./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-proofs-counter-add-4-semi-Q67.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-proofs-counter-add-4-semi-Q67.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 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:43:55,190 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:43:55,281 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:43:55,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:43:55,289 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:43:55,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:43:55,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:43:55,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:43:55,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:43:55,311 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:43:55,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:43:55,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:43:55,312 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:43:55,312 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:43:55,313 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:43:55,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:43:55,314 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:43:55,314 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:43:55,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:43:55,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:43:55,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:43:55,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:43:55,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:43:55,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:43:55,317 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:43:55,317 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:43:55,318 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:43:55,318 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:43:55,318 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:43:55,319 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:43:55,319 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:43:55,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:43:55,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:43:55,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:43:55,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:43:55,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:43:55,324 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:43:55,324 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:43:55,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:43:55,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:43:55,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:43:55,325 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:43:55,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:43:55,326 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:43:55,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 [2024-10-24 23:43:55,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:43:55,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:43:55,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:43:55,625 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:43:55,625 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:43:55,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-10-24 23:43:57,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:43:57,236 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:43:57,237 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-10-24 23:43:57,245 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54191c4a6/663049d6b65347678bc883d3e02f8c50/FLAG2e405012e [2024-10-24 23:43:57,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54191c4a6/663049d6b65347678bc883d3e02f8c50 [2024-10-24 23:43:57,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:43:57,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:43:57,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:43:57,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:43:57,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:43:57,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da96ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57, skipping insertion in model container [2024-10-24 23:43:57,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,294 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:43:57,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:43:57,551 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:43:57,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:43:57,604 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:43:57,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57 WrapperNode [2024-10-24 23:43:57,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:43:57,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:43:57,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:43:57,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:43:57,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,657 INFO L138 Inliner]: procedures = 21, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2024-10-24 23:43:57,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:43:57,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:43:57,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:43:57,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:43:57,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,716 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 23:43:57,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:43:57,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:43:57,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:43:57,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:43:57,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (1/1) ... [2024-10-24 23:43:57,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:43:57,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:57,777 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 23:43:57,785 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 23:43:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:43:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:43:57,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:43:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:43:57,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:43:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:43:57,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:43:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-24 23:43:57,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-24 23:43:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:43:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:43:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:43:57,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:43:57,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:43:57,839 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 23:43:57,931 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:43:57,933 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:43:58,205 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:43:58,206 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:43:58,501 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:43:58,502 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 23:43:58,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:43:58 BoogieIcfgContainer [2024-10-24 23:43:58,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:43:58,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:43:58,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:43:58,508 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:43:58,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:43:57" (1/3) ... [2024-10-24 23:43:58,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a7e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:43:58, skipping insertion in model container [2024-10-24 23:43:58,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:57" (2/3) ... [2024-10-24 23:43:58,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a7e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:43:58, skipping insertion in model container [2024-10-24 23:43:58,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:43:58" (3/3) ... [2024-10-24 23:43:58,513 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-10-24 23:43:58,532 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:43:58,533 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-24 23:43:58,533 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:43:58,602 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-24 23:43:58,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 128 flow [2024-10-24 23:43:58,690 INFO L124 PetriNetUnfolderBase]: 4/46 cut-off events. [2024-10-24 23:43:58,690 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 23:43:58,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 4/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 115 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-10-24 23:43:58,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 128 flow [2024-10-24 23:43:58,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 109 flow [2024-10-24 23:43:58,713 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:43:58,720 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;@50e15e09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:43:58,720 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-24 23:43:58,726 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:43:58,727 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-10-24 23:43:58,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:43:58,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:58,728 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:43:58,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:43:58,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:58,735 INFO L85 PathProgramCache]: Analyzing trace with hash 464065349, now seen corresponding path program 1 times [2024-10-24 23:43:58,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:58,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145224616] [2024-10-24 23:43:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:58,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:59,024 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 23:43:59,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:59,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145224616] [2024-10-24 23:43:59,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145224616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:59,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:59,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:43:59,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338375268] [2024-10-24 23:43:59,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:59,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:43:59,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:59,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:43:59,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:43:59,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 23:43:59,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 23:43:59,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:59,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 23:43:59,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:01,943 INFO L124 PetriNetUnfolderBase]: 25764/31176 cut-off events. [2024-10-24 23:44:01,944 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2024-10-24 23:44:02,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62441 conditions, 31176 events. 25764/31176 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 2173. Compared 132537 event pairs, 5100 based on Foata normal form. 39/13833 useless extension candidates. Maximal degree in co-relation 58536. Up to 30081 conditions per place. [2024-10-24 23:44:02,278 INFO L140 encePairwiseOnDemand]: 29/50 looper letters, 46 selfloop transitions, 7 changer transitions 1/62 dead transitions. [2024-10-24 23:44:02,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 271 flow [2024-10-24 23:44:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:44:02,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:44:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-24 23:44:02,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2024-10-24 23:44:02,293 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 109 flow. Second operand 3 states and 106 transitions. [2024-10-24 23:44:02,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 271 flow [2024-10-24 23:44:02,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 247 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-24 23:44:02,311 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 161 flow [2024-10-24 23:44:02,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2024-10-24 23:44:02,320 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2024-10-24 23:44:02,320 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 161 flow [2024-10-24 23:44:02,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 23:44:02,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:02,321 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:44:02,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:44:02,322 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:44:02,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:02,323 INFO L85 PathProgramCache]: Analyzing trace with hash 464065351, now seen corresponding path program 1 times [2024-10-24 23:44:02,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:02,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160610742] [2024-10-24 23:44:02,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:02,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:02,424 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 23:44:02,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:02,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160610742] [2024-10-24 23:44:02,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160610742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:02,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:02,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:44:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646546592] [2024-10-24 23:44:02,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:02,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:44:02,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:02,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:44:02,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:44:02,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 23:44:02,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 23:44:02,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:02,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 23:44:02,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:05,405 INFO L124 PetriNetUnfolderBase]: 31030/38418 cut-off events. [2024-10-24 23:44:05,406 INFO L125 PetriNetUnfolderBase]: For 2339/2339 co-relation queries the response was YES. [2024-10-24 23:44:05,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103651 conditions, 38418 events. 31030/38418 cut-off events. For 2339/2339 co-relation queries the response was YES. Maximal size of possible extension queue 2973. Compared 188017 event pairs, 12297 based on Foata normal form. 0/17730 useless extension candidates. Maximal degree in co-relation 46525. Up to 26985 conditions per place. [2024-10-24 23:44:05,660 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 65 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-10-24 23:44:05,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 76 transitions, 386 flow [2024-10-24 23:44:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:44:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:44:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-24 23:44:05,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-10-24 23:44:05,664 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 161 flow. Second operand 3 states and 102 transitions. [2024-10-24 23:44:05,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 76 transitions, 386 flow [2024-10-24 23:44:05,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:44:05,668 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 165 flow [2024-10-24 23:44:05,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-10-24 23:44:05,669 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2024-10-24 23:44:05,670 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 165 flow [2024-10-24 23:44:05,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 23:44:05,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:05,671 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-24 23:44:05,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:44:05,671 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:44:05,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash -709779765, now seen corresponding path program 1 times [2024-10-24 23:44:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:05,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028903018] [2024-10-24 23:44:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:05,773 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 23:44:05,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:05,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028903018] [2024-10-24 23:44:05,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028903018] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:05,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766362622] [2024-10-24 23:44:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:05,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:05,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:05,777 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 23:44:05,778 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 23:44:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:05,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:44:05,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:05,902 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 23:44:05,904 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:44:05,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766362622] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:05,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:44:05,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-24 23:44:05,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198650121] [2024-10-24 23:44:05,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:05,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:44:05,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:44:05,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:44:05,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 23:44:05,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 23:44:05,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:05,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 23:44:05,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:08,435 INFO L124 PetriNetUnfolderBase]: 36670/45828 cut-off events. [2024-10-24 23:44:08,435 INFO L125 PetriNetUnfolderBase]: For 7771/8160 co-relation queries the response was YES. [2024-10-24 23:44:08,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126973 conditions, 45828 events. 36670/45828 cut-off events. For 7771/8160 co-relation queries the response was YES. Maximal size of possible extension queue 3502. Compared 241019 event pairs, 6474 based on Foata normal form. 0/23705 useless extension candidates. Maximal degree in co-relation 36961. Up to 31431 conditions per place. [2024-10-24 23:44:08,954 INFO L140 encePairwiseOnDemand]: 31/50 looper letters, 46 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2024-10-24 23:44:08,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 405 flow [2024-10-24 23:44:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:44:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:44:08,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-10-24 23:44:08,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-10-24 23:44:08,956 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 165 flow. Second operand 4 states and 114 transitions. [2024-10-24 23:44:08,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 405 flow [2024-10-24 23:44:08,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:44:08,961 INFO L231 Difference]: Finished difference. Result has 51 places, 62 transitions, 351 flow [2024-10-24 23:44:08,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=51, PETRI_TRANSITIONS=62} [2024-10-24 23:44:08,962 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2024-10-24 23:44:08,963 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 62 transitions, 351 flow [2024-10-24 23:44:08,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 23:44:08,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:08,963 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-24 23:44:08,981 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 23:44:09,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:09,168 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:44:09,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:09,169 INFO L85 PathProgramCache]: Analyzing trace with hash -709779764, now seen corresponding path program 1 times [2024-10-24 23:44:09,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:09,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448421170] [2024-10-24 23:44:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:09,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:09,233 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 23:44:09,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:09,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448421170] [2024-10-24 23:44:09,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448421170] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:09,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358980340] [2024-10-24 23:44:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:09,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:09,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:09,237 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 23:44:09,239 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 23:44:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:09,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:44:09,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:09,326 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 23:44:09,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:09,351 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 23:44:09,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358980340] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:09,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:09,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-24 23:44:09,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097974406] [2024-10-24 23:44:09,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:09,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 23:44:09,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:09,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 23:44:09,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:44:09,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 23:44:09,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 62 transitions, 351 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 23:44:09,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:09,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 23:44:09,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:15,609 INFO L124 PetriNetUnfolderBase]: 79612/101219 cut-off events. [2024-10-24 23:44:15,609 INFO L125 PetriNetUnfolderBase]: For 71117/72523 co-relation queries the response was YES. [2024-10-24 23:44:15,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374601 conditions, 101219 events. 79612/101219 cut-off events. For 71117/72523 co-relation queries the response was YES. Maximal size of possible extension queue 5787. Compared 582781 event pairs, 5104 based on Foata normal form. 9996/72698 useless extension candidates. Maximal degree in co-relation 182925. Up to 64900 conditions per place. [2024-10-24 23:44:16,541 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 117 selfloop transitions, 52 changer transitions 0/177 dead transitions. [2024-10-24 23:44:16,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 177 transitions, 1287 flow [2024-10-24 23:44:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:44:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:44:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-10-24 23:44:16,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2024-10-24 23:44:16,543 INFO L175 Difference]: Start difference. First operand has 51 places, 62 transitions, 351 flow. Second operand 6 states and 224 transitions. [2024-10-24 23:44:16,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 177 transitions, 1287 flow [2024-10-24 23:44:16,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 177 transitions, 1174 flow, removed 56 selfloop flow, removed 1 redundant places. [2024-10-24 23:44:16,606 INFO L231 Difference]: Finished difference. Result has 59 places, 109 transitions, 928 flow [2024-10-24 23:44:16,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=928, PETRI_PLACES=59, PETRI_TRANSITIONS=109} [2024-10-24 23:44:16,608 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-10-24 23:44:16,608 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 109 transitions, 928 flow [2024-10-24 23:44:16,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 23:44:16,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:16,608 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-24 23:44:16,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 23:44:16,809 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,SelfDestructingSolverStorable3 [2024-10-24 23:44:16,809 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:44:16,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:16,810 INFO L85 PathProgramCache]: Analyzing trace with hash -709779762, now seen corresponding path program 1 times [2024-10-24 23:44:16,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:16,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697511329] [2024-10-24 23:44:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:16,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:16,872 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 23:44:16,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:16,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697511329] [2024-10-24 23:44:16,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697511329] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:16,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492871267] [2024-10-24 23:44:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:16,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:16,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:16,874 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 23:44:16,875 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 23:44:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:16,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:44:16,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:16,951 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 23:44:16,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:16,974 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 23:44:16,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492871267] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:16,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:16,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-24 23:44:16,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456894855] [2024-10-24 23:44:16,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:16,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 23:44:16,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:16,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 23:44:16,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:44:16,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 23:44:16,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 109 transitions, 928 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 23:44:16,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:16,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 23:44:16,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:32,377 INFO L124 PetriNetUnfolderBase]: 163657/207735 cut-off events. [2024-10-24 23:44:32,377 INFO L125 PetriNetUnfolderBase]: For 321648/321648 co-relation queries the response was YES. [2024-10-24 23:44:32,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922359 conditions, 207735 events. 163657/207735 cut-off events. For 321648/321648 co-relation queries the response was YES. Maximal size of possible extension queue 11085. Compared 1274818 event pairs, 21638 based on Foata normal form. 0/134520 useless extension candidates. Maximal degree in co-relation 597335. Up to 71130 conditions per place. [2024-10-24 23:44:34,339 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 414 selfloop transitions, 58 changer transitions 0/480 dead transitions. [2024-10-24 23:44:34,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 480 transitions, 5001 flow [2024-10-24 23:44:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:44:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:44:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2024-10-24 23:44:34,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7314285714285714 [2024-10-24 23:44:34,340 INFO L175 Difference]: Start difference. First operand has 59 places, 109 transitions, 928 flow. Second operand 7 states and 256 transitions. [2024-10-24 23:44:34,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 480 transitions, 5001 flow [2024-10-24 23:44:53,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 480 transitions, 4889 flow, removed 56 selfloop flow, removed 0 redundant places. [2024-10-24 23:44:53,942 INFO L231 Difference]: Finished difference. Result has 68 places, 151 transitions, 1574 flow [2024-10-24 23:44:53,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1574, PETRI_PLACES=68, PETRI_TRANSITIONS=151} [2024-10-24 23:44:53,944 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-10-24 23:44:53,944 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 151 transitions, 1574 flow [2024-10-24 23:44:53,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 23:44:53,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:53,944 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-24 23:44:53,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:44:54,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:54,149 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-24 23:44:54,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:54,149 INFO L85 PathProgramCache]: Analyzing trace with hash -709779763, now seen corresponding path program 1 times [2024-10-24 23:44:54,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:54,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578339950] [2024-10-24 23:44:54,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:54,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:54,198 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 23:44:54,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578339950] [2024-10-24 23:44:54,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578339950] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448906808] [2024-10-24 23:44:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:54,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:54,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:54,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:44:54,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:44:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:54,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:44:54,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:54,269 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 23:44:54,270 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:44:54,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448906808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:54,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:44:54,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-24 23:44:54,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053834498] [2024-10-24 23:44:54,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:54,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:44:54,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:54,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:44:54,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:44:54,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-10-24 23:44:54,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 151 transitions, 1574 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 23:44:54,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:54,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-10-24 23:44:54,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand