:45,495 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2024-11-23 01:58:45,495 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 144 flow [2024-11-23 01:58:45,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:45,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:45,496 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 01:58:45,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:58:45,496 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 01:58:45,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:45,497 INFO L85 PathProgramCache]: Analyzing trace with hash 372811547, now seen corresponding path program 1 times [2024-11-23 01:58:45,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:45,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584355626] [2024-11-23 01:58:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:45,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:45,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:45,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584355626] [2024-11-23 01:58:45,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584355626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:45,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:45,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:58:45,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209037547] [2024-11-23 01:58:45,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:45,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:58:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:45,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:58:45,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:58:45,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-23 01:58:45,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:45,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:45,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-23 01:58:45,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:48,114 INFO L124 PetriNetUnfolderBase]: 27849/40731 cut-off events. [2024-11-23 01:58:48,115 INFO L125 PetriNetUnfolderBase]: For 5620/5620 co-relation queries the response was YES. [2024-11-23 01:58:48,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83714 conditions, 40731 events. 27849/40731 cut-off events. For 5620/5620 co-relation queries the response was YES. Maximal size of possible extension queue 1673. Compared 290653 event pairs, 7534 based on Foata normal form. 953/35067 useless extension candidates. Maximal degree in co-relation 44616. Up to 29137 conditions per place. [2024-11-23 01:58:48,371 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-23 01:58:48,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 361 flow [2024-11-23 01:58:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:58:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:58:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-11-23 01:58:48,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6881720430107527 [2024-11-23 01:58:48,374 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 144 flow. Second operand 3 states and 128 transitions. [2024-11-23 01:58:48,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 361 flow [2024-11-23 01:58:48,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:58:48,445 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 155 flow [2024-11-23 01:58:48,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-23 01:58:48,446 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2024-11-23 01:58:48,446 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 155 flow [2024-11-23 01:58:48,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:48,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:48,446 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:48,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:58:48,447 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 01:58:48,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:48,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1789624957, now seen corresponding path program 1 times [2024-11-23 01:58:48,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:48,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047803108] [2024-11-23 01:58:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:48,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:48,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:48,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047803108] [2024-11-23 01:58:48,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047803108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:48,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:48,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:58:48,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481448432] [2024-11-23 01:58:48,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:48,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:58:48,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:58:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:58:48,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-23 01:58:48,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:48,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:48,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-23 01:58:48,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:52,007 INFO L124 PetriNetUnfolderBase]: 43625/63827 cut-off events. [2024-11-23 01:58:52,007 INFO L125 PetriNetUnfolderBase]: For 15222/15222 co-relation queries the response was YES. [2024-11-23 01:58:52,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132875 conditions, 63827 events. 43625/63827 cut-off events. For 15222/15222 co-relation queries the response was YES. Maximal size of possible extension queue 2639. Compared 474017 event pairs, 25311 based on Foata normal form. 1154/53896 useless extension candidates. Maximal degree in co-relation 60807. Up to 45801 conditions per place. [2024-11-23 01:58:52,385 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 105 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-11-23 01:58:52,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 121 transitions, 527 flow [2024-11-23 01:58:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:58:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:58:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-23 01:58:52,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6895161290322581 [2024-11-23 01:58:52,393 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 155 flow. Second operand 4 states and 171 transitions. [2024-11-23 01:58:52,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 121 transitions, 527 flow [2024-11-23 01:58:52,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 121 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:58:52,413 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 181 flow [2024-11-23 01:58:52,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-11-23 01:58:52,414 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2024-11-23 01:58:52,415 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 181 flow [2024-11-23 01:58:52,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:52,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:52,415 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:52,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:58:52,416 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 01:58:52,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:52,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2120641924, now seen corresponding path program 1 times [2024-11-23 01:58:52,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:52,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945610987] [2024-11-23 01:58:52,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:52,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:52,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945610987] [2024-11-23 01:58:52,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945610987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:52,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:52,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:58:52,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28068900] [2024-11-23 01:58:52,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:52,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:58:52,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:52,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:58:52,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:58:52,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-23 01:58:52,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:52,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:52,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-23 01:58:52,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:55,535 INFO L124 PetriNetUnfolderBase]: 38050/57073 cut-off events. [2024-11-23 01:58:55,536 INFO L125 PetriNetUnfolderBase]: For 23257/24049 co-relation queries the response was YES. [2024-11-23 01:58:55,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129175 conditions, 57073 events. 38050/57073 cut-off events. For 23257/24049 co-relation queries the response was YES. Maximal size of possible extension queue 2306. Compared 429994 event pairs, 18817 based on Foata normal form. 0/49189 useless extension candidates. Maximal degree in co-relation 69413. Up to 29564 conditions per place. [2024-11-23 01:58:55,877 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 76 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-11-23 01:58:55,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 453 flow [2024-11-23 01:58:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:58:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:58:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-23 01:58:55,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-23 01:58:55,879 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 181 flow. Second operand 3 states and 124 transitions. [2024-11-23 01:58:55,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 453 flow [2024-11-23 01:58:55,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:58:55,927 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 202 flow [2024-11-23 01:58:55,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-11-23 01:58:55,928 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2024-11-23 01:58:55,929 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 202 flow [2024-11-23 01:58:55,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:55,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:55,929 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:55,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:58:55,930 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 01:58:55,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:55,930 INFO L85 PathProgramCache]: Analyzing trace with hash -2120641923, now seen corresponding path program 1 times [2024-11-23 01:58:55,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:55,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772663335] [2024-11-23 01:58:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:55,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:55,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:55,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772663335] [2024-11-23 01:58:55,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772663335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:55,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:55,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:58:55,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48411790] [2024-11-23 01:58:55,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:55,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:58:55,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:58:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:58:55,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-23 01:58:55,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:55,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:55,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-23 01:58:55,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:59,125 INFO L124 PetriNetUnfolderBase]: 37476/56022 cut-off events. [2024-11-23 01:58:59,126 INFO L125 PetriNetUnfolderBase]: For 29239/31111 co-relation queries the response was YES. [2024-11-23 01:58:59,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132663 conditions, 56022 events. 37476/56022 cut-off events. For 29239/31111 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 408807 event pairs, 10252 based on Foata normal form. 1332/55548 useless extension candidates. Maximal degree in co-relation 77728. Up to 38504 conditions per place. [2024-11-23 01:58:59,455 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 76 selfloop transitions, 3 changer transitions 1/94 dead transitions. [2024-11-23 01:58:59,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 471 flow [2024-11-23 01:58:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:58:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:58:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-11-23 01:58:59,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2024-11-23 01:58:59,457 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 202 flow. Second operand 3 states and 122 transitions. [2024-11-23 01:58:59,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 471 flow [2024-11-23 01:58:59,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 463 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:58:59,586 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 213 flow [2024-11-23 01:58:59,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-23 01:58:59,587 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2024-11-23 01:58:59,587 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 213 flow [2024-11-23 01:58:59,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:59,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:59,588 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:59,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:58:59,588 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 01:58:59,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:59,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1580166084, now seen corresponding path program 1 times [2024-11-23 01:58:59,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:59,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998928711] [2024-11-23 01:58:59,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:59,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:59,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:59,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998928711] [2024-11-23 01:58:59,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998928711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:59,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:59,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:58:59,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166391239] [2024-11-23 01:58:59,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:59,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:58:59,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:59,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:58:59,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:58:59,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-23 01:58:59,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:59,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:59,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-23 01:58:59,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:04,963 INFO L124 PetriNetUnfolderBase]: 58559/86886 cut-off events. [2024-11-23 01:59:04,963 INFO L125 PetriNetUnfolderBase]: For 54714/57060 co-relation queries the response was YES. [2024-11-23 01:59:05,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213248 conditions, 86886 events. 58559/86886 cut-off events. For 54714/57060 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 656102 event pairs, 15866 based on Foata normal form. 3434/88633 useless extension candidates. Maximal degree in co-relation 81850. Up to 31457 conditions per place. [2024-11-23 01:59:05,517 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 119 selfloop transitions, 7 changer transitions 0/140 dead transitions. [2024-11-23 01:59:05,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 140 transitions, 725 flow [2024-11-23 01:59:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:59:05,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:59:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-11-23 01:59:05,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2024-11-23 01:59:05,524 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 213 flow. Second operand 4 states and 184 transitions. [2024-11-23 01:59:05,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 140 transitions, 725 flow [2024-11-23 01:59:05,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 140 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:59:05,584 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 275 flow [2024-11-23 01:59:05,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-23 01:59:05,586 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2024-11-23 01:59:05,586 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 275 flow [2024-11-23 01:59:05,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:05,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:05,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:59:05,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:59:05,587 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 01:59:05,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:05,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2122375137, now seen corresponding path program 1 times [2024-11-23 01:59:05,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:05,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963576728] [2024-11-23 01:59:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:05,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:05,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:05,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963576728] [2024-11-23 01:59:05,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963576728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:59:05,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:59:05,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:59:05,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471453223] [2024-11-23 01:59:05,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:59:05,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:59:05,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:05,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:59:05,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:59:05,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-23 01:59:05,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:05,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:05,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-23 01:59:05,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:14,692 INFO L124 PetriNetUnfolderBase]: 93759/136685 cut-off events. [2024-11-23 01:59:14,693 INFO L125 PetriNetUnfolderBase]: For 128663/134365 co-relation queries the response was YES. [2024-11-23 01:59:15,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351474 conditions, 136685 events. 93759/136685 cut-off events. For 128663/134365 co-relation queries the response was YES. Maximal size of possible extension queue 3684. Compared 1059415 event pairs, 53447 based on Foata normal form. 2630/134874 useless extension candidates. Maximal degree in co-relation 169816. Up to 97029 conditions per place. [2024-11-23 01:59:15,582 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 131 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2024-11-23 01:59:15,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 147 transitions, 915 flow [2024-11-23 01:59:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:59:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:59:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-23 01:59:15,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-23 01:59:15,584 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 275 flow. Second operand 4 states and 164 transitions. [2024-11-23 01:59:15,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 147 transitions, 915 flow [2024-11-23 01:59:15,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 147 transitions, 915 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:59:15,760 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 304 flow [2024-11-23 01:59:15,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-11-23 01:59:15,761 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2024-11-23 01:59:15,761 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 304 flow [2024-11-23 01:59:15,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:15,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:15,762 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:59:15,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:59:15,762 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 01:59:15,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:15,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1878830270, now seen corresponding path program 1 times [2024-11-23 01:59:15,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:15,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486338501] [2024-11-23 01:59:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:15,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:15,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:15,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486338501] [2024-11-23 01:59:15,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486338501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:59:15,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:59:15,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:59:15,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223580911] [2024-11-23 01:59:15,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:59:15,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:59:15,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:15,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:59:15,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:59:15,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-23 01:59:15,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:15,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:15,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-23 01:59:15,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand