./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 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/weaver/popl20-difference-det.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 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:41:49,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:41:49,235 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:41:49,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:41:49,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:41:49,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:41:49,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:41:49,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:41:49,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:41:49,255 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:41:49,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:41:49,255 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:41:49,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:41:49,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:41:49,256 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:41:49,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:41:49,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:41:49,257 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:41:49,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:41:49,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:41:49,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:41:49,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:41:49,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:41:49,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:41:49,259 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:41:49,259 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:41:49,259 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:41:49,259 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:41:49,259 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:41:49,260 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:41:49,260 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:41:49,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:41:49,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:41:49,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:41:49,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:41:49,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:41:49,261 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:41:49,261 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:41:49,261 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:41:49,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:41:49,262 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:41:49,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:41:49,262 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:41:49,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:41:49,263 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 [2024-10-24 23:41:49,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:41:49,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:41:49,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:41:49,502 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:41:49,503 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:41:49,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-24 23:41:50,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:41:50,962 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:41:50,962 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-10-24 23:41:50,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/462cc2785/e6dfd91ee6ee420682b35e0898adc3e1/FLAGbc0df8c7f [2024-10-24 23:41:51,364 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/462cc2785/e6dfd91ee6ee420682b35e0898adc3e1 [2024-10-24 23:41:51,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:41:51,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:41:51,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:41:51,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:41:51,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:41:51,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c2b4385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51, skipping insertion in model container [2024-10-24 23:41:51,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:41:51,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:41:51,554 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:41:51,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:41:51,583 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:41:51,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51 WrapperNode [2024-10-24 23:41:51,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:41:51,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:41:51,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:41:51,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:41:51,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,640 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 111 [2024-10-24 23:41:51,641 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:41:51,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:41:51,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:41:51,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:41:51,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,708 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]. [2024-10-24 23:41:51,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,712 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:41:51,718 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:41:51,718 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:41:51,718 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:41:51,719 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (1/1) ... [2024-10-24 23:41:51,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:41:51,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:51,741 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) [2024-10-24 23:41:51,746 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 [2024-10-24 23:41:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:41:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:41:51,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:41:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:41:51,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:41:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:41:51,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:41:51,796 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-24 23:41:51,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-24 23:41:51,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:41:51,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:41:51,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:41:51,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:41:51,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:41:51,799 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:41:51,893 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:41:51,895 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:41:52,056 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:41:52,056 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:41:52,178 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:41:52,178 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 23:41:52,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:52 BoogieIcfgContainer [2024-10-24 23:41:52,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:41:52,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:41:52,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:41:52,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:41:52,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:41:51" (1/3) ... [2024-10-24 23:41:52,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418799ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:52, skipping insertion in model container [2024-10-24 23:41:52,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:51" (2/3) ... [2024-10-24 23:41:52,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418799ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:52, skipping insertion in model container [2024-10-24 23:41:52,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:52" (3/3) ... [2024-10-24 23:41:52,186 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-10-24 23:41:52,205 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:41:52,205 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-24 23:41:52,205 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:41:52,268 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-24 23:41:52,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-10-24 23:41:52,345 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-10-24 23:41:52,346 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 23:41:52,349 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 163 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. [2024-10-24 23:41:52,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-10-24 23:41:52,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 133 flow [2024-10-24 23:41:52,362 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:41:52,367 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;@7e080b1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:41:52,368 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-24 23:41:52,372 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:41:52,372 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-24 23:41:52,372 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:41:52,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:52,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:41:52,373 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:41:52,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:52,377 INFO L85 PathProgramCache]: Analyzing trace with hash 384261220, now seen corresponding path program 1 times [2024-10-24 23:41:52,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:52,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761190782] [2024-10-24 23:41:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:52,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:52,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:52,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761190782] [2024-10-24 23:41:52,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761190782] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:52,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:52,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:41:52,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537936511] [2024-10-24 23:41:52,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:52,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:52,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:52,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:52,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:41:52,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-24 23:41:52,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-10-24 23:41:52,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:52,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-24 23:41:52,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:53,724 INFO L124 PetriNetUnfolderBase]: 9115/14582 cut-off events. [2024-10-24 23:41:53,724 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-10-24 23:41:53,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27350 conditions, 14582 events. 9115/14582 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 105856 event pairs, 2507 based on Foata normal form. 249/11312 useless extension candidates. Maximal degree in co-relation 24833. Up to 9045 conditions per place. [2024-10-24 23:41:53,850 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 57 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-10-24 23:41:53,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 315 flow [2024-10-24 23:41:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-10-24 23:41:53,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7473118279569892 [2024-10-24 23:41:53,863 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 133 flow. Second operand 3 states and 139 transitions. [2024-10-24 23:41:53,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 315 flow [2024-10-24 23:41:53,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 291 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-24 23:41:53,906 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 134 flow [2024-10-24 23:41:53,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-10-24 23:41:53,911 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -6 predicate places. [2024-10-24 23:41:53,912 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 134 flow [2024-10-24 23:41:53,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-10-24 23:41:53,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:53,912 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:53,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:41:53,913 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:41:53,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:53,913 INFO L85 PathProgramCache]: Analyzing trace with hash -92139897, now seen corresponding path program 1 times [2024-10-24 23:41:53,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:53,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911428153] [2024-10-24 23:41:53,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:53,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:53,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:53,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911428153] [2024-10-24 23:41:53,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911428153] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:53,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:53,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:41:53,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995970045] [2024-10-24 23:41:53,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:53,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:53,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:53,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:54,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-24 23:41:54,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-10-24 23:41:54,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:54,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-24 23:41:54,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:55,269 INFO L124 PetriNetUnfolderBase]: 15375/22262 cut-off events. [2024-10-24 23:41:55,270 INFO L125 PetriNetUnfolderBase]: For 1340/1340 co-relation queries the response was YES. [2024-10-24 23:41:55,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46230 conditions, 22262 events. 15375/22262 cut-off events. For 1340/1340 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 147464 event pairs, 8887 based on Foata normal form. 372/17572 useless extension candidates. Maximal degree in co-relation 20640. Up to 16077 conditions per place. [2024-10-24 23:41:55,406 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 83 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-10-24 23:41:55,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 422 flow [2024-10-24 23:41:55,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-10-24 23:41:55,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6975806451612904 [2024-10-24 23:41:55,409 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 134 flow. Second operand 4 states and 173 transitions. [2024-10-24 23:41:55,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 422 flow [2024-10-24 23:41:55,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 104 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:55,413 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 161 flow [2024-10-24 23:41:55,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-10-24 23:41:55,414 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2024-10-24 23:41:55,414 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 161 flow [2024-10-24 23:41:55,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-10-24 23:41:55,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:55,415 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:55,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:41:55,416 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:41:55,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:55,417 INFO L85 PathProgramCache]: Analyzing trace with hash -917465738, now seen corresponding path program 1 times [2024-10-24 23:41:55,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:55,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930289660] [2024-10-24 23:41:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:55,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:55,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:55,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930289660] [2024-10-24 23:41:55,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930289660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:55,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:55,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:41:55,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640526254] [2024-10-24 23:41:55,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:55,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:55,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:55,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:41:55,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-24 23:41:55,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-24 23:41:55,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:55,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-24 23:41:55,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:56,578 INFO L124 PetriNetUnfolderBase]: 11739/18766 cut-off events. [2024-10-24 23:41:56,579 INFO L125 PetriNetUnfolderBase]: For 3846/5124 co-relation queries the response was YES. [2024-10-24 23:41:56,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40088 conditions, 18766 events. 11739/18766 cut-off events. For 3846/5124 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 136311 event pairs, 3308 based on Foata normal form. 576/15602 useless extension candidates. Maximal degree in co-relation 25685. Up to 11443 conditions per place. [2024-10-24 23:41:56,669 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 58 selfloop transitions, 2 changer transitions 1/82 dead transitions. [2024-10-24 23:41:56,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 361 flow [2024-10-24 23:41:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-10-24 23:41:56,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7043010752688172 [2024-10-24 23:41:56,671 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 161 flow. Second operand 3 states and 131 transitions. [2024-10-24 23:41:56,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 361 flow [2024-10-24 23:41:56,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:56,674 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 176 flow [2024-10-24 23:41:56,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-10-24 23:41:56,674 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2024-10-24 23:41:56,674 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 176 flow [2024-10-24 23:41:56,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-24 23:41:56,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:56,675 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:56,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:41:56,675 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:41:56,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:56,676 INFO L85 PathProgramCache]: Analyzing trace with hash -210445273, now seen corresponding path program 1 times [2024-10-24 23:41:56,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:56,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719265049] [2024-10-24 23:41:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:56,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:56,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:56,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719265049] [2024-10-24 23:41:56,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719265049] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:56,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:56,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:56,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900510198] [2024-10-24 23:41:56,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:56,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:56,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:56,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:56,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-24 23:41:56,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-10-24 23:41:56,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:56,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-24 23:41:56,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:58,907 INFO L124 PetriNetUnfolderBase]: 18934/30472 cut-off events. [2024-10-24 23:41:58,908 INFO L125 PetriNetUnfolderBase]: For 6818/7418 co-relation queries the response was YES. [2024-10-24 23:41:58,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70572 conditions, 30472 events. 18934/30472 cut-off events. For 6818/7418 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 240053 event pairs, 5659 based on Foata normal form. 720/26100 useless extension candidates. Maximal degree in co-relation 17661. Up to 8852 conditions per place. [2024-10-24 23:41:59,046 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 91 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2024-10-24 23:41:59,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 118 transitions, 546 flow [2024-10-24 23:41:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-10-24 23:41:59,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7741935483870968 [2024-10-24 23:41:59,049 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 176 flow. Second operand 4 states and 192 transitions. [2024-10-24 23:41:59,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 118 transitions, 546 flow [2024-10-24 23:41:59,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 118 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:59,055 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 232 flow [2024-10-24 23:41:59,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-10-24 23:41:59,056 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 5 predicate places. [2024-10-24 23:41:59,056 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 232 flow [2024-10-24 23:41:59,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-10-24 23:41:59,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:59,056 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:59,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:41:59,057 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:41:59,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash -455125797, now seen corresponding path program 1 times [2024-10-24 23:41:59,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:59,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007235435] [2024-10-24 23:41:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:59,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:59,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:59,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007235435] [2024-10-24 23:41:59,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007235435] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:59,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810700972] [2024-10-24 23:41:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:59,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:59,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:59,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:59,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:41:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:59,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:41:59,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:59,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:41:59,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810700972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:59,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:41:59,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-24 23:41:59,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381783722] [2024-10-24 23:41:59,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:59,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:59,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:41:59,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-24 23:41:59,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-10-24 23:41:59,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:59,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-24 23:41:59,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:01,117 INFO L124 PetriNetUnfolderBase]: 20899/32657 cut-off events. [2024-10-24 23:42:01,118 INFO L125 PetriNetUnfolderBase]: For 26743/27854 co-relation queries the response was YES. [2024-10-24 23:42:01,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83848 conditions, 32657 events. 20899/32657 cut-off events. For 26743/27854 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 247729 event pairs, 7245 based on Foata normal form. 1292/29712 useless extension candidates. Maximal degree in co-relation 39589. Up to 14689 conditions per place. [2024-10-24 23:42:01,270 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 64 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2024-10-24 23:42:01,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 471 flow [2024-10-24 23:42:01,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:42:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:42:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-10-24 23:42:01,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6491935483870968 [2024-10-24 23:42:01,275 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 232 flow. Second operand 4 states and 161 transitions. [2024-10-24 23:42:01,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 471 flow [2024-10-24 23:42:01,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 465 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 23:42:01,306 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 279 flow [2024-10-24 23:42:01,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-10-24 23:42:01,307 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2024-10-24 23:42:01,308 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 279 flow [2024-10-24 23:42:01,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-10-24 23:42:01,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:01,309 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:01,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:42:01,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:01,510 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:42:01,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1216262695, now seen corresponding path program 1 times [2024-10-24 23:42:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:01,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20297106] [2024-10-24 23:42:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:01,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:01,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:01,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20297106] [2024-10-24 23:42:01,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20297106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:01,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:42:01,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:42:01,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139238710] [2024-10-24 23:42:01,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:01,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:42:01,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:01,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:42:01,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:42:01,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-24 23:42:01,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-24 23:42:01,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:01,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-24 23:42:01,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:04,734 INFO L124 PetriNetUnfolderBase]: 36029/52511 cut-off events. [2024-10-24 23:42:04,734 INFO L125 PetriNetUnfolderBase]: For 83789/87701 co-relation queries the response was YES. [2024-10-24 23:42:04,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143806 conditions, 52511 events. 36029/52511 cut-off events. For 83789/87701 co-relation queries the response was YES. Maximal size of possible extension queue 1726. Compared 382445 event pairs, 20166 based on Foata normal form. 1792/49291 useless extension candidates. Maximal degree in co-relation 63047. Up to 37232 conditions per place. [2024-10-24 23:42:05,044 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 106 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-10-24 23:42:05,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 128 transitions, 859 flow [2024-10-24 23:42:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:42:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:42:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-10-24 23:42:05,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6693548387096774 [2024-10-24 23:42:05,045 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 279 flow. Second operand 4 states and 166 transitions. [2024-10-24 23:42:05,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 128 transitions, 859 flow [2024-10-24 23:42:05,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 128 transitions, 798 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-10-24 23:42:05,107 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 287 flow [2024-10-24 23:42:05,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-10-24 23:42:05,108 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2024-10-24 23:42:05,108 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 287 flow [2024-10-24 23:42:05,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-24 23:42:05,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:05,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:05,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:42:05,109 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:42:05,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash -374429911, now seen corresponding path program 1 times [2024-10-24 23:42:05,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:05,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869421110] [2024-10-24 23:42:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:05,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:05,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:05,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869421110] [2024-10-24 23:42:05,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869421110] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:05,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:42:05,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:42:05,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046356938] [2024-10-24 23:42:05,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:05,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:42:05,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:05,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:42:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:42:05,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-24 23:42:05,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-24 23:42:05,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:05,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-24 23:42:05,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:10,568 INFO L124 PetriNetUnfolderBase]: 52888/78092 cut-off events. [2024-10-24 23:42:10,569 INFO L125 PetriNetUnfolderBase]: For 82162/92631 co-relation queries the response was YES. [2024-10-24 23:42:10,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212303 conditions, 78092 events. 52888/78092 cut-off events. For 82162/92631 co-relation queries the response was YES. Maximal size of possible extension queue 2308. Compared 599228 event pairs, 29683 based on Foata normal form. 4044/73373 useless extension candidates. Maximal degree in co-relation 75557. Up to 50214 conditions per place. [2024-10-24 23:42:11,189 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 112 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-10-24 23:42:11,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 135 transitions, 829 flow [2024-10-24 23:42:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:42:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:42:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-10-24 23:42:11,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6854838709677419 [2024-10-24 23:42:11,190 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 287 flow. Second operand 4 states and 170 transitions. [2024-10-24 23:42:11,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 135 transitions, 829 flow [2024-10-24 23:42:11,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 135 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:42:11,363 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 313 flow [2024-10-24 23:42:11,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=76, 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=313, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-10-24 23:42:11,364 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2024-10-24 23:42:11,364 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 313 flow [2024-10-24 23:42:11,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-24 23:42:11,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:11,365 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:11,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:42:11,365 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:42:11,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:11,366 INFO L85 PathProgramCache]: Analyzing trace with hash 710788414, now seen corresponding path program 1 times [2024-10-24 23:42:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:11,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439308924] [2024-10-24 23:42:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:11,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:11,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:11,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439308924] [2024-10-24 23:42:11,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439308924] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:11,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962028050] [2024-10-24 23:42:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:11,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:11,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:11,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:42:11,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:42:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:11,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:42:11,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:11,498 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:42:11,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962028050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:11,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:42:11,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:42:11,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875115801] [2024-10-24 23:42:11,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:11,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:42:11,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:11,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:42:11,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:42:11,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-24 23:42:11,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2024-10-24 23:42:11,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:11,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-24 23:42:11,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:16,515 INFO L124 PetriNetUnfolderBase]: 47268/70107 cut-off events. [2024-10-24 23:42:16,516 INFO L125 PetriNetUnfolderBase]: For 75116/83846 co-relation queries the response was YES. [2024-10-24 23:42:16,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203272 conditions, 70107 events. 47268/70107 cut-off events. For 75116/83846 co-relation queries the response was YES. Maximal size of possible extension queue 2176. Compared 536059 event pairs, 9345 based on Foata normal form. 5058/66801 useless extension candidates. Maximal degree in co-relation 88400. Up to 23515 conditions per place. [2024-10-24 23:42:16,972 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 158 selfloop transitions, 7 changer transitions 0/184 dead transitions. [2024-10-24 23:42:16,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 184 transitions, 1099 flow [2024-10-24 23:42:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:42:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:42:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-10-24 23:42:16,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6881720430107527 [2024-10-24 23:42:16,976 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 313 flow. Second operand 6 states and 256 transitions. [2024-10-24 23:42:16,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 184 transitions, 1099 flow [2024-10-24 23:42:17,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 184 transitions, 1084 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:42:17,026 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 320 flow [2024-10-24 23:42:17,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-10-24 23:42:17,027 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 19 predicate places. [2024-10-24 23:42:17,027 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 320 flow [2024-10-24 23:42:17,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2024-10-24 23:42:17,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:17,027 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 23:42:17,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:42:17,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-24 23:42:17,228 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:42:17,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:17,228 INFO L85 PathProgramCache]: Analyzing trace with hash 559604801, now seen corresponding path program 1 times [2024-10-24 23:42:17,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:17,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449332419] [2024-10-24 23:42:17,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:17,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:17,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:17,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449332419] [2024-10-24 23:42:17,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449332419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:17,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735950188] [2024-10-24 23:42:17,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:17,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:17,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:17,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:42:17,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:42:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:17,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:42:17,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:17,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:42:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:17,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735950188] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:42:17,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:42:17,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-24 23:42:17,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36009739] [2024-10-24 23:42:17,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:42:17,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:42:17,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:42:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:42:17,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-10-24 23:42:17,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 22.666666666666668) internal successors, (272), 12 states have internal predecessors, (272), 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) [2024-10-24 23:42:17,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:17,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-10-24 23:42:17,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:28,880 INFO L124 PetriNetUnfolderBase]: 102170/152964 cut-off events. [2024-10-24 23:42:28,881 INFO L125 PetriNetUnfolderBase]: For 212107/230555 co-relation queries the response was YES. [2024-10-24 23:42:29,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456472 conditions, 152964 events. 102170/152964 cut-off events. For 212107/230555 co-relation queries the response was YES. Maximal size of possible extension queue 3474. Compared 1241699 event pairs, 28367 based on Foata normal form. 11231/151112 useless extension candidates. Maximal degree in co-relation 168760. Up to 57416 conditions per place. [2024-10-24 23:42:30,222 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 299 selfloop transitions, 13 changer transitions 0/331 dead transitions. [2024-10-24 23:42:30,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 331 transitions, 2081 flow [2024-10-24 23:42:30,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:42:30,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:42:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 448 transitions. [2024-10-24 23:42:30,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7225806451612903 [2024-10-24 23:42:30,224 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 320 flow. Second operand 10 states and 448 transitions. [2024-10-24 23:42:30,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 331 transitions, 2081 flow [2024-10-24 23:42:30,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 331 transitions, 2051 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-24 23:42:30,371 INFO L231 Difference]: Finished difference. Result has 92 places, 79 transitions, 388 flow [2024-10-24 23:42:30,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=388, PETRI_PLACES=92, PETRI_TRANSITIONS=79} [2024-10-24 23:42:30,373 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 27 predicate places. [2024-10-24 23:42:30,373 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 79 transitions, 388 flow [2024-10-24 23:42:30,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.666666666666668) internal successors, (272), 12 states have internal predecessors, (272), 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) [2024-10-24 23:42:30,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:30,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:30,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 23:42:30,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:30,578 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:42:30,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:30,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1406992510, now seen corresponding path program 1 times [2024-10-24 23:42:30,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:30,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814007669] [2024-10-24 23:42:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:30,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:30,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:30,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814007669] [2024-10-24 23:42:30,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814007669] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:30,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:42:30,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:42:30,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064157208] [2024-10-24 23:42:30,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:30,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:42:30,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:30,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:42:30,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:42:30,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-24 23:42:30,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 79 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-10-24 23:42:30,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:30,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-24 23:42:30,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand