./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-symm.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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:55:24,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:55:24,525 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:55:24,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:55:24,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:55:24,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:55:24,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:55:24,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:55:24,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:55:24,558 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:55:24,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:55:24,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:55:24,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:55:24,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:55:24,561 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:55:24,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:55:24,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:55:24,561 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:55:24,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:55:24,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:55:24,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:55:24,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:55:24,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:55:24,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:55:24,564 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:55:24,564 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:55:24,564 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:55:24,565 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:55:24,565 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:55:24,565 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:55:24,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:55:24,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:55:24,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:55:24,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:55:24,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:55:24,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:55:24,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:55:24,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:55:24,566 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:55:24,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:55:24,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:55:24,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:55:24,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:55:24,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:55:24,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2024-11-23 01:55:24,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:55:24,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:55:24,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:55:24,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:55:24,793 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:55:24,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-11-23 01:55:25,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:55:26,137 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:55:26,138 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-11-23 01:55:26,144 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2999aef93/fcd640ed82964beb98d4b02af1ef8bb5/FLAG16240b07b [2024-11-23 01:55:26,154 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2999aef93/fcd640ed82964beb98d4b02af1ef8bb5 [2024-11-23 01:55:26,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:55:26,157 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:55:26,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:55:26,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:55:26,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:55:26,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7658ae01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26, skipping insertion in model container [2024-11-23 01:55:26,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,188 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:55:26,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:55:26,369 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:55:26,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:55:26,424 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:55:26,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26 WrapperNode [2024-11-23 01:55:26,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:55:26,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:55:26,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:55:26,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:55:26,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,470 INFO L138 Inliner]: procedures = 24, calls = 25, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 257 [2024-11-23 01:55:26,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:55:26,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:55:26,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:55:26,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:55:26,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,496 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,510 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-23 01:55:26,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,516 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:55:26,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:55:26,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:55:26,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:55:26,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (1/1) ... [2024-11-23 01:55:26,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:55:26,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:26,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:55:26,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:55:26,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:55:26,620 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 01:55:26,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 01:55:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 01:55:26,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 01:55:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:55:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:55:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:55:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:55:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:55:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:55:26,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:55:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:55:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:55:26,623 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:55:26,727 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:55:26,729 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:55:27,064 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:55:27,064 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:55:27,292 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:55:27,293 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 01:55:27,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:27 BoogieIcfgContainer [2024-11-23 01:55:27,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:55:27,296 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:55:27,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:55:27,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:55:27,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:55:26" (1/3) ... [2024-11-23 01:55:27,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f19fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:27, skipping insertion in model container [2024-11-23 01:55:27,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:26" (2/3) ... [2024-11-23 01:55:27,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f19fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:27, skipping insertion in model container [2024-11-23 01:55:27,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:27" (3/3) ... [2024-11-23 01:55:27,303 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2024-11-23 01:55:27,317 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:55:27,318 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-23 01:55:27,318 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:55:27,403 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 01:55:27,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 81 transitions, 176 flow [2024-11-23 01:55:27,462 INFO L124 PetriNetUnfolderBase]: 11/79 cut-off events. [2024-11-23 01:55:27,463 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 01:55:27,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 11/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 247 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-23 01:55:27,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 81 transitions, 176 flow [2024-11-23 01:55:27,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 78 transitions, 168 flow [2024-11-23 01:55:27,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:55:27,482 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;@61d85bb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:55:27,482 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-23 01:55:27,485 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:55:27,485 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 01:55:27,485 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:55:27,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:27,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:55:27,486 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:27,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash 755936, now seen corresponding path program 1 times [2024-11-23 01:55:27,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:27,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260543697] [2024-11-23 01:55:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:27,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:27,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:27,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260543697] [2024-11-23 01:55:27,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260543697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:27,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:27,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:55:27,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866464981] [2024-11-23 01:55:27,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:27,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:27,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:27,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:27,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-23 01:55:27,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:27,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:27,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-23 01:55:27,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:28,062 INFO L124 PetriNetUnfolderBase]: 595/1422 cut-off events. [2024-11-23 01:55:28,062 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-23 01:55:28,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 1422 events. 595/1422 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9413 event pairs, 390 based on Foata normal form. 3/1100 useless extension candidates. Maximal degree in co-relation 2283. Up to 906 conditions per place. [2024-11-23 01:55:28,076 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 34 selfloop transitions, 4 changer transitions 2/73 dead transitions. [2024-11-23 01:55:28,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 73 transitions, 236 flow [2024-11-23 01:55:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:28,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:28,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-11-23 01:55:28,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5802469135802469 [2024-11-23 01:55:28,089 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 168 flow. Second operand 4 states and 188 transitions. [2024-11-23 01:55:28,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 73 transitions, 236 flow [2024-11-23 01:55:28,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:28,096 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 153 flow [2024-11-23 01:55:28,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-11-23 01:55:28,102 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-11-23 01:55:28,102 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 153 flow [2024-11-23 01:55:28,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:28,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:28,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 01:55:28,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:55:28,103 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:28,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:28,104 INFO L85 PathProgramCache]: Analyzing trace with hash 23434778, now seen corresponding path program 1 times [2024-11-23 01:55:28,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:28,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322508828] [2024-11-23 01:55:28,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:28,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:28,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:28,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322508828] [2024-11-23 01:55:28,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322508828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:28,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:28,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:55:28,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379751544] [2024-11-23 01:55:28,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:28,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:28,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:28,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:28,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-23 01:55:28,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:28,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:28,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-23 01:55:28,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:28,390 INFO L124 PetriNetUnfolderBase]: 596/1424 cut-off events. [2024-11-23 01:55:28,391 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-23 01:55:28,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2357 conditions, 1424 events. 596/1424 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9407 event pairs, 390 based on Foata normal form. 1/1100 useless extension candidates. Maximal degree in co-relation 2329. Up to 910 conditions per place. [2024-11-23 01:55:28,397 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 37 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-11-23 01:55:28,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 247 flow [2024-11-23 01:55:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-23 01:55:28,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-23 01:55:28,399 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 153 flow. Second operand 4 states and 186 transitions. [2024-11-23 01:55:28,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 247 flow [2024-11-23 01:55:28,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 74 transitions, 233 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:55:28,402 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 172 flow [2024-11-23 01:55:28,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-11-23 01:55:28,403 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-11-23 01:55:28,403 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 172 flow [2024-11-23 01:55:28,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:28,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:28,404 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 01:55:28,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:55:28,404 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:28,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:28,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1933404232, now seen corresponding path program 1 times [2024-11-23 01:55:28,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:28,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267971377] [2024-11-23 01:55:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:28,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:28,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:28,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267971377] [2024-11-23 01:55:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267971377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:28,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001172801] [2024-11-23 01:55:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:28,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:28,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:28,496 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) [2024-11-23 01:55:28,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:55:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:28,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:55:28,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:28,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:55:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:28,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001172801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:55:28,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:55:28,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-23 01:55:28,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455760981] [2024-11-23 01:55:28,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:55:28,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:55:28,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:28,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:55:28,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:55:28,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-23 01:55:28,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 172 flow. Second operand has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:28,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:28,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-23 01:55:28,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:28,880 INFO L124 PetriNetUnfolderBase]: 599/1436 cut-off events. [2024-11-23 01:55:28,881 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-23 01:55:28,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 1436 events. 599/1436 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9512 event pairs, 390 based on Foata normal form. 0/1108 useless extension candidates. Maximal degree in co-relation 2336. Up to 913 conditions per place. [2024-11-23 01:55:28,889 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 37 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2024-11-23 01:55:28,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 308 flow [2024-11-23 01:55:28,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:55:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:55:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 413 transitions. [2024-11-23 01:55:28,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5098765432098765 [2024-11-23 01:55:28,893 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 172 flow. Second operand 10 states and 413 transitions. [2024-11-23 01:55:28,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 308 flow [2024-11-23 01:55:28,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:55:28,895 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 249 flow [2024-11-23 01:55:28,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-11-23 01:55:28,896 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2024-11-23 01:55:28,896 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 249 flow [2024-11-23 01:55:28,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:28,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:28,897 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:28,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:55:29,097 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 [2024-11-23 01:55:29,098 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:29,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:29,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1814705083, now seen corresponding path program 1 times [2024-11-23 01:55:29,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:29,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765289816] [2024-11-23 01:55:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:29,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:29,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:29,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765289816] [2024-11-23 01:55:29,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765289816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:29,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:29,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:55:29,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153739789] [2024-11-23 01:55:29,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:29,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:29,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:29,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:29,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:29,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-23 01:55:29,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:29,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:29,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-23 01:55:29,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:29,439 INFO L124 PetriNetUnfolderBase]: 1243/2844 cut-off events. [2024-11-23 01:55:29,440 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-23 01:55:29,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4816 conditions, 2844 events. 1243/2844 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21263 event pairs, 486 based on Foata normal form. 28/2265 useless extension candidates. Maximal degree in co-relation 4780. Up to 1042 conditions per place. [2024-11-23 01:55:29,452 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 96 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-11-23 01:55:29,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 131 transitions, 546 flow [2024-11-23 01:55:29,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:29,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-23 01:55:29,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7191358024691358 [2024-11-23 01:55:29,454 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 249 flow. Second operand 4 states and 233 transitions. [2024-11-23 01:55:29,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 131 transitions, 546 flow [2024-11-23 01:55:29,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 516 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-23 01:55:29,459 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 241 flow [2024-11-23 01:55:29,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2024-11-23 01:55:29,460 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2024-11-23 01:55:29,461 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 241 flow [2024-11-23 01:55:29,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:29,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:29,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:29,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:55:29,461 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:29,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2119896660, now seen corresponding path program 1 times [2024-11-23 01:55:29,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:29,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855936785] [2024-11-23 01:55:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:29,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:29,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:29,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855936785] [2024-11-23 01:55:29,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855936785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:29,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:29,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:55:29,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732757874] [2024-11-23 01:55:29,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:29,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:29,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:29,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:29,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:29,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-23 01:55:29,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:29,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:29,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-23 01:55:29,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:29,972 INFO L124 PetriNetUnfolderBase]: 2395/5268 cut-off events. [2024-11-23 01:55:29,972 INFO L125 PetriNetUnfolderBase]: For 473/547 co-relation queries the response was YES. [2024-11-23 01:55:29,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9301 conditions, 5268 events. 2395/5268 cut-off events. For 473/547 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 42873 event pairs, 1004 based on Foata normal form. 52/4351 useless extension candidates. Maximal degree in co-relation 9267. Up to 2071 conditions per place. [2024-11-23 01:55:29,994 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 99 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-11-23 01:55:29,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 134 transitions, 573 flow [2024-11-23 01:55:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2024-11-23 01:55:29,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2024-11-23 01:55:29,996 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 241 flow. Second operand 4 states and 230 transitions. [2024-11-23 01:55:29,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 134 transitions, 573 flow [2024-11-23 01:55:30,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 134 transitions, 567 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:55:30,002 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 261 flow [2024-11-23 01:55:30,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-11-23 01:55:30,002 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2024-11-23 01:55:30,002 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 261 flow [2024-11-23 01:55:30,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:30,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:30,003 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:30,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:55:30,005 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:30,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:30,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1126064715, now seen corresponding path program 1 times [2024-11-23 01:55:30,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:30,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541124463] [2024-11-23 01:55:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:30,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:55:30,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:30,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541124463] [2024-11-23 01:55:30,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541124463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:30,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:30,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:55:30,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597708959] [2024-11-23 01:55:30,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:30,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:30,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:30,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:30,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-23 01:55:30,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:30,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:30,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-23 01:55:30,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:30,401 INFO L124 PetriNetUnfolderBase]: 1925/4173 cut-off events. [2024-11-23 01:55:30,401 INFO L125 PetriNetUnfolderBase]: For 615/681 co-relation queries the response was YES. [2024-11-23 01:55:30,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 4173 events. 1925/4173 cut-off events. For 615/681 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 31837 event pairs, 754 based on Foata normal form. 0/3624 useless extension candidates. Maximal degree in co-relation 7901. Up to 1687 conditions per place. [2024-11-23 01:55:30,417 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 108 selfloop transitions, 4 changer transitions 6/152 dead transitions. [2024-11-23 01:55:30,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 152 transitions, 674 flow [2024-11-23 01:55:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:55:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:55:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 289 transitions. [2024-11-23 01:55:30,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7135802469135802 [2024-11-23 01:55:30,419 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 261 flow. Second operand 5 states and 289 transitions. [2024-11-23 01:55:30,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 152 transitions, 674 flow [2024-11-23 01:55:30,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 152 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:55:30,422 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 284 flow [2024-11-23 01:55:30,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2024-11-23 01:55:30,423 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2024-11-23 01:55:30,423 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 284 flow [2024-11-23 01:55:30,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:30,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:30,423 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:30,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:55:30,424 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:30,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:30,424 INFO L85 PathProgramCache]: Analyzing trace with hash -513898147, now seen corresponding path program 1 times [2024-11-23 01:55:30,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:30,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85162744] [2024-11-23 01:55:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:30,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:30,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:30,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85162744] [2024-11-23 01:55:30,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85162744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:30,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:30,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:55:30,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335287142] [2024-11-23 01:55:30,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:30,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:55:30,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:30,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:55:30,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:55:30,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-23 01:55:30,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:30,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:30,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-23 01:55:30,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:30,745 INFO L124 PetriNetUnfolderBase]: 1832/4355 cut-off events. [2024-11-23 01:55:30,745 INFO L125 PetriNetUnfolderBase]: For 1245/1279 co-relation queries the response was YES. [2024-11-23 01:55:30,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8438 conditions, 4355 events. 1832/4355 cut-off events. For 1245/1279 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35297 event pairs, 1375 based on Foata normal form. 1/3721 useless extension candidates. Maximal degree in co-relation 8404. Up to 2865 conditions per place. [2024-11-23 01:55:30,768 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 52 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-11-23 01:55:30,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 388 flow [2024-11-23 01:55:30,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:55:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:55:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-11-23 01:55:30,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6337448559670782 [2024-11-23 01:55:30,769 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 284 flow. Second operand 3 states and 154 transitions. [2024-11-23 01:55:30,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 388 flow [2024-11-23 01:55:30,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:55:30,775 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 284 flow [2024-11-23 01:55:30,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2024-11-23 01:55:30,777 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2024-11-23 01:55:30,777 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 284 flow [2024-11-23 01:55:30,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:30,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:30,778 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:30,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:55:30,778 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:30,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1099438591, now seen corresponding path program 1 times [2024-11-23 01:55:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:30,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138834485] [2024-11-23 01:55:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:30,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:30,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:30,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138834485] [2024-11-23 01:55:30,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138834485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:30,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317876188] [2024-11-23 01:55:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:30,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:30,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:30,845 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) [2024-11-23 01:55:30,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:55:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:30,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:55:30,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:30,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:55:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 01:55:30,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317876188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:55:30,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:55:30,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-23 01:55:30,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663439675] [2024-11-23 01:55:30,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:55:30,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:55:30,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:30,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:55:30,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:55:31,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-23 01:55:31,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 284 flow. Second operand has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:31,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:31,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-23 01:55:31,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:31,447 INFO L124 PetriNetUnfolderBase]: 1830/4353 cut-off events. [2024-11-23 01:55:31,447 INFO L125 PetriNetUnfolderBase]: For 1251/1285 co-relation queries the response was YES. [2024-11-23 01:55:31,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8436 conditions, 4353 events. 1830/4353 cut-off events. For 1251/1285 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35279 event pairs, 1375 based on Foata normal form. 2/3720 useless extension candidates. Maximal degree in co-relation 8408. Up to 2857 conditions per place. [2024-11-23 01:55:31,460 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 43 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-11-23 01:55:31,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 86 transitions, 382 flow [2024-11-23 01:55:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:55:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:55:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 297 transitions. [2024-11-23 01:55:31,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-23 01:55:31,461 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 284 flow. Second operand 7 states and 297 transitions. [2024-11-23 01:55:31,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 86 transitions, 382 flow [2024-11-23 01:55:31,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 86 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:55:31,464 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 292 flow [2024-11-23 01:55:31,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-11-23 01:55:31,465 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2024-11-23 01:55:31,465 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 292 flow [2024-11-23 01:55:31,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:31,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:31,466 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-23 01:55:31,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:31,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-23 01:55:31,666 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:31,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:31,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1023767398, now seen corresponding path program 2 times [2024-11-23 01:55:31,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:31,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665752773] [2024-11-23 01:55:31,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:55:31,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:31,682 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:55:31,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:55:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:55:31,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665752773] [2024-11-23 01:55:31,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665752773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:31,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075108342] [2024-11-23 01:55:31,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:55:31,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:31,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:31,705 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) [2024-11-23 01:55:31,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:55:31,756 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:55:31,757 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:55:31,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:55:31,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:55:31,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:55:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:55:31,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075108342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:55:31,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:55:31,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-23 01:55:31,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135560630] [2024-11-23 01:55:31,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:55:31,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:55:31,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:55:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 01:55:31,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-23 01:55:31,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:31,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:31,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-23 01:55:31,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:32,105 INFO L124 PetriNetUnfolderBase]: 1830/4352 cut-off events. [2024-11-23 01:55:32,105 INFO L125 PetriNetUnfolderBase]: For 1260/1294 co-relation queries the response was YES. [2024-11-23 01:55:32,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8438 conditions, 4352 events. 1830/4352 cut-off events. For 1260/1294 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35269 event pairs, 1375 based on Foata normal form. 1/3719 useless extension candidates. Maximal degree in co-relation 8404. Up to 2854 conditions per place. [2024-11-23 01:55:32,122 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 39 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-11-23 01:55:32,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 85 transitions, 386 flow [2024-11-23 01:55:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-11-23 01:55:32,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-11-23 01:55:32,123 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 292 flow. Second operand 4 states and 182 transitions. [2024-11-23 01:55:32,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 85 transitions, 386 flow [2024-11-23 01:55:32,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 85 transitions, 368 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-23 01:55:32,128 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 290 flow [2024-11-23 01:55:32,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2024-11-23 01:55:32,129 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2024-11-23 01:55:32,129 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 290 flow [2024-11-23 01:55:32,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:32,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:32,130 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:32,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:32,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:32,331 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:32,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1628619457, now seen corresponding path program 2 times [2024-11-23 01:55:32,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:32,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598710082] [2024-11-23 01:55:32,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:55:32,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:32,350 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:55:32,350 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:55:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:32,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:32,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598710082] [2024-11-23 01:55:32,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598710082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:32,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848940744] [2024-11-23 01:55:32,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:55:32,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:32,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:32,425 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) [2024-11-23 01:55:32,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:55:32,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:55:32,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:55:32,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:55:32,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:32,513 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:32,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848940744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:32,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:32,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-23 01:55:32,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838761037] [2024-11-23 01:55:32,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:32,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:55:32,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:32,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:55:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-23 01:55:32,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-23 01:55:32,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:32,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:32,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-23 01:55:32,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:32,795 INFO L124 PetriNetUnfolderBase]: 2121/4628 cut-off events. [2024-11-23 01:55:32,796 INFO L125 PetriNetUnfolderBase]: For 1160/1176 co-relation queries the response was YES. [2024-11-23 01:55:32,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9249 conditions, 4628 events. 2121/4628 cut-off events. For 1160/1176 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 35745 event pairs, 1273 based on Foata normal form. 52/4008 useless extension candidates. Maximal degree in co-relation 9178. Up to 2638 conditions per place. [2024-11-23 01:55:32,814 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 68 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-11-23 01:55:32,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 103 transitions, 483 flow [2024-11-23 01:55:32,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-11-23 01:55:32,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6080246913580247 [2024-11-23 01:55:32,815 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 290 flow. Second operand 4 states and 197 transitions. [2024-11-23 01:55:32,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 103 transitions, 483 flow [2024-11-23 01:55:32,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 103 transitions, 457 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:55:32,820 INFO L231 Difference]: Finished difference. Result has 92 places, 84 transitions, 270 flow [2024-11-23 01:55:32,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=92, PETRI_TRANSITIONS=84} [2024-11-23 01:55:32,821 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 18 predicate places. [2024-11-23 01:55:32,821 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 84 transitions, 270 flow [2024-11-23 01:55:32,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:32,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:32,821 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:32,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 01:55:33,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:33,022 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:33,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:33,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1052405208, now seen corresponding path program 1 times [2024-11-23 01:55:33,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:33,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668077227] [2024-11-23 01:55:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:33,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:33,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:33,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668077227] [2024-11-23 01:55:33,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668077227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:33,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:33,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:55:33,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341070084] [2024-11-23 01:55:33,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:33,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:55:33,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:33,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:55:33,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:55:33,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-23 01:55:33,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 84 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:33,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:33,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-23 01:55:33,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:33,407 INFO L124 PetriNetUnfolderBase]: 1854/4293 cut-off events. [2024-11-23 01:55:33,407 INFO L125 PetriNetUnfolderBase]: For 1884/1892 co-relation queries the response was YES. [2024-11-23 01:55:33,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8580 conditions, 4293 events. 1854/4293 cut-off events. For 1884/1892 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 33903 event pairs, 1249 based on Foata normal form. 52/3753 useless extension candidates. Maximal degree in co-relation 8520. Up to 2639 conditions per place. [2024-11-23 01:55:33,425 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 67 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-23 01:55:33,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 102 transitions, 459 flow [2024-11-23 01:55:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:55:33,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:55:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-23 01:55:33,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707818930041153 [2024-11-23 01:55:33,427 INFO L175 Difference]: Start difference. First operand has 92 places, 84 transitions, 270 flow. Second operand 3 states and 163 transitions. [2024-11-23 01:55:33,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 102 transitions, 459 flow [2024-11-23 01:55:33,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 102 transitions, 449 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:55:33,431 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 264 flow [2024-11-23 01:55:33,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-23 01:55:33,432 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2024-11-23 01:55:33,432 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 264 flow [2024-11-23 01:55:33,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:33,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:33,433 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:33,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 01:55:33,433 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:33,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:33,433 INFO L85 PathProgramCache]: Analyzing trace with hash -839160949, now seen corresponding path program 1 times [2024-11-23 01:55:33,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:33,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278526016] [2024-11-23 01:55:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:33,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:33,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278526016] [2024-11-23 01:55:33,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278526016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:33,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:33,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:55:33,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19523349] [2024-11-23 01:55:33,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:33,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:33,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:33,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:33,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:55:33,476 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-23 01:55:33,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:33,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:33,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-23 01:55:33,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:33,739 INFO L124 PetriNetUnfolderBase]: 1579/3454 cut-off events. [2024-11-23 01:55:33,740 INFO L125 PetriNetUnfolderBase]: For 1689/1697 co-relation queries the response was YES. [2024-11-23 01:55:33,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 3454 events. 1579/3454 cut-off events. For 1689/1697 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 24211 event pairs, 719 based on Foata normal form. 0/3103 useless extension candidates. Maximal degree in co-relation 7241. Up to 1483 conditions per place. [2024-11-23 01:55:33,788 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 102 selfloop transitions, 4 changer transitions 12/149 dead transitions. [2024-11-23 01:55:33,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 149 transitions, 758 flow [2024-11-23 01:55:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:55:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:55:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 284 transitions. [2024-11-23 01:55:33,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7012345679012346 [2024-11-23 01:55:33,790 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 264 flow. Second operand 5 states and 284 transitions. [2024-11-23 01:55:33,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 149 transitions, 758 flow [2024-11-23 01:55:33,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 149 transitions, 726 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:55:33,793 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 281 flow [2024-11-23 01:55:33,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2024-11-23 01:55:33,794 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2024-11-23 01:55:33,794 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 281 flow [2024-11-23 01:55:33,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:33,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:33,794 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:33,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 01:55:33,794 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:33,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:33,795 INFO L85 PathProgramCache]: Analyzing trace with hash -209815962, now seen corresponding path program 1 times [2024-11-23 01:55:33,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:33,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905037843] [2024-11-23 01:55:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:33,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:33,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:33,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905037843] [2024-11-23 01:55:33,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905037843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:33,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873498061] [2024-11-23 01:55:33,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:33,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:33,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:33,859 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) [2024-11-23 01:55:33,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 01:55:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:33,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:55:33,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:33,945 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:33,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873498061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:33,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:33,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:55:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882412153] [2024-11-23 01:55:33,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:33,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:55:33,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:55:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:33,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-23 01:55:33,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 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) [2024-11-23 01:55:33,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:33,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-23 01:55:33,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:34,288 INFO L124 PetriNetUnfolderBase]: 1668/3471 cut-off events. [2024-11-23 01:55:34,289 INFO L125 PetriNetUnfolderBase]: For 1768/1768 co-relation queries the response was YES. [2024-11-23 01:55:34,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7809 conditions, 3471 events. 1668/3471 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 23481 event pairs, 77 based on Foata normal form. 47/3211 useless extension candidates. Maximal degree in co-relation 7748. Up to 1461 conditions per place. [2024-11-23 01:55:34,302 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 133 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2024-11-23 01:55:34,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 167 transitions, 855 flow [2024-11-23 01:55:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:55:34,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:55:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 326 transitions. [2024-11-23 01:55:34,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707818930041153 [2024-11-23 01:55:34,303 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 281 flow. Second operand 6 states and 326 transitions. [2024-11-23 01:55:34,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 167 transitions, 855 flow [2024-11-23 01:55:34,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 167 transitions, 855 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:55:34,308 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 287 flow [2024-11-23 01:55:34,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-11-23 01:55:34,309 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2024-11-23 01:55:34,309 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 287 flow [2024-11-23 01:55:34,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 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) [2024-11-23 01:55:34,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:34,310 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:34,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 01:55:34,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 01:55:34,514 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:34,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:34,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2043007611, now seen corresponding path program 1 times [2024-11-23 01:55:34,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:34,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772859669] [2024-11-23 01:55:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:34,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:34,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772859669] [2024-11-23 01:55:34,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772859669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303082009] [2024-11-23 01:55:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:34,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:34,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:34,579 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:34,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 01:55:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:34,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 01:55:34,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:34,669 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:34,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303082009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:34,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:34,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-23 01:55:34,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289599505] [2024-11-23 01:55:34,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:34,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:34,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:34,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:34,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-23 01:55:34,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 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) [2024-11-23 01:55:34,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:34,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-23 01:55:34,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:35,039 INFO L124 PetriNetUnfolderBase]: 2052/4520 cut-off events. [2024-11-23 01:55:35,040 INFO L125 PetriNetUnfolderBase]: For 2967/2981 co-relation queries the response was YES. [2024-11-23 01:55:35,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9903 conditions, 4520 events. 2052/4520 cut-off events. For 2967/2981 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 33454 event pairs, 1243 based on Foata normal form. 92/4135 useless extension candidates. Maximal degree in co-relation 9841. Up to 2440 conditions per place. [2024-11-23 01:55:35,058 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 119 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2024-11-23 01:55:35,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 150 transitions, 801 flow [2024-11-23 01:55:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:55:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:55:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 264 transitions. [2024-11-23 01:55:35,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-11-23 01:55:35,060 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 287 flow. Second operand 5 states and 264 transitions. [2024-11-23 01:55:35,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 150 transitions, 801 flow [2024-11-23 01:55:35,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 150 transitions, 765 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:35,064 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 314 flow [2024-11-23 01:55:35,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2024-11-23 01:55:35,065 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2024-11-23 01:55:35,065 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 314 flow [2024-11-23 01:55:35,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 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) [2024-11-23 01:55:35,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:35,065 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:35,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 01:55:35,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:35,267 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:35,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:35,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2085640624, now seen corresponding path program 1 times [2024-11-23 01:55:35,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:35,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353514579] [2024-11-23 01:55:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:35,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:35,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:35,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353514579] [2024-11-23 01:55:35,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353514579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:35,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:55:35,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:55:35,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092880764] [2024-11-23 01:55:35,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:35,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:55:35,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:35,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:55:35,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:55:35,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-23 01:55:35,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:35,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:35,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-23 01:55:35,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:35,597 INFO L124 PetriNetUnfolderBase]: 1737/4045 cut-off events. [2024-11-23 01:55:35,597 INFO L125 PetriNetUnfolderBase]: For 2639/2665 co-relation queries the response was YES. [2024-11-23 01:55:35,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9074 conditions, 4045 events. 1737/4045 cut-off events. For 2639/2665 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 30444 event pairs, 1286 based on Foata normal form. 67/3735 useless extension candidates. Maximal degree in co-relation 9011. Up to 2525 conditions per place. [2024-11-23 01:55:35,610 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 74 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2024-11-23 01:55:35,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 565 flow [2024-11-23 01:55:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:55:35,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:55:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-23 01:55:35,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-23 01:55:35,611 INFO L175 Difference]: Start difference. First operand has 101 places, 86 transitions, 314 flow. Second operand 3 states and 162 transitions. [2024-11-23 01:55:35,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 565 flow [2024-11-23 01:55:35,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 558 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-23 01:55:35,616 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 312 flow [2024-11-23 01:55:35,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2024-11-23 01:55:35,617 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-11-23 01:55:35,617 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 312 flow [2024-11-23 01:55:35,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:35,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:35,617 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:35,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 01:55:35,617 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:35,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1091272669, now seen corresponding path program 1 times [2024-11-23 01:55:35,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:35,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000414472] [2024-11-23 01:55:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:35,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:35,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:35,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000414472] [2024-11-23 01:55:35,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000414472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:35,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815142353] [2024-11-23 01:55:35,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:35,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:35,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:35,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:35,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 01:55:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:35,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:55:35,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:35,787 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815142353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:35,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:35,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-23 01:55:35,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687384996] [2024-11-23 01:55:35,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:35,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:35,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:35,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-23 01:55:35,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:35,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:35,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-23 01:55:35,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:36,062 INFO L124 PetriNetUnfolderBase]: 1835/4181 cut-off events. [2024-11-23 01:55:36,063 INFO L125 PetriNetUnfolderBase]: For 2893/2897 co-relation queries the response was YES. [2024-11-23 01:55:36,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9545 conditions, 4181 events. 1835/4181 cut-off events. For 2893/2897 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 30944 event pairs, 1060 based on Foata normal form. 50/3874 useless extension candidates. Maximal degree in co-relation 9482. Up to 2026 conditions per place. [2024-11-23 01:55:36,084 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 74 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-23 01:55:36,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 105 transitions, 547 flow [2024-11-23 01:55:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-11-23 01:55:36,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-11-23 01:55:36,086 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 312 flow. Second operand 4 states and 196 transitions. [2024-11-23 01:55:36,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 105 transitions, 547 flow [2024-11-23 01:55:36,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 531 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:55:36,094 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 310 flow [2024-11-23 01:55:36,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2024-11-23 01:55:36,095 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-11-23 01:55:36,096 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 310 flow [2024-11-23 01:55:36,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:36,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:36,096 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:36,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:36,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:36,300 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:36,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash 530254687, now seen corresponding path program 1 times [2024-11-23 01:55:36,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532825398] [2024-11-23 01:55:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:36,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:36,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532825398] [2024-11-23 01:55:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532825398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794509349] [2024-11-23 01:55:36,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:36,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:36,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:36,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:36,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 01:55:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:36,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:55:36,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:36,473 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:36,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794509349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:36,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:36,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-23 01:55:36,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007567018] [2024-11-23 01:55:36,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:36,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:36,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:36,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:36,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:36,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-23 01:55:36,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:36,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:36,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-23 01:55:36,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:36,859 INFO L124 PetriNetUnfolderBase]: 1839/4143 cut-off events. [2024-11-23 01:55:36,859 INFO L125 PetriNetUnfolderBase]: For 2939/2943 co-relation queries the response was YES. [2024-11-23 01:55:36,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9450 conditions, 4143 events. 1839/4143 cut-off events. For 2939/2943 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30319 event pairs, 1060 based on Foata normal form. 50/3836 useless extension candidates. Maximal degree in co-relation 9386. Up to 2026 conditions per place. [2024-11-23 01:55:36,879 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 75 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-11-23 01:55:36,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 104 transitions, 537 flow [2024-11-23 01:55:36,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:36,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-23 01:55:36,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-23 01:55:36,880 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 310 flow. Second operand 4 states and 192 transitions. [2024-11-23 01:55:36,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 104 transitions, 537 flow [2024-11-23 01:55:36,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 529 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:55:36,888 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 306 flow [2024-11-23 01:55:36,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2024-11-23 01:55:36,889 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2024-11-23 01:55:36,889 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 306 flow [2024-11-23 01:55:36,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:36,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:36,889 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:36,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 01:55:37,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 01:55:37,094 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:37,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1450169293, now seen corresponding path program 1 times [2024-11-23 01:55:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:37,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362978360] [2024-11-23 01:55:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:37,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:37,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:37,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362978360] [2024-11-23 01:55:37,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362978360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:37,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609776299] [2024-11-23 01:55:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:37,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:37,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:37,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:37,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 01:55:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:37,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 01:55:37,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:37,262 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:37,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609776299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:37,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:37,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-23 01:55:37,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169835705] [2024-11-23 01:55:37,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:37,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:37,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:37,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-23 01:55:37,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:37,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:37,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-23 01:55:37,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:37,666 INFO L124 PetriNetUnfolderBase]: 2334/5040 cut-off events. [2024-11-23 01:55:37,666 INFO L125 PetriNetUnfolderBase]: For 3348/3378 co-relation queries the response was YES. [2024-11-23 01:55:37,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11418 conditions, 5040 events. 2334/5040 cut-off events. For 3348/3378 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 37370 event pairs, 1423 based on Foata normal form. 132/4710 useless extension candidates. Maximal degree in co-relation 11354. Up to 2766 conditions per place. [2024-11-23 01:55:37,682 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 124 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2024-11-23 01:55:37,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 152 transitions, 884 flow [2024-11-23 01:55:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:55:37,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:55:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 261 transitions. [2024-11-23 01:55:37,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-23 01:55:37,684 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 306 flow. Second operand 5 states and 261 transitions. [2024-11-23 01:55:37,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 152 transitions, 884 flow [2024-11-23 01:55:37,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 858 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:55:37,690 INFO L231 Difference]: Finished difference. Result has 102 places, 85 transitions, 334 flow [2024-11-23 01:55:37,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=102, PETRI_TRANSITIONS=85} [2024-11-23 01:55:37,690 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2024-11-23 01:55:37,690 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 85 transitions, 334 flow [2024-11-23 01:55:37,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:37,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:37,691 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:37,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 01:55:37,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 01:55:37,892 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:37,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash -741974075, now seen corresponding path program 1 times [2024-11-23 01:55:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:37,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561244183] [2024-11-23 01:55:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:37,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:37,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561244183] [2024-11-23 01:55:37,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561244183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:37,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881539788] [2024-11-23 01:55:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:37,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:37,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:37,962 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:37,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 01:55:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:38,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:55:38,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:38,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:38,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881539788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:38,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:38,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-23 01:55:38,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766676471] [2024-11-23 01:55:38,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:38,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:55:38,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:38,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:55:38,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 01:55:38,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-23 01:55:38,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 85 transitions, 334 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:38,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:38,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-23 01:55:38,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:38,451 INFO L124 PetriNetUnfolderBase]: 2191/4929 cut-off events. [2024-11-23 01:55:38,452 INFO L125 PetriNetUnfolderBase]: For 3601/3625 co-relation queries the response was YES. [2024-11-23 01:55:38,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11567 conditions, 4929 events. 2191/4929 cut-off events. For 3601/3625 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 37289 event pairs, 1547 based on Foata normal form. 114/4765 useless extension candidates. Maximal degree in co-relation 11502. Up to 2936 conditions per place. [2024-11-23 01:55:38,471 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 125 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2024-11-23 01:55:38,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 154 transitions, 886 flow [2024-11-23 01:55:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:55:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:55:38,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 288 transitions. [2024-11-23 01:55:38,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-23 01:55:38,473 INFO L175 Difference]: Start difference. First operand has 102 places, 85 transitions, 334 flow. Second operand 6 states and 288 transitions. [2024-11-23 01:55:38,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 154 transitions, 886 flow [2024-11-23 01:55:38,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 154 transitions, 878 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:55:38,484 INFO L231 Difference]: Finished difference. Result has 106 places, 84 transitions, 339 flow [2024-11-23 01:55:38,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=106, PETRI_TRANSITIONS=84} [2024-11-23 01:55:38,485 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 32 predicate places. [2024-11-23 01:55:38,485 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 84 transitions, 339 flow [2024-11-23 01:55:38,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:38,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:38,486 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:38,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 01:55:38,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:38,686 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:38,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:38,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2005574262, now seen corresponding path program 1 times [2024-11-23 01:55:38,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:38,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403797406] [2024-11-23 01:55:38,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:38,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:38,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:38,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403797406] [2024-11-23 01:55:38,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403797406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538397945] [2024-11-23 01:55:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:38,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:38,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:38,760 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:38,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 01:55:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:38,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:55:38,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:38,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:38,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538397945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:38,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:38,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-23 01:55:38,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904365566] [2024-11-23 01:55:38,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:38,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:38,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:38,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:38,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:38,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-23 01:55:38,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 84 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:38,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:38,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-23 01:55:38,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:39,135 INFO L124 PetriNetUnfolderBase]: 2067/4676 cut-off events. [2024-11-23 01:55:39,135 INFO L125 PetriNetUnfolderBase]: For 3759/3783 co-relation queries the response was YES. [2024-11-23 01:55:39,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11191 conditions, 4676 events. 2067/4676 cut-off events. For 3759/3783 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 35320 event pairs, 1200 based on Foata normal form. 75/4463 useless extension candidates. Maximal degree in co-relation 11124. Up to 2314 conditions per place. [2024-11-23 01:55:39,152 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 77 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-23 01:55:39,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 604 flow [2024-11-23 01:55:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:39,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:39,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-23 01:55:39,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2024-11-23 01:55:39,154 INFO L175 Difference]: Start difference. First operand has 106 places, 84 transitions, 339 flow. Second operand 4 states and 195 transitions. [2024-11-23 01:55:39,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 604 flow [2024-11-23 01:55:39,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 105 transitions, 586 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:39,163 INFO L231 Difference]: Finished difference. Result has 104 places, 83 transitions, 334 flow [2024-11-23 01:55:39,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=334, PETRI_PLACES=104, PETRI_TRANSITIONS=83} [2024-11-23 01:55:39,163 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2024-11-23 01:55:39,163 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 83 transitions, 334 flow [2024-11-23 01:55:39,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:39,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:39,164 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:39,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 01:55:39,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:39,364 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:39,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:39,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1526359006, now seen corresponding path program 1 times [2024-11-23 01:55:39,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:39,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979888254] [2024-11-23 01:55:39,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:39,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:39,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:39,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:39,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979888254] [2024-11-23 01:55:39,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979888254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:39,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315789286] [2024-11-23 01:55:39,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:39,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:39,428 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:39,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 01:55:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:39,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:55:39,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:39,551 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:39,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315789286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:39,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:39,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-23 01:55:39,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851468853] [2024-11-23 01:55:39,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:39,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:55:39,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:39,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:55:39,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:55:39,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-23 01:55:39,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 83 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:39,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:39,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-23 01:55:39,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:39,970 INFO L124 PetriNetUnfolderBase]: 2426/5175 cut-off events. [2024-11-23 01:55:39,970 INFO L125 PetriNetUnfolderBase]: For 4277/4323 co-relation queries the response was YES. [2024-11-23 01:55:40,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12643 conditions, 5175 events. 2426/5175 cut-off events. For 4277/4323 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 38021 event pairs, 1200 based on Foata normal form. 124/5099 useless extension candidates. Maximal degree in co-relation 12576. Up to 2351 conditions per place. [2024-11-23 01:55:40,024 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 144 selfloop transitions, 11 changer transitions 0/177 dead transitions. [2024-11-23 01:55:40,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 177 transitions, 1064 flow [2024-11-23 01:55:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:55:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:55:40,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 335 transitions. [2024-11-23 01:55:40,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5908289241622575 [2024-11-23 01:55:40,025 INFO L175 Difference]: Start difference. First operand has 104 places, 83 transitions, 334 flow. Second operand 7 states and 335 transitions. [2024-11-23 01:55:40,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 177 transitions, 1064 flow [2024-11-23 01:55:40,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 177 transitions, 1032 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:55:40,035 INFO L231 Difference]: Finished difference. Result has 109 places, 85 transitions, 366 flow [2024-11-23 01:55:40,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=109, PETRI_TRANSITIONS=85} [2024-11-23 01:55:40,035 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 35 predicate places. [2024-11-23 01:55:40,035 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 85 transitions, 366 flow [2024-11-23 01:55:40,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:40,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:40,035 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:40,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 01:55:40,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 01:55:40,236 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:40,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:40,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2043290889, now seen corresponding path program 1 times [2024-11-23 01:55:40,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:40,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249190501] [2024-11-23 01:55:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:40,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:40,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:40,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249190501] [2024-11-23 01:55:40,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249190501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:40,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266660860] [2024-11-23 01:55:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:40,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:40,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:40,302 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:40,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 01:55:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:40,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:55:40,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:40,409 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:40,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266660860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:40,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:40,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-23 01:55:40,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108255369] [2024-11-23 01:55:40,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:40,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:40,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:40,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:40,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-23 01:55:40,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 85 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:40,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:40,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-23 01:55:40,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:40,698 INFO L124 PetriNetUnfolderBase]: 2184/4860 cut-off events. [2024-11-23 01:55:40,698 INFO L125 PetriNetUnfolderBase]: For 5058/5126 co-relation queries the response was YES. [2024-11-23 01:55:40,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12386 conditions, 4860 events. 2184/4860 cut-off events. For 5058/5126 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 36488 event pairs, 1288 based on Foata normal form. 111/4711 useless extension candidates. Maximal degree in co-relation 12317. Up to 2466 conditions per place. [2024-11-23 01:55:40,717 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 82 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2024-11-23 01:55:40,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 662 flow [2024-11-23 01:55:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-23 01:55:40,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5895061728395061 [2024-11-23 01:55:40,718 INFO L175 Difference]: Start difference. First operand has 109 places, 85 transitions, 366 flow. Second operand 4 states and 191 transitions. [2024-11-23 01:55:40,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 662 flow [2024-11-23 01:55:40,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 644 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:55:40,732 INFO L231 Difference]: Finished difference. Result has 108 places, 84 transitions, 359 flow [2024-11-23 01:55:40,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=359, PETRI_PLACES=108, PETRI_TRANSITIONS=84} [2024-11-23 01:55:40,732 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2024-11-23 01:55:40,732 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 84 transitions, 359 flow [2024-11-23 01:55:40,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:40,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:40,733 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:40,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:40,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-23 01:55:40,933 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:40,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:40,934 INFO L85 PathProgramCache]: Analyzing trace with hash 874829003, now seen corresponding path program 1 times [2024-11-23 01:55:40,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:40,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682607297] [2024-11-23 01:55:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:40,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:41,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682607297] [2024-11-23 01:55:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682607297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378298396] [2024-11-23 01:55:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:41,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:41,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:41,006 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:41,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 01:55:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:41,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 01:55:41,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:41,095 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378298396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:41,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:41,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-23 01:55:41,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829689614] [2024-11-23 01:55:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:41,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:41,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:41,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-23 01:55:41,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 84 transitions, 359 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:41,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:41,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-23 01:55:41,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:41,564 INFO L124 PetriNetUnfolderBase]: 2265/4925 cut-off events. [2024-11-23 01:55:41,565 INFO L125 PetriNetUnfolderBase]: For 5077/5117 co-relation queries the response was YES. [2024-11-23 01:55:41,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12469 conditions, 4925 events. 2265/4925 cut-off events. For 5077/5117 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 36304 event pairs, 1469 based on Foata normal form. 90/4801 useless extension candidates. Maximal degree in co-relation 12400. Up to 2849 conditions per place. [2024-11-23 01:55:41,588 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 124 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2024-11-23 01:55:41,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 152 transitions, 922 flow [2024-11-23 01:55:41,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:55:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:55:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2024-11-23 01:55:41,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6345679012345679 [2024-11-23 01:55:41,589 INFO L175 Difference]: Start difference. First operand has 108 places, 84 transitions, 359 flow. Second operand 5 states and 257 transitions. [2024-11-23 01:55:41,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 152 transitions, 922 flow [2024-11-23 01:55:41,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 152 transitions, 893 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:41,606 INFO L231 Difference]: Finished difference. Result has 107 places, 83 transitions, 354 flow [2024-11-23 01:55:41,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=107, PETRI_TRANSITIONS=83} [2024-11-23 01:55:41,606 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 33 predicate places. [2024-11-23 01:55:41,606 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 83 transitions, 354 flow [2024-11-23 01:55:41,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:41,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:41,607 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:41,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 01:55:41,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:41,807 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:41,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash 874827978, now seen corresponding path program 1 times [2024-11-23 01:55:41,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:41,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887245495] [2024-11-23 01:55:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:41,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:41,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887245495] [2024-11-23 01:55:41,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887245495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:41,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803668394] [2024-11-23 01:55:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:41,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:41,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:41,875 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:41,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 01:55:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:41,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 01:55:41,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:41,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:41,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803668394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:41,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:41,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-23 01:55:41,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951129063] [2024-11-23 01:55:41,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:41,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:41,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:41,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:41,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:41,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-23 01:55:41,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 83 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:41,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:41,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-23 01:55:41,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:42,327 INFO L124 PetriNetUnfolderBase]: 2495/5119 cut-off events. [2024-11-23 01:55:42,327 INFO L125 PetriNetUnfolderBase]: For 4584/4621 co-relation queries the response was YES. [2024-11-23 01:55:42,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13317 conditions, 5119 events. 2495/5119 cut-off events. For 4584/4621 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 36188 event pairs, 1612 based on Foata normal form. 87/4998 useless extension candidates. Maximal degree in co-relation 13249. Up to 3103 conditions per place. [2024-11-23 01:55:42,347 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 99 selfloop transitions, 6 changer transitions 6/130 dead transitions. [2024-11-23 01:55:42,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 130 transitions, 776 flow [2024-11-23 01:55:42,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-11-23 01:55:42,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6604938271604939 [2024-11-23 01:55:42,348 INFO L175 Difference]: Start difference. First operand has 107 places, 83 transitions, 354 flow. Second operand 4 states and 214 transitions. [2024-11-23 01:55:42,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 130 transitions, 776 flow [2024-11-23 01:55:42,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 130 transitions, 754 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-23 01:55:42,362 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 351 flow [2024-11-23 01:55:42,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2024-11-23 01:55:42,363 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2024-11-23 01:55:42,363 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 351 flow [2024-11-23 01:55:42,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:42,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:42,363 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:42,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:42,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:42,564 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:42,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1082491724, now seen corresponding path program 1 times [2024-11-23 01:55:42,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:42,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976739801] [2024-11-23 01:55:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:42,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:42,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976739801] [2024-11-23 01:55:42,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976739801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:42,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082942933] [2024-11-23 01:55:42,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:42,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:42,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:42,633 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:42,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 01:55:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:42,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:55:42,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:42,775 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:42,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082942933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:42,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:42,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-23 01:55:42,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336431277] [2024-11-23 01:55:42,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:42,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:55:42,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:42,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:55:42,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 01:55:42,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-23 01:55:42,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:42,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:42,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-23 01:55:42,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:43,205 INFO L124 PetriNetUnfolderBase]: 2295/4858 cut-off events. [2024-11-23 01:55:43,206 INFO L125 PetriNetUnfolderBase]: For 4733/4785 co-relation queries the response was YES. [2024-11-23 01:55:43,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12503 conditions, 4858 events. 2295/4858 cut-off events. For 4733/4785 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 34922 event pairs, 1668 based on Foata normal form. 146/4848 useless extension candidates. Maximal degree in co-relation 12436. Up to 3141 conditions per place. [2024-11-23 01:55:43,224 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 130 selfloop transitions, 6 changer transitions 0/155 dead transitions. [2024-11-23 01:55:43,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 155 transitions, 991 flow [2024-11-23 01:55:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:55:43,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:55:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2024-11-23 01:55:43,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-11-23 01:55:43,226 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 351 flow. Second operand 6 states and 285 transitions. [2024-11-23 01:55:43,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 155 transitions, 991 flow [2024-11-23 01:55:43,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 155 transitions, 941 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:43,238 INFO L231 Difference]: Finished difference. Result has 107 places, 82 transitions, 344 flow [2024-11-23 01:55:43,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=107, PETRI_TRANSITIONS=82} [2024-11-23 01:55:43,239 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 33 predicate places. [2024-11-23 01:55:43,239 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 82 transitions, 344 flow [2024-11-23 01:55:43,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:43,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:43,243 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:43,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:43,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-23 01:55:43,444 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:43,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:43,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2078365277, now seen corresponding path program 1 times [2024-11-23 01:55:43,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608299100] [2024-11-23 01:55:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:43,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608299100] [2024-11-23 01:55:43,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608299100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328428050] [2024-11-23 01:55:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:43,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:43,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:43,513 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:43,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 01:55:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:43,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 01:55:43,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:43,624 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:43,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328428050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:43,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:43,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-23 01:55:43,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938266333] [2024-11-23 01:55:43,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:43,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:43,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:43,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:43,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:43,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-23 01:55:43,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 82 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:43,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:43,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-23 01:55:43,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:43,963 INFO L124 PetriNetUnfolderBase]: 2225/4729 cut-off events. [2024-11-23 01:55:43,963 INFO L125 PetriNetUnfolderBase]: For 4146/4165 co-relation queries the response was YES. [2024-11-23 01:55:43,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12148 conditions, 4729 events. 2225/4729 cut-off events. For 4146/4165 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 33943 event pairs, 1762 based on Foata normal form. 67/4635 useless extension candidates. Maximal degree in co-relation 12080. Up to 3367 conditions per place. [2024-11-23 01:55:43,980 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 86 selfloop transitions, 3 changer transitions 18/127 dead transitions. [2024-11-23 01:55:43,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 127 transitions, 762 flow [2024-11-23 01:55:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-11-23 01:55:43,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6635802469135802 [2024-11-23 01:55:43,981 INFO L175 Difference]: Start difference. First operand has 107 places, 82 transitions, 344 flow. Second operand 4 states and 215 transitions. [2024-11-23 01:55:43,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 127 transitions, 762 flow [2024-11-23 01:55:43,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 127 transitions, 734 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 01:55:43,995 INFO L231 Difference]: Finished difference. Result has 104 places, 75 transitions, 304 flow [2024-11-23 01:55:43,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=104, PETRI_TRANSITIONS=75} [2024-11-23 01:55:43,996 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2024-11-23 01:55:43,996 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 75 transitions, 304 flow [2024-11-23 01:55:43,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:43,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:43,996 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:44,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-23 01:55:44,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-23 01:55:44,199 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:44,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:44,199 INFO L85 PathProgramCache]: Analyzing trace with hash -802494054, now seen corresponding path program 1 times [2024-11-23 01:55:44,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:44,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346367580] [2024-11-23 01:55:44,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:44,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:44,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346367580] [2024-11-23 01:55:44,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346367580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:44,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550614996] [2024-11-23 01:55:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:44,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:44,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:44,259 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:44,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 01:55:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:44,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:55:44,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:44,389 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:44,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550614996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:44,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:44,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-23 01:55:44,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636614770] [2024-11-23 01:55:44,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:44,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:55:44,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:55:44,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:55:44,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-23 01:55:44,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 75 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:44,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:44,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-23 01:55:44,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:44,750 INFO L124 PetriNetUnfolderBase]: 1861/3997 cut-off events. [2024-11-23 01:55:44,750 INFO L125 PetriNetUnfolderBase]: For 3538/3560 co-relation queries the response was YES. [2024-11-23 01:55:44,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9974 conditions, 3997 events. 1861/3997 cut-off events. For 3538/3560 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 27837 event pairs, 756 based on Foata normal form. 106/4010 useless extension candidates. Maximal degree in co-relation 9908. Up to 1468 conditions per place. [2024-11-23 01:55:44,764 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 146 selfloop transitions, 8 changer transitions 0/172 dead transitions. [2024-11-23 01:55:44,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 172 transitions, 1078 flow [2024-11-23 01:55:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:55:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:55:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 327 transitions. [2024-11-23 01:55:44,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5767195767195767 [2024-11-23 01:55:44,766 INFO L175 Difference]: Start difference. First operand has 104 places, 75 transitions, 304 flow. Second operand 7 states and 327 transitions. [2024-11-23 01:55:44,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 172 transitions, 1078 flow [2024-11-23 01:55:44,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 172 transitions, 1018 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-23 01:55:44,775 INFO L231 Difference]: Finished difference. Result has 100 places, 76 transitions, 310 flow [2024-11-23 01:55:44,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=100, PETRI_TRANSITIONS=76} [2024-11-23 01:55:44,776 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-11-23 01:55:44,776 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 76 transitions, 310 flow [2024-11-23 01:55:44,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:44,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:44,776 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:44,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:44,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-23 01:55:44,977 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:44,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:44,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1839806066, now seen corresponding path program 1 times [2024-11-23 01:55:44,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:44,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320343117] [2024-11-23 01:55:44,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:44,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:45,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:45,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320343117] [2024-11-23 01:55:45,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320343117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:45,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977852189] [2024-11-23 01:55:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:45,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:45,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:45,046 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:45,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 01:55:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:45,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 01:55:45,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:45,130 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:45,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977852189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:45,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:45,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-23 01:55:45,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601481032] [2024-11-23 01:55:45,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:45,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:45,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:45,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:45,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:45,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-23 01:55:45,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 76 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:45,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:45,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-23 01:55:45,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:45,404 INFO L124 PetriNetUnfolderBase]: 1697/3786 cut-off events. [2024-11-23 01:55:45,404 INFO L125 PetriNetUnfolderBase]: For 3243/3261 co-relation queries the response was YES. [2024-11-23 01:55:45,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9432 conditions, 3786 events. 1697/3786 cut-off events. For 3243/3261 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 26870 event pairs, 1060 based on Foata normal form. 59/3706 useless extension candidates. Maximal degree in co-relation 9366. Up to 2009 conditions per place. [2024-11-23 01:55:45,418 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 123 selfloop transitions, 5 changer transitions 0/147 dead transitions. [2024-11-23 01:55:45,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 147 transitions, 877 flow [2024-11-23 01:55:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:55:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:55:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2024-11-23 01:55:45,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6172839506172839 [2024-11-23 01:55:45,419 INFO L175 Difference]: Start difference. First operand has 100 places, 76 transitions, 310 flow. Second operand 5 states and 250 transitions. [2024-11-23 01:55:45,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 147 transitions, 877 flow [2024-11-23 01:55:45,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 147 transitions, 864 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 01:55:45,431 INFO L231 Difference]: Finished difference. Result has 98 places, 75 transitions, 300 flow [2024-11-23 01:55:45,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=98, PETRI_TRANSITIONS=75} [2024-11-23 01:55:45,432 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 24 predicate places. [2024-11-23 01:55:45,432 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 75 transitions, 300 flow [2024-11-23 01:55:45,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:45,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:45,432 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:45,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:45,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:45,633 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:45,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:45,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1839805041, now seen corresponding path program 1 times [2024-11-23 01:55:45,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:45,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617835705] [2024-11-23 01:55:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:45,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:45,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:45,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617835705] [2024-11-23 01:55:45,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617835705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:45,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193792728] [2024-11-23 01:55:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:45,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:45,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:45,687 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:45,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 01:55:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:45,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 01:55:45,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:45,783 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:45,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193792728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:45,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:45,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-23 01:55:45,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830451393] [2024-11-23 01:55:45,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:45,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:45,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:45,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:45,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:45,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-23 01:55:45,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 75 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:45,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:45,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-23 01:55:45,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:46,072 INFO L124 PetriNetUnfolderBase]: 1943/3981 cut-off events. [2024-11-23 01:55:46,072 INFO L125 PetriNetUnfolderBase]: For 3144/3166 co-relation queries the response was YES. [2024-11-23 01:55:46,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10262 conditions, 3981 events. 1943/3981 cut-off events. For 3144/3166 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 26646 event pairs, 1212 based on Foata normal form. 55/3942 useless extension candidates. Maximal degree in co-relation 10197. Up to 2279 conditions per place. [2024-11-23 01:55:46,083 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 78 selfloop transitions, 1 changer transitions 29/124 dead transitions. [2024-11-23 01:55:46,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 124 transitions, 734 flow [2024-11-23 01:55:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:46,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:46,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-23 01:55:46,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6450617283950617 [2024-11-23 01:55:46,084 INFO L175 Difference]: Start difference. First operand has 98 places, 75 transitions, 300 flow. Second operand 4 states and 209 transitions. [2024-11-23 01:55:46,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 124 transitions, 734 flow [2024-11-23 01:55:46,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 124 transitions, 722 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:46,095 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 274 flow [2024-11-23 01:55:46,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=93, 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=4, PETRI_FLOW=274, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2024-11-23 01:55:46,096 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2024-11-23 01:55:46,096 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 274 flow [2024-11-23 01:55:46,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:46,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:55:46,096 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:46,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:46,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 01:55:46,297 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:55:46,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:55:46,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1927883189, now seen corresponding path program 1 times [2024-11-23 01:55:46,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:55:46,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019720542] [2024-11-23 01:55:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:46,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:55:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:55:46,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:55:46,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019720542] [2024-11-23 01:55:46,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019720542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:55:46,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510307292] [2024-11-23 01:55:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:55:46,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:46,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:55:46,364 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:55:46,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-23 01:55:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:55:46,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 01:55:46,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:55:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 01:55:46,449 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:55:46,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510307292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:55:46,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:55:46,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-23 01:55:46,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628937393] [2024-11-23 01:55:46,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:55:46,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:55:46,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:55:46,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:55:46,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:55:46,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-23 01:55:46,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:46,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:55:46,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-23 01:55:46,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:55:46,666 INFO L124 PetriNetUnfolderBase]: 1287/2779 cut-off events. [2024-11-23 01:55:46,666 INFO L125 PetriNetUnfolderBase]: For 1712/1716 co-relation queries the response was YES. [2024-11-23 01:55:46,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6820 conditions, 2779 events. 1287/2779 cut-off events. For 1712/1716 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 18047 event pairs, 984 based on Foata normal form. 53/2693 useless extension candidates. Maximal degree in co-relation 6803. Up to 1874 conditions per place. [2024-11-23 01:55:46,672 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 0 selfloop transitions, 0 changer transitions 118/118 dead transitions. [2024-11-23 01:55:46,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 684 flow [2024-11-23 01:55:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:55:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:55:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-23 01:55:46,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-23 01:55:46,672 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 274 flow. Second operand 4 states and 207 transitions. [2024-11-23 01:55:46,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 684 flow [2024-11-23 01:55:46,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 118 transitions, 676 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-23 01:55:46,677 INFO L231 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2024-11-23 01:55:46,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2024-11-23 01:55:46,678 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2024-11-23 01:55:46,678 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2024-11-23 01:55:46,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:55:46,680 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2024-11-23 01:55:46,680 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2024-11-23 01:55:46,680 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2024-11-23 01:55:46,680 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2024-11-23 01:55:46,680 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2024-11-23 01:55:46,680 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2024-11-23 01:55:46,680 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2024-11-23 01:55:46,680 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2024-11-23 01:55:46,680 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2024-11-23 01:55:46,680 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2024-11-23 01:55:46,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2024-11-23 01:55:46,682 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2024-11-23 01:55:46,682 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2024-11-23 01:55:46,682 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2024-11-23 01:55:46,682 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2024-11-23 01:55:46,682 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2024-11-23 01:55:46,682 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2024-11-23 01:55:46,682 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2024-11-23 01:55:46,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-23 01:55:46,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:55:46,883 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:55:46,890 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-23 01:55:46,890 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 01:55:46,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:55:46 BasicIcfg [2024-11-23 01:55:46,898 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 01:55:46,898 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 01:55:46,898 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 01:55:46,898 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 01:55:46,898 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:27" (3/4) ... [2024-11-23 01:55:46,900 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-23 01:55:46,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-23 01:55:46,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-23 01:55:46,905 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 117 nodes and edges [2024-11-23 01:55:46,905 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-23 01:55:46,906 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-23 01:55:46,906 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-23 01:55:46,985 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-23 01:55:46,985 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-23 01:55:46,985 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 01:55:46,986 INFO L158 Benchmark]: Toolchain (without parser) took 20828.61ms. Allocated memory was 157.3MB in the beginning and 920.6MB in the end (delta: 763.4MB). Free memory was 116.5MB in the beginning and 531.0MB in the end (delta: -414.4MB). Peak memory consumption was 347.8MB. Max. memory is 16.1GB. [2024-11-23 01:55:46,986 INFO L158 Benchmark]: CDTParser took 0.79ms. Allocated memory is still 100.7MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 01:55:46,986 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.51ms. Allocated memory is still 157.3MB. Free memory was 116.5MB in the beginning and 102.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-23 01:55:46,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.91ms. Allocated memory is still 157.3MB. Free memory was 102.3MB in the beginning and 99.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 01:55:46,986 INFO L158 Benchmark]: Boogie Preprocessor took 49.87ms. Allocated memory is still 157.3MB. Free memory was 99.8MB in the beginning and 96.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 01:55:46,986 INFO L158 Benchmark]: RCFGBuilder took 766.29ms. Allocated memory is still 157.3MB. Free memory was 96.7MB in the beginning and 58.1MB in the end (delta: 38.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-11-23 01:55:46,986 INFO L158 Benchmark]: TraceAbstraction took 19601.62ms. Allocated memory was 157.3MB in the beginning and 920.6MB in the end (delta: 763.4MB). Free memory was 57.2MB in the beginning and 536.2MB in the end (delta: -479.0MB). Peak memory consumption was 286.3MB. Max. memory is 16.1GB. [2024-11-23 01:55:46,987 INFO L158 Benchmark]: Witness Printer took 87.31ms. Allocated memory is still 920.6MB. Free memory was 536.2MB in the beginning and 531.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-23 01:55:46,988 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79ms. Allocated memory is still 100.7MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.51ms. Allocated memory is still 157.3MB. Free memory was 116.5MB in the beginning and 102.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.91ms. Allocated memory is still 157.3MB. Free memory was 102.3MB in the beginning and 99.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.87ms. Allocated memory is still 157.3MB. Free memory was 99.8MB in the beginning and 96.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 766.29ms. Allocated memory is still 157.3MB. Free memory was 96.7MB in the beginning and 58.1MB in the end (delta: 38.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 19601.62ms. Allocated memory was 157.3MB in the beginning and 920.6MB in the end (delta: 763.4MB). Free memory was 57.2MB in the beginning and 536.2MB in the end (delta: -479.0MB). Peak memory consumption was 286.3MB. Max. memory is 16.1GB. * Witness Printer took 87.31ms. Allocated memory is still 920.6MB. Free memory was 536.2MB in the beginning and 531.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.5s, OverallIterations: 30, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1896 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1642 mSDsluCounter, 141 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5209 IncrementalHoareTripleChecker+Invalid, 5290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 63 mSDtfsCounter, 5209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 707 GetRequests, 518 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=21, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1139 NumberOfCodeBlocks, 1115 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 1122 ConstructedInterpolants, 0 QuantifiedInterpolants, 2576 SizeOfPredicates, 35 NumberOfNonLiveVariables, 3465 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 54 InterpolantComputations, 27 PerfectInterpolantSequences, 592/666 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-23 01:55:47,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE