./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/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.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 1b3f2e76aa91b47c1b0ab3ebb03a5219efabc6e79eff8c780f49eaa0a2d155ad --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:00:45,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:00:45,409 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:00:45,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:00:45,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:00:45,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:00:45,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:00:45,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:00:45,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:00:45,453 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:00:45,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:00:45,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:00:45,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:00:45,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:00:45,458 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:00:45,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:00:45,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:00:45,459 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:00:45,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:00:45,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:00:45,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:00:45,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:00:45,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:00:45,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:00:45,461 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:00:45,462 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:00:45,462 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:00:45,462 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:00:45,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:00:45,463 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:00:45,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:00:45,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:00:45,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:00:45,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:00:45,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:00:45,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:00:45,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:00:45,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:00:45,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:00:45,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:00:45,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:00:45,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:00:45,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:00:45,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:00:45,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b3f2e76aa91b47c1b0ab3ebb03a5219efabc6e79eff8c780f49eaa0a2d155ad [2024-10-15 00:00:45,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:00:45,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:00:45,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:00:45,765 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:00:45,766 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:00:45,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-10-15 00:00:47,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:00:47,508 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:00:47,509 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-10-15 00:00:47,517 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1c3776e/37a5c03e73b3421ab57cdf16c1696f88/FLAG187c2abd2 [2024-10-15 00:00:47,878 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b1c3776e/37a5c03e73b3421ab57cdf16c1696f88 [2024-10-15 00:00:47,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:00:47,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:00:47,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:00:47,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:00:47,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:00:47,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:00:47" (1/1) ... [2024-10-15 00:00:47,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53123e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:47, skipping insertion in model container [2024-10-15 00:00:47,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:00:47" (1/1) ... [2024-10-15 00:00:47,928 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:00:48,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:00:48,146 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:00:48,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:00:48,183 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:00:48,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48 WrapperNode [2024-10-15 00:00:48,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:00:48,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:00:48,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:00:48,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:00:48,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,222 INFO L138 Inliner]: procedures = 21, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2024-10-15 00:00:48,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:00:48,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:00:48,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:00:48,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:00:48,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,267 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]. [2024-10-15 00:00:48,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:00:48,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:00:48,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:00:48,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:00:48,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (1/1) ... [2024-10-15 00:00:48,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:00:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:48,323 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) [2024-10-15 00:00:48,327 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 [2024-10-15 00:00:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:00:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:00:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:00:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:00:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:00:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:00:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:00:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:00:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:00:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:00:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:00:48,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:00:48,390 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:00:48,496 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:00:48,498 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:00:48,774 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:00:48,774 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:00:49,086 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:00:49,086 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-15 00:00:49,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:49 BoogieIcfgContainer [2024-10-15 00:00:49,087 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:00:49,094 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:00:49,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:00:49,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:00:49,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:00:47" (1/3) ... [2024-10-15 00:00:49,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a369d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:00:49, skipping insertion in model container [2024-10-15 00:00:49,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:48" (2/3) ... [2024-10-15 00:00:49,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a369d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:00:49, skipping insertion in model container [2024-10-15 00:00:49,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:49" (3/3) ... [2024-10-15 00:00:49,106 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2024-10-15 00:00:49,128 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:00:49,128 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-15 00:00:49,129 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:00:49,199 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-15 00:00:49,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 45 transitions, 111 flow [2024-10-15 00:00:49,277 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events. [2024-10-15 00:00:49,277 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-15 00:00:49,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 4/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2024-10-15 00:00:49,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 45 transitions, 111 flow [2024-10-15 00:00:49,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 39 transitions, 90 flow [2024-10-15 00:00:49,301 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:00:49,307 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;@3f32a262, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:00:49,308 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-15 00:00:49,316 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:00:49,316 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-15 00:00:49,316 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-15 00:00:49,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:49,317 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:49,318 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-15 00:00:49,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:49,323 INFO L85 PathProgramCache]: Analyzing trace with hash -512190440, now seen corresponding path program 1 times [2024-10-15 00:00:49,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:49,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631882424] [2024-10-15 00:00:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:49,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:49,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:49,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631882424] [2024-10-15 00:00:49,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631882424] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:49,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:49,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:00:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843085852] [2024-10-15 00:00:49,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:49,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:00:49,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:49,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:00:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:00:49,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-15 00:00:49,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-15 00:00:49,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:49,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-15 00:00:49,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:50,172 INFO L124 PetriNetUnfolderBase]: 1263/2136 cut-off events. [2024-10-15 00:00:50,173 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-10-15 00:00:50,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4069 conditions, 2136 events. 1263/2136 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 13846 event pairs, 358 based on Foata normal form. 0/1326 useless extension candidates. Maximal degree in co-relation 3876. Up to 994 conditions per place. [2024-10-15 00:00:50,202 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 33 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-10-15 00:00:50,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 213 flow [2024-10-15 00:00:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:00:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:00:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-10-15 00:00:50,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7481481481481481 [2024-10-15 00:00:50,222 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 90 flow. Second operand 3 states and 101 transitions. [2024-10-15 00:00:50,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 213 flow [2024-10-15 00:00:50,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 203 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-15 00:00:50,236 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 144 flow [2024-10-15 00:00:50,239 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-10-15 00:00:50,246 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-10-15 00:00:50,247 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 144 flow [2024-10-15 00:00:50,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-15 00:00:50,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:50,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:50,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:00:50,247 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-15 00:00:50,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:50,248 INFO L85 PathProgramCache]: Analyzing trace with hash -512190439, now seen corresponding path program 1 times [2024-10-15 00:00:50,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:50,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918305570] [2024-10-15 00:00:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:50,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:50,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:50,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918305570] [2024-10-15 00:00:50,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918305570] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:50,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:50,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:00:50,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671313899] [2024-10-15 00:00:50,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:50,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:00:50,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:50,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:00:50,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:00:50,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-15 00:00:50,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-15 00:00:50,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:50,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-15 00:00:50,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:50,783 INFO L124 PetriNetUnfolderBase]: 1974/3284 cut-off events. [2024-10-15 00:00:50,784 INFO L125 PetriNetUnfolderBase]: For 2128/2128 co-relation queries the response was YES. [2024-10-15 00:00:50,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 3284 events. 1974/3284 cut-off events. For 2128/2128 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 20164 event pairs, 358 based on Foata normal form. 194/2998 useless extension candidates. Maximal degree in co-relation 4359. Up to 1653 conditions per place. [2024-10-15 00:00:50,821 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 41 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-10-15 00:00:50,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 303 flow [2024-10-15 00:00:50,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:00:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:00:50,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-10-15 00:00:50,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7481481481481481 [2024-10-15 00:00:50,824 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 144 flow. Second operand 3 states and 101 transitions. [2024-10-15 00:00:50,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 303 flow [2024-10-15 00:00:50,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 64 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:00:50,839 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 206 flow [2024-10-15 00:00:50,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2024-10-15 00:00:50,840 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-10-15 00:00:50,841 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 206 flow [2024-10-15 00:00:50,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-15 00:00:50,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:50,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:50,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 00:00:50,843 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-15 00:00:50,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1466962396, now seen corresponding path program 1 times [2024-10-15 00:00:50,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:50,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417128806] [2024-10-15 00:00:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:50,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:50,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:50,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417128806] [2024-10-15 00:00:50,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417128806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:50,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:50,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:00:50,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178598278] [2024-10-15 00:00:50,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:50,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:00:50,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:50,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:00:50,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:00:50,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-10-15 00:00:50,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-15 00:00:50,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:50,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-10-15 00:00:50,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:51,474 INFO L124 PetriNetUnfolderBase]: 2661/4090 cut-off events. [2024-10-15 00:00:51,476 INFO L125 PetriNetUnfolderBase]: For 3621/4675 co-relation queries the response was YES. [2024-10-15 00:00:51,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11337 conditions, 4090 events. 2661/4090 cut-off events. For 3621/4675 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 24437 event pairs, 756 based on Foata normal form. 4/3591 useless extension candidates. Maximal degree in co-relation 9341. Up to 1838 conditions per place. [2024-10-15 00:00:51,528 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 58 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-10-15 00:00:51,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 425 flow [2024-10-15 00:00:51,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:00:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:00:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-10-15 00:00:51,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6814814814814815 [2024-10-15 00:00:51,532 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 206 flow. Second operand 3 states and 92 transitions. [2024-10-15 00:00:51,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 425 flow [2024-10-15 00:00:51,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 74 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:00:51,544 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 214 flow [2024-10-15 00:00:51,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2024-10-15 00:00:51,546 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-10-15 00:00:51,546 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 214 flow [2024-10-15 00:00:51,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-15 00:00:51,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:51,547 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:51,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-15 00:00:51,547 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-15 00:00:51,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:51,548 INFO L85 PathProgramCache]: Analyzing trace with hash -412517145, now seen corresponding path program 1 times [2024-10-15 00:00:51,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:51,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755567464] [2024-10-15 00:00:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:51,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:51,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:51,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755567464] [2024-10-15 00:00:51,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755567464] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:51,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193467037] [2024-10-15 00:00:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:51,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:51,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:51,686 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) [2024-10-15 00:00:51,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:00:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:51,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:00:51,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:51,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:51,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193467037] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:51,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:51,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-15 00:00:51,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803226392] [2024-10-15 00:00:51,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:51,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-15 00:00:51,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:51,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-15 00:00:51,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:00:51,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-15 00:00:51,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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) [2024-10-15 00:00:51,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:51,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-15 00:00:51,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:52,759 INFO L124 PetriNetUnfolderBase]: 4322/7547 cut-off events. [2024-10-15 00:00:52,760 INFO L125 PetriNetUnfolderBase]: For 5328/5328 co-relation queries the response was YES. [2024-10-15 00:00:52,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19658 conditions, 7547 events. 4322/7547 cut-off events. For 5328/5328 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 52148 event pairs, 125 based on Foata normal form. 260/7249 useless extension candidates. Maximal degree in co-relation 17802. Up to 2051 conditions per place. [2024-10-15 00:00:52,902 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 85 selfloop transitions, 38 changer transitions 0/141 dead transitions. [2024-10-15 00:00:52,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 141 transitions, 783 flow [2024-10-15 00:00:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 00:00:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-15 00:00:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 252 transitions. [2024-10-15 00:00:52,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-10-15 00:00:52,906 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 214 flow. Second operand 7 states and 252 transitions. [2024-10-15 00:00:52,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 141 transitions, 783 flow [2024-10-15 00:00:52,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 141 transitions, 777 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:00:52,918 INFO L231 Difference]: Finished difference. Result has 57 places, 89 transitions, 604 flow [2024-10-15 00:00:52,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=604, PETRI_PLACES=57, PETRI_TRANSITIONS=89} [2024-10-15 00:00:52,921 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-10-15 00:00:52,921 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 89 transitions, 604 flow [2024-10-15 00:00:52,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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) [2024-10-15 00:00:52,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:52,922 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:52,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 00:00:53,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:53,128 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-15 00:00:53,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:53,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1645265699, now seen corresponding path program 1 times [2024-10-15 00:00:53,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:53,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528903517] [2024-10-15 00:00:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:53,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:53,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:53,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528903517] [2024-10-15 00:00:53,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528903517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:53,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:53,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:00:53,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567184852] [2024-10-15 00:00:53,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:53,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:00:53,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:53,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:00:53,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:00:53,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-10-15 00:00:53,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 89 transitions, 604 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-15 00:00:53,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:53,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-10-15 00:00:53,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:54,303 INFO L124 PetriNetUnfolderBase]: 5708/9090 cut-off events. [2024-10-15 00:00:54,303 INFO L125 PetriNetUnfolderBase]: For 23820/23820 co-relation queries the response was YES. [2024-10-15 00:00:54,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30194 conditions, 9090 events. 5708/9090 cut-off events. For 23820/23820 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 61843 event pairs, 1606 based on Foata normal form. 0/8283 useless extension candidates. Maximal degree in co-relation 14725. Up to 4064 conditions per place. [2024-10-15 00:00:54,411 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 102 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-10-15 00:00:54,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 120 transitions, 1037 flow [2024-10-15 00:00:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:00:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:00:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-15 00:00:54,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-15 00:00:54,414 INFO L175 Difference]: Start difference. First operand has 57 places, 89 transitions, 604 flow. Second operand 3 states and 90 transitions. [2024-10-15 00:00:54,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 120 transitions, 1037 flow [2024-10-15 00:00:54,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 120 transitions, 1025 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-15 00:00:54,457 INFO L231 Difference]: Finished difference. Result has 61 places, 86 transitions, 577 flow [2024-10-15 00:00:54,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=577, PETRI_PLACES=61, PETRI_TRANSITIONS=86} [2024-10-15 00:00:54,460 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-10-15 00:00:54,462 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 86 transitions, 577 flow [2024-10-15 00:00:54,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-15 00:00:54,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:54,463 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:54,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:00:54,463 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-15 00:00:54,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:54,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1041093130, now seen corresponding path program 1 times [2024-10-15 00:00:54,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:54,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382268108] [2024-10-15 00:00:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:54,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:00:54,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:54,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382268108] [2024-10-15 00:00:54,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382268108] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:54,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:54,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:00:54,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15340615] [2024-10-15 00:00:54,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:54,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:00:54,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:54,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:00:54,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:00:54,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-15 00:00:54,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 86 transitions, 577 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:54,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:54,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-15 00:00:54,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:55,213 INFO L124 PetriNetUnfolderBase]: 3147/5335 cut-off events. [2024-10-15 00:00:55,214 INFO L125 PetriNetUnfolderBase]: For 20346/20346 co-relation queries the response was YES. [2024-10-15 00:00:55,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17963 conditions, 5335 events. 3147/5335 cut-off events. For 20346/20346 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 37804 event pairs, 1620 based on Foata normal form. 338/4880 useless extension candidates. Maximal degree in co-relation 9988. Up to 4322 conditions per place. [2024-10-15 00:00:55,395 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 53 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2024-10-15 00:00:55,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 579 flow [2024-10-15 00:00:55,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:00:55,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:00:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-15 00:00:55,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-15 00:00:55,398 INFO L175 Difference]: Start difference. First operand has 61 places, 86 transitions, 577 flow. Second operand 3 states and 80 transitions. [2024-10-15 00:00:55,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 579 flow [2024-10-15 00:00:55,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:00:55,413 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 467 flow [2024-10-15 00:00:55,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2024-10-15 00:00:55,417 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-10-15 00:00:55,418 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 467 flow [2024-10-15 00:00:55,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:55,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:55,419 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:55,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:00:55,419 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-15 00:00:55,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:55,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1041093096, now seen corresponding path program 1 times [2024-10-15 00:00:55,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:55,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095471657] [2024-10-15 00:00:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:55,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:00:55,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:55,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095471657] [2024-10-15 00:00:55,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095471657] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:55,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848106758] [2024-10-15 00:00:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:55,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:55,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:55,560 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) [2024-10-15 00:00:55,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:00:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:55,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:00:55,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:55,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:00:55,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848106758] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:55,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:55,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 2] total 5 [2024-10-15 00:00:55,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256898503] [2024-10-15 00:00:55,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:55,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-15 00:00:55,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:55,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-15 00:00:55,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:00:55,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-15 00:00:55,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 467 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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) [2024-10-15 00:00:55,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:55,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-15 00:00:55,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:57,348 INFO L124 PetriNetUnfolderBase]: 7236/14419 cut-off events. [2024-10-15 00:00:57,349 INFO L125 PetriNetUnfolderBase]: For 42618/42618 co-relation queries the response was YES. [2024-10-15 00:00:57,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44938 conditions, 14419 events. 7236/14419 cut-off events. For 42618/42618 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 122826 event pairs, 215 based on Foata normal form. 738/14144 useless extension candidates. Maximal degree in co-relation 44918. Up to 3430 conditions per place. [2024-10-15 00:00:57,487 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 110 selfloop transitions, 52 changer transitions 0/182 dead transitions. [2024-10-15 00:00:57,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 182 transitions, 1453 flow [2024-10-15 00:00:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 00:00:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-15 00:00:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-10-15 00:00:57,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2024-10-15 00:00:57,490 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 467 flow. Second operand 7 states and 241 transitions. [2024-10-15 00:00:57,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 182 transitions, 1453 flow [2024-10-15 00:00:57,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 182 transitions, 1452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:00:57,548 INFO L231 Difference]: Finished difference. Result has 68 places, 117 transitions, 1168 flow [2024-10-15 00:00:57,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1168, PETRI_PLACES=68, PETRI_TRANSITIONS=117} [2024-10-15 00:00:57,549 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 23 predicate places. [2024-10-15 00:00:57,550 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 117 transitions, 1168 flow [2024-10-15 00:00:57,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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) [2024-10-15 00:00:57,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:57,550 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:57,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 00:00:57,751 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,SelfDestructingSolverStorable6 [2024-10-15 00:00:57,752 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-15 00:00:57,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash -486675324, now seen corresponding path program 1 times [2024-10-15 00:00:57,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:57,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964074322] [2024-10-15 00:00:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:57,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:57,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:57,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964074322] [2024-10-15 00:00:57,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964074322] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:57,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013885556] [2024-10-15 00:00:57,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:57,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:57,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:57,901 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) [2024-10-15 00:00:57,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:00:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:57,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:00:57,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:58,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:58,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013885556] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:58,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:58,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-15 00:00:58,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130707921] [2024-10-15 00:00:58,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:58,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 00:00:58,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:58,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 00:00:58,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-15 00:00:58,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-15 00:00:58,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 117 transitions, 1168 flow. Second operand has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 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) [2024-10-15 00:00:58,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:58,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-15 00:00:58,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:01:03,823 INFO L124 PetriNetUnfolderBase]: 23078/46383 cut-off events. [2024-10-15 00:01:03,823 INFO L125 PetriNetUnfolderBase]: For 345814/345814 co-relation queries the response was YES. [2024-10-15 00:01:04,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162303 conditions, 46383 events. 23078/46383 cut-off events. For 345814/345814 co-relation queries the response was YES. Maximal size of possible extension queue 1431. Compared 459748 event pairs, 457 based on Foata normal form. 5582/48384 useless extension candidates. Maximal degree in co-relation 162278. Up to 7197 conditions per place. [2024-10-15 00:01:04,539 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 189 selfloop transitions, 188 changer transitions 0/397 dead transitions. [2024-10-15 00:01:04,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 397 transitions, 4416 flow [2024-10-15 00:01:04,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 00:01:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-15 00:01:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 393 transitions. [2024-10-15 00:01:04,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.793939393939394 [2024-10-15 00:01:04,542 INFO L175 Difference]: Start difference. First operand has 68 places, 117 transitions, 1168 flow. Second operand 11 states and 393 transitions. [2024-10-15 00:01:04,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 397 transitions, 4416 flow [2024-10-15 00:01:05,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 397 transitions, 4129 flow, removed 142 selfloop flow, removed 1 redundant places. [2024-10-15 00:01:05,171 INFO L231 Difference]: Finished difference. Result has 85 places, 286 transitions, 3961 flow [2024-10-15 00:01:05,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3961, PETRI_PLACES=85, PETRI_TRANSITIONS=286} [2024-10-15 00:01:05,172 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-10-15 00:01:05,172 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 286 transitions, 3961 flow [2024-10-15 00:01:05,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 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) [2024-10-15 00:01:05,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:01:05,173 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:01:05,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 00:01:05,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:01:05,378 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-15 00:01:05,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:01:05,379 INFO L85 PathProgramCache]: Analyzing trace with hash -449800263, now seen corresponding path program 1 times [2024-10-15 00:01:05,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:01:05,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146580795] [2024-10-15 00:01:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:05,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:01:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:01:05,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:01:05,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146580795] [2024-10-15 00:01:05,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146580795] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:01:05,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610063156] [2024-10-15 00:01:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:05,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:01:05,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:01:05,504 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) [2024-10-15 00:01:05,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:01:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:05,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:01:05,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:01:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:05,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:01:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:01:05,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610063156] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:01:05,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:01:05,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 7 [2024-10-15 00:01:05,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853086243] [2024-10-15 00:01:05,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:01:05,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-15 00:01:05,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:01:05,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-15 00:01:05,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2024-10-15 00:01:05,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-15 00:01:05,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 286 transitions, 3961 flow. Second operand has 9 states, 9 states have (on average 21.555555555555557) internal successors, (194), 9 states have internal predecessors, (194), 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) [2024-10-15 00:01:05,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:01:05,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-15 00:01:05,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:01:20,945 INFO L124 PetriNetUnfolderBase]: 51537/102787 cut-off events. [2024-10-15 00:01:20,945 INFO L125 PetriNetUnfolderBase]: For 1155304/1155304 co-relation queries the response was YES. [2024-10-15 00:01:21,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431736 conditions, 102787 events. 51537/102787 cut-off events. For 1155304/1155304 co-relation queries the response was YES. Maximal size of possible extension queue 2881. Compared 1117506 event pairs, 1131 based on Foata normal form. 5404/100359 useless extension candidates. Maximal degree in co-relation 431702. Up to 17078 conditions per place. [2024-10-15 00:01:22,527 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 286 selfloop transitions, 447 changer transitions 0/753 dead transitions. [2024-10-15 00:01:22,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 753 transitions, 11557 flow [2024-10-15 00:01:22,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 00:01:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-15 00:01:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 317 transitions. [2024-10-15 00:01:22,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.782716049382716 [2024-10-15 00:01:22,529 INFO L175 Difference]: Start difference. First operand has 85 places, 286 transitions, 3961 flow. Second operand 9 states and 317 transitions. [2024-10-15 00:01:22,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 753 transitions, 11557 flow [2024-10-15 00:01:30,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 753 transitions, 10804 flow, removed 375 selfloop flow, removed 1 redundant places. [2024-10-15 00:01:30,623 INFO L231 Difference]: Finished difference. Result has 98 places, 646 transitions, 11041 flow [2024-10-15 00:01:30,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11041, PETRI_PLACES=98, PETRI_TRANSITIONS=646} [2024-10-15 00:01:30,625 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2024-10-15 00:01:30,625 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 646 transitions, 11041 flow [2024-10-15 00:01:30,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.555555555555557) internal successors, (194), 9 states have internal predecessors, (194), 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) [2024-10-15 00:01:30,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:01:30,625 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:01:30,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 00:01:30,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:01:30,826 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-15 00:01:30,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:01:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash 207178366, now seen corresponding path program 1 times [2024-10-15 00:01:30,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:01:30,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101074202] [2024-10-15 00:01:30,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:30,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:01:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:30,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:01:30,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101074202] [2024-10-15 00:01:30,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101074202] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:01:30,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112164568] [2024-10-15 00:01:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:30,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:01:30,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:01:30,986 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:01:30,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:01:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:31,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 00:01:31,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:01:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:31,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:01:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:31,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112164568] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:01:31,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:01:31,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-15 00:01:31,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914576484] [2024-10-15 00:01:31,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:01:31,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 00:01:31,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:01:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 00:01:31,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:01:31,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-10-15 00:01:31,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 646 transitions, 11041 flow. Second operand has 15 states, 15 states have (on average 20.8) internal successors, (312), 15 states have internal predecessors, (312), 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) [2024-10-15 00:01:31,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:01:31,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-10-15 00:01:31,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand