./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:13:58,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:13:58,567 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:13:58,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:13:58,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:13:58,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:13:58,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:13:58,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:13:58,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:13:58,609 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:13:58,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:13:58,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:13:58,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:13:58,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:13:58,613 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:13:58,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:13:58,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:13:58,614 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:13:58,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:13:58,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:13:58,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:13:58,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:13:58,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:13:58,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:13:58,616 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:13:58,617 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:13:58,617 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:13:58,617 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:13:58,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:13:58,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:13:58,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:13:58,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:13:58,622 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:13:58,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:13:58,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:13:58,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:13:58,623 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:13:58,623 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:13:58,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:13:58,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:13:58,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:13:58,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:13:58,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:13:58,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:13:58,626 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 [2024-11-09 15:13:58,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:13:58,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:13:58,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:13:58,899 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:13:58,900 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:13:58,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-11-09 15:14:00,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:14:00,522 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:14:00,523 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-11-09 15:14:00,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b7f001ba/a84baab7e0c54e18a550283484d18f47/FLAG0abdc1ca1 [2024-11-09 15:14:00,901 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b7f001ba/a84baab7e0c54e18a550283484d18f47 [2024-11-09 15:14:00,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:14:00,904 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:14:00,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:14:00,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:14:00,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:14:00,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:14:00" (1/1) ... [2024-11-09 15:14:00,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b8abc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:00, skipping insertion in model container [2024-11-09 15:14:00,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:14:00" (1/1) ... [2024-11-09 15:14:00,933 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:14:01,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:14:01,210 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:14:01,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:14:01,265 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:14:01,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01 WrapperNode [2024-11-09 15:14:01,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:14:01,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:14:01,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:14:01,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:14:01,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,307 INFO L138 Inliner]: procedures = 21, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2024-11-09 15:14:01,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:14:01,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:14:01,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:14:01,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:14:01,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,337 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 15:14:01,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:14:01,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:14:01,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:14:01,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:14:01,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (1/1) ... [2024-11-09 15:14:01,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:14:01,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:01,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:14:01,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:14:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:14:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:14:01,441 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:14:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:14:01,441 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:14:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:14:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:14:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 15:14:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 15:14:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:14:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:14:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:14:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:14:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:14:01,445 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:14:01,558 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:14:01,560 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:14:01,835 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:14:01,836 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:14:02,107 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:14:02,108 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 15:14:02,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:14:02 BoogieIcfgContainer [2024-11-09 15:14:02,108 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:14:02,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:14:02,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:14:02,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:14:02,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:14:00" (1/3) ... [2024-11-09 15:14:02,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d32a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:14:02, skipping insertion in model container [2024-11-09 15:14:02,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:01" (2/3) ... [2024-11-09 15:14:02,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d32a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:14:02, skipping insertion in model container [2024-11-09 15:14:02,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:14:02" (3/3) ... [2024-11-09 15:14:02,117 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-11-09 15:14:02,134 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:14:02,134 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-09 15:14:02,134 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:14:02,205 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 15:14:02,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 128 flow [2024-11-09 15:14:02,281 INFO L124 PetriNetUnfolderBase]: 4/46 cut-off events. [2024-11-09 15:14:02,283 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 15:14:02,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 4/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 115 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-09 15:14:02,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 128 flow [2024-11-09 15:14:02,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 109 flow [2024-11-09 15:14:02,301 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:14:02,308 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;@3e97d0ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:14:02,309 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-09 15:14:02,314 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:14:02,314 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-11-09 15:14:02,314 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:14:02,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:02,315 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 15:14:02,316 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-09 15:14:02,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:02,323 INFO L85 PathProgramCache]: Analyzing trace with hash 464065349, now seen corresponding path program 1 times [2024-11-09 15:14:02,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:02,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732380908] [2024-11-09 15:14:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:02,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:02,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732380908] [2024-11-09 15:14:02,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732380908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:02,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:02,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:14:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307968299] [2024-11-09 15:14:02,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:02,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:14:02,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:02,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:14:02,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:14:02,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-09 15:14:02,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:02,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:02,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-09 15:14:02,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:05,354 INFO L124 PetriNetUnfolderBase]: 25764/31176 cut-off events. [2024-11-09 15:14:05,354 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2024-11-09 15:14:05,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62441 conditions, 31176 events. 25764/31176 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 2173. Compared 132537 event pairs, 5100 based on Foata normal form. 39/13833 useless extension candidates. Maximal degree in co-relation 58536. Up to 30081 conditions per place. [2024-11-09 15:14:05,619 INFO L140 encePairwiseOnDemand]: 29/50 looper letters, 46 selfloop transitions, 7 changer transitions 1/62 dead transitions. [2024-11-09 15:14:05,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 271 flow [2024-11-09 15:14:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:14:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:14:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-11-09 15:14:05,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2024-11-09 15:14:05,634 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 109 flow. Second operand 3 states and 106 transitions. [2024-11-09 15:14:05,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 271 flow [2024-11-09 15:14:05,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 247 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-09 15:14:05,648 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 161 flow [2024-11-09 15:14:05,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2024-11-09 15:14:05,655 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2024-11-09 15:14:05,655 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 161 flow [2024-11-09 15:14:05,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:05,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:05,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 15:14:05,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:14:05,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-09 15:14:05,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash 464065351, now seen corresponding path program 1 times [2024-11-09 15:14:05,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:05,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243100281] [2024-11-09 15:14:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:05,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:05,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:05,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243100281] [2024-11-09 15:14:05,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243100281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:05,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:05,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:14:05,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362946061] [2024-11-09 15:14:05,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:05,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:14:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:14:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:14:05,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-09 15:14:05,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:05,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:05,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-09 15:14:05,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:08,658 INFO L124 PetriNetUnfolderBase]: 31030/38418 cut-off events. [2024-11-09 15:14:08,658 INFO L125 PetriNetUnfolderBase]: For 2339/2339 co-relation queries the response was YES. [2024-11-09 15:14:08,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103651 conditions, 38418 events. 31030/38418 cut-off events. For 2339/2339 co-relation queries the response was YES. Maximal size of possible extension queue 2973. Compared 188017 event pairs, 12297 based on Foata normal form. 0/17730 useless extension candidates. Maximal degree in co-relation 46525. Up to 26985 conditions per place. [2024-11-09 15:14:09,054 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 65 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-11-09 15:14:09,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 76 transitions, 386 flow [2024-11-09 15:14:09,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:14:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:14:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-09 15:14:09,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-11-09 15:14:09,059 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 161 flow. Second operand 3 states and 102 transitions. [2024-11-09 15:14:09,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 76 transitions, 386 flow [2024-11-09 15:14:09,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:09,064 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 165 flow [2024-11-09 15:14:09,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-11-09 15:14:09,066 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2024-11-09 15:14:09,066 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 165 flow [2024-11-09 15:14:09,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:09,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:09,067 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 15:14:09,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:14:09,067 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-09 15:14:09,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:09,068 INFO L85 PathProgramCache]: Analyzing trace with hash -709779765, now seen corresponding path program 1 times [2024-11-09 15:14:09,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:09,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795698295] [2024-11-09 15:14:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:09,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:09,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:09,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795698295] [2024-11-09 15:14:09,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795698295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:09,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881239356] [2024-11-09 15:14:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:09,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:09,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:09,168 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) [2024-11-09 15:14:09,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:14:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:09,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:14:09,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:09,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:14:09,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881239356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:09,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:14:09,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-09 15:14:09,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981753416] [2024-11-09 15:14:09,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:09,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:09,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:09,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:09,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:14:09,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-09 15:14:09,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:09,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:09,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-09 15:14:09,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:11,752 INFO L124 PetriNetUnfolderBase]: 36670/45828 cut-off events. [2024-11-09 15:14:11,753 INFO L125 PetriNetUnfolderBase]: For 7771/8160 co-relation queries the response was YES. [2024-11-09 15:14:11,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126973 conditions, 45828 events. 36670/45828 cut-off events. For 7771/8160 co-relation queries the response was YES. Maximal size of possible extension queue 3502. Compared 241019 event pairs, 6474 based on Foata normal form. 0/23705 useless extension candidates. Maximal degree in co-relation 36961. Up to 31431 conditions per place. [2024-11-09 15:14:12,115 INFO L140 encePairwiseOnDemand]: 31/50 looper letters, 46 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2024-11-09 15:14:12,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 405 flow [2024-11-09 15:14:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:12,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-11-09 15:14:12,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-09 15:14:12,118 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 165 flow. Second operand 4 states and 114 transitions. [2024-11-09 15:14:12,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 405 flow [2024-11-09 15:14:12,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:12,127 INFO L231 Difference]: Finished difference. Result has 51 places, 62 transitions, 351 flow [2024-11-09 15:14:12,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=51, PETRI_TRANSITIONS=62} [2024-11-09 15:14:12,129 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2024-11-09 15:14:12,129 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 62 transitions, 351 flow [2024-11-09 15:14:12,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:12,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:12,130 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 15:14:12,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:12,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:12,331 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-09 15:14:12,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:12,332 INFO L85 PathProgramCache]: Analyzing trace with hash -709779764, now seen corresponding path program 1 times [2024-11-09 15:14:12,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:12,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909034272] [2024-11-09 15:14:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:12,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:12,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:12,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909034272] [2024-11-09 15:14:12,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909034272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492927182] [2024-11-09 15:14:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:12,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:12,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:12,395 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) [2024-11-09 15:14:12,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:14:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:12,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:14:12,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:12,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:12,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492927182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:12,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:12,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-09 15:14:12,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767208218] [2024-11-09 15:14:12,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:12,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 15:14:12,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:12,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 15:14:12,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:14:12,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-09 15:14:12,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 62 transitions, 351 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:12,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:12,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-09 15:14:12,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:18,655 INFO L124 PetriNetUnfolderBase]: 79612/101219 cut-off events. [2024-11-09 15:14:18,656 INFO L125 PetriNetUnfolderBase]: For 71117/72523 co-relation queries the response was YES. [2024-11-09 15:14:18,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374601 conditions, 101219 events. 79612/101219 cut-off events. For 71117/72523 co-relation queries the response was YES. Maximal size of possible extension queue 5787. Compared 582781 event pairs, 5104 based on Foata normal form. 9996/72698 useless extension candidates. Maximal degree in co-relation 182925. Up to 64900 conditions per place. [2024-11-09 15:14:19,452 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 117 selfloop transitions, 52 changer transitions 0/177 dead transitions. [2024-11-09 15:14:19,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 177 transitions, 1287 flow [2024-11-09 15:14:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-11-09 15:14:19,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2024-11-09 15:14:19,455 INFO L175 Difference]: Start difference. First operand has 51 places, 62 transitions, 351 flow. Second operand 6 states and 224 transitions. [2024-11-09 15:14:19,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 177 transitions, 1287 flow [2024-11-09 15:14:19,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 177 transitions, 1174 flow, removed 56 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:19,507 INFO L231 Difference]: Finished difference. Result has 59 places, 109 transitions, 928 flow [2024-11-09 15:14:19,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=928, PETRI_PLACES=59, PETRI_TRANSITIONS=109} [2024-11-09 15:14:19,509 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-11-09 15:14:19,509 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 109 transitions, 928 flow [2024-11-09 15:14:19,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:19,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:19,509 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 15:14:19,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:19,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 15:14:19,711 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-09 15:14:19,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash -709779762, now seen corresponding path program 1 times [2024-11-09 15:14:19,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:19,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432011672] [2024-11-09 15:14:19,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:19,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:19,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:19,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:19,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432011672] [2024-11-09 15:14:19,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432011672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:19,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157316635] [2024-11-09 15:14:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:19,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:19,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:19,767 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) [2024-11-09 15:14:19,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:14:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:19,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:14:19,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:19,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:19,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157316635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:19,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:19,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-09 15:14:19,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320754818] [2024-11-09 15:14:19,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:19,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 15:14:19,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:19,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 15:14:19,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 15:14:19,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-09 15:14:19,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 109 transitions, 928 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:19,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:19,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-09 15:14:19,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:35,587 INFO L124 PetriNetUnfolderBase]: 163657/207735 cut-off events. [2024-11-09 15:14:35,587 INFO L125 PetriNetUnfolderBase]: For 321648/321648 co-relation queries the response was YES. [2024-11-09 15:14:36,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922359 conditions, 207735 events. 163657/207735 cut-off events. For 321648/321648 co-relation queries the response was YES. Maximal size of possible extension queue 11085. Compared 1274818 event pairs, 21638 based on Foata normal form. 0/134520 useless extension candidates. Maximal degree in co-relation 597335. Up to 71130 conditions per place. [2024-11-09 15:14:37,430 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 414 selfloop transitions, 58 changer transitions 0/480 dead transitions. [2024-11-09 15:14:37,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 480 transitions, 5001 flow [2024-11-09 15:14:37,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:14:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:14:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2024-11-09 15:14:37,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7314285714285714 [2024-11-09 15:14:37,432 INFO L175 Difference]: Start difference. First operand has 59 places, 109 transitions, 928 flow. Second operand 7 states and 256 transitions. [2024-11-09 15:14:37,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 480 transitions, 5001 flow [2024-11-09 15:14:50,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 480 transitions, 4889 flow, removed 56 selfloop flow, removed 0 redundant places. [2024-11-09 15:14:50,838 INFO L231 Difference]: Finished difference. Result has 68 places, 151 transitions, 1574 flow [2024-11-09 15:14:50,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1574, PETRI_PLACES=68, PETRI_TRANSITIONS=151} [2024-11-09 15:14:50,841 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-11-09 15:14:50,842 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 151 transitions, 1574 flow [2024-11-09 15:14:50,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:50,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:50,842 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 15:14:50,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:51,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:51,047 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-09 15:14:51,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:51,047 INFO L85 PathProgramCache]: Analyzing trace with hash -709779763, now seen corresponding path program 1 times [2024-11-09 15:14:51,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:51,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064367725] [2024-11-09 15:14:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:51,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:51,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:51,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064367725] [2024-11-09 15:14:51,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064367725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:51,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550847881] [2024-11-09 15:14:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:51,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:51,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:51,092 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) [2024-11-09 15:14:51,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:14:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:51,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:14:51,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:51,165 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:14:51,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550847881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:51,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:14:51,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-09 15:14:51,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792824705] [2024-11-09 15:14:51,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:51,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:51,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:51,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:14:51,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-09 15:14:51,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 151 transitions, 1574 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:51,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:51,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-09 15:14:51,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand