./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-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 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:57:27,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:57:27,478 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:57:27,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:57:27,487 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:57:27,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:57:27,527 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:57:27,528 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:57:27,528 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:57:27,529 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:57:27,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:57:27,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:57:27,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:57:27,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:57:27,531 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:57:27,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:57:27,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:57:27,532 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:57:27,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:57:27,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:57:27,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:57:27,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:57:27,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:57:27,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:57:27,534 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:57:27,535 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:57:27,535 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:57:27,535 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:57:27,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:57:27,536 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:57:27,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:57:27,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:57:27,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:57:27,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:57:27,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:57:27,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:57:27,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:57:27,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:57:27,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:57:27,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:57:27,539 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:57:27,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:57:27,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:57:27,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:57:27,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d [2024-10-14 23:57:27,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:57:27,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:57:27,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:57:27,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:57:27,843 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:57:27,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2024-10-14 23:57:29,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:57:29,536 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:57:29,537 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2024-10-14 23:57:29,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c273f8f95/95a9070dbd9d4775ac0f24cba9bcb7ab/FLAGa4ee5d890 [2024-10-14 23:57:29,911 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c273f8f95/95a9070dbd9d4775ac0f24cba9bcb7ab [2024-10-14 23:57:29,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:57:29,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:57:29,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:57:29,916 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:57:29,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:57:29,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:29" (1/1) ... [2024-10-14 23:57:29,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8dd9d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:29, skipping insertion in model container [2024-10-14 23:57:29,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:57:29" (1/1) ... [2024-10-14 23:57:29,949 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:57:30,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:57:30,168 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:57:30,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:57:30,204 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:57:30,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30 WrapperNode [2024-10-14 23:57:30,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:57:30,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:57:30,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:57:30,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:57:30,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,243 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 111 [2024-10-14 23:57:30,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:57:30,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:57:30,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:57:30,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:57:30,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,259 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,273 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-14 23:57:30,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:57:30,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:57:30,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:57:30,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:57:30,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (1/1) ... [2024-10-14 23:57:30,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:57:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:30,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:57:30,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:57:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:57:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 23:57:30,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 23:57:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 23:57:30,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 23:57:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:57:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:57:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:57:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:57:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 23:57:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:57:30,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:57:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:57:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:57:30,398 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:57:30,513 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:57:30,515 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:57:30,832 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:57:30,833 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:57:31,054 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:57:31,055 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 23:57:31,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:31 BoogieIcfgContainer [2024-10-14 23:57:31,055 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:57:31,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:57:31,057 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:57:31,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:57:31,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:57:29" (1/3) ... [2024-10-14 23:57:31,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecb68d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:31, skipping insertion in model container [2024-10-14 23:57:31,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:57:30" (2/3) ... [2024-10-14 23:57:31,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecb68d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:57:31, skipping insertion in model container [2024-10-14 23:57:31,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:31" (3/3) ... [2024-10-14 23:57:31,066 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2024-10-14 23:57:31,083 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:57:31,083 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-14 23:57:31,084 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:57:31,147 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 23:57:31,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 98 flow [2024-10-14 23:57:31,215 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-10-14 23:57:31,215 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:57:31,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 6/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-14 23:57:31,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 98 flow [2024-10-14 23:57:31,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 85 flow [2024-10-14 23:57:31,234 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:57:31,242 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;@3aedcf01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:57:31,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-14 23:57:31,245 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:57:31,246 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:57:31,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:57:31,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:31,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:57:31,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:31,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:31,253 INFO L85 PathProgramCache]: Analyzing trace with hash 466594, now seen corresponding path program 1 times [2024-10-14 23:57:31,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:31,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965261854] [2024-10-14 23:57:31,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:31,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:31,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965261854] [2024-10-14 23:57:31,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965261854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:31,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:31,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:57:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932485127] [2024-10-14 23:57:31,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:31,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:57:31,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:31,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:57:31,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:57:31,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-14 23:57:31,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:31,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:31,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-14 23:57:31,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:31,768 INFO L124 PetriNetUnfolderBase]: 170/329 cut-off events. [2024-10-14 23:57:31,769 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-14 23:57:31,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 329 events. 170/329 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1413 event pairs, 92 based on Foata normal form. 2/231 useless extension candidates. Maximal degree in co-relation 554. Up to 256 conditions per place. [2024-10-14 23:57:31,774 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 20 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-10-14 23:57:31,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 133 flow [2024-10-14 23:57:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:57:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:57:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-10-14 23:57:31,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-10-14 23:57:31,789 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 85 flow. Second operand 4 states and 76 transitions. [2024-10-14 23:57:31,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 133 flow [2024-10-14 23:57:31,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:57:31,793 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 88 flow [2024-10-14 23:57:31,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2024-10-14 23:57:31,797 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2024-10-14 23:57:31,798 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 88 flow [2024-10-14 23:57:31,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:31,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:31,798 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-14 23:57:31,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:57:31,799 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:31,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:31,799 INFO L85 PathProgramCache]: Analyzing trace with hash 14464846, now seen corresponding path program 1 times [2024-10-14 23:57:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:31,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745786112] [2024-10-14 23:57:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:31,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:31,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:31,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745786112] [2024-10-14 23:57:31,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745786112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:31,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:31,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:57:31,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297250602] [2024-10-14 23:57:31,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:31,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:57:31,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:31,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:57:31,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:57:31,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-14 23:57:31,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:31,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:31,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-14 23:57:31,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:32,104 INFO L124 PetriNetUnfolderBase]: 172/337 cut-off events. [2024-10-14 23:57:32,104 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 23:57:32,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 337 events. 172/337 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1444 event pairs, 92 based on Foata normal form. 2/241 useless extension candidates. Maximal degree in co-relation 585. Up to 265 conditions per place. [2024-10-14 23:57:32,109 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 25 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-10-14 23:57:32,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 174 flow [2024-10-14 23:57:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:57:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:57:32,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-10-14 23:57:32,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-10-14 23:57:32,113 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 88 flow. Second operand 4 states and 82 transitions. [2024-10-14 23:57:32,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 174 flow [2024-10-14 23:57:32,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:57:32,116 INFO L231 Difference]: Finished difference. Result has 40 places, 42 transitions, 132 flow [2024-10-14 23:57:32,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2024-10-14 23:57:32,119 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-10-14 23:57:32,119 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 132 flow [2024-10-14 23:57:32,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:32,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:32,120 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:57:32,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:57:32,120 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:32,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:32,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1425960662, now seen corresponding path program 1 times [2024-10-14 23:57:32,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:32,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140704361] [2024-10-14 23:57:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:32,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:32,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:32,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140704361] [2024-10-14 23:57:32,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140704361] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:32,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137191204] [2024-10-14 23:57:32,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:32,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:32,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:32,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:32,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:57:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:32,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:57:32,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:32,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:32,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137191204] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:32,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:32,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-14 23:57:32,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775486632] [2024-10-14 23:57:32,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:32,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:57:32,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:32,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:57:32,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:57:32,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-14 23:57:32,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 132 flow. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:32,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:32,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-14 23:57:32,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:32,737 INFO L124 PetriNetUnfolderBase]: 178/361 cut-off events. [2024-10-14 23:57:32,737 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-14 23:57:32,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 361 events. 178/361 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1631 event pairs, 92 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 596. Up to 268 conditions per place. [2024-10-14 23:57:32,743 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 25 selfloop transitions, 25 changer transitions 0/60 dead transitions. [2024-10-14 23:57:32,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 60 transitions, 310 flow [2024-10-14 23:57:32,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 23:57:32,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 23:57:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-10-14 23:57:32,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-10-14 23:57:32,745 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 132 flow. Second operand 10 states and 176 transitions. [2024-10-14 23:57:32,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 60 transitions, 310 flow [2024-10-14 23:57:32,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:57:32,749 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 294 flow [2024-10-14 23:57:32,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=294, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2024-10-14 23:57:32,751 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-10-14 23:57:32,751 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 294 flow [2024-10-14 23:57:32,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:32,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:32,752 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:32,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 23:57:32,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:32,956 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:32,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1837290423, now seen corresponding path program 1 times [2024-10-14 23:57:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:32,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769542836] [2024-10-14 23:57:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:32,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:33,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:33,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769542836] [2024-10-14 23:57:33,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769542836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:33,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:33,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:57:33,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244871947] [2024-10-14 23:57:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:33,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:57:33,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:33,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:57:33,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:57:33,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-14 23:57:33,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:33,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:33,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-14 23:57:33,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:33,178 INFO L124 PetriNetUnfolderBase]: 202/382 cut-off events. [2024-10-14 23:57:33,179 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-10-14 23:57:33,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 382 events. 202/382 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1651 event pairs, 75 based on Foata normal form. 14/289 useless extension candidates. Maximal degree in co-relation 748. Up to 248 conditions per place. [2024-10-14 23:57:33,183 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 55 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-10-14 23:57:33,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 428 flow [2024-10-14 23:57:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:57:33,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:57:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-14 23:57:33,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-14 23:57:33,187 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 294 flow. Second operand 4 states and 91 transitions. [2024-10-14 23:57:33,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 428 flow [2024-10-14 23:57:33,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 364 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-14 23:57:33,195 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 234 flow [2024-10-14 23:57:33,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2024-10-14 23:57:33,197 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2024-10-14 23:57:33,198 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 234 flow [2024-10-14 23:57:33,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:33,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:33,198 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:33,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:57:33,199 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:33,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:33,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1121427785, now seen corresponding path program 1 times [2024-10-14 23:57:33,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746585479] [2024-10-14 23:57:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:33,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:33,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:33,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746585479] [2024-10-14 23:57:33,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746585479] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:33,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:33,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:57:33,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992021817] [2024-10-14 23:57:33,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:33,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:57:33,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:33,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:57:33,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:57:33,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-14 23:57:33,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:33,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:33,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-14 23:57:33,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:33,395 INFO L124 PetriNetUnfolderBase]: 308/559 cut-off events. [2024-10-14 23:57:33,395 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-10-14 23:57:33,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 559 events. 308/559 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2444 event pairs, 58 based on Foata normal form. 14/466 useless extension candidates. Maximal degree in co-relation 1135. Up to 271 conditions per place. [2024-10-14 23:57:33,400 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 71 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2024-10-14 23:57:33,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 441 flow [2024-10-14 23:57:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:57:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:57:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-10-14 23:57:33,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6369047619047619 [2024-10-14 23:57:33,402 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 234 flow. Second operand 4 states and 107 transitions. [2024-10-14 23:57:33,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 441 flow [2024-10-14 23:57:33,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 84 transitions, 431 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:57:33,407 INFO L231 Difference]: Finished difference. Result has 52 places, 61 transitions, 248 flow [2024-10-14 23:57:33,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=52, PETRI_TRANSITIONS=61} [2024-10-14 23:57:33,408 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-10-14 23:57:33,408 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 61 transitions, 248 flow [2024-10-14 23:57:33,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:33,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:33,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:33,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:57:33,409 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:33,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -586243611, now seen corresponding path program 1 times [2024-10-14 23:57:33,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:33,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259270164] [2024-10-14 23:57:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:33,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:33,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:33,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259270164] [2024-10-14 23:57:33,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259270164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:33,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:33,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:57:33,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490542359] [2024-10-14 23:57:33,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:33,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:57:33,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:57:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:57:33,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-14 23:57:33,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 61 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:33,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:33,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-14 23:57:33,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:33,658 INFO L124 PetriNetUnfolderBase]: 511/904 cut-off events. [2024-10-14 23:57:33,658 INFO L125 PetriNetUnfolderBase]: For 195/209 co-relation queries the response was YES. [2024-10-14 23:57:33,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 904 events. 511/904 cut-off events. For 195/209 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4207 event pairs, 117 based on Foata normal form. 22/761 useless extension candidates. Maximal degree in co-relation 1913. Up to 451 conditions per place. [2024-10-14 23:57:33,665 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 75 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-10-14 23:57:33,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 480 flow [2024-10-14 23:57:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:57:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:57:33,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-10-14 23:57:33,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-10-14 23:57:33,667 INFO L175 Difference]: Start difference. First operand has 52 places, 61 transitions, 248 flow. Second operand 4 states and 106 transitions. [2024-10-14 23:57:33,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 480 flow [2024-10-14 23:57:33,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:57:33,671 INFO L231 Difference]: Finished difference. Result has 56 places, 63 transitions, 268 flow [2024-10-14 23:57:33,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=56, PETRI_TRANSITIONS=63} [2024-10-14 23:57:33,672 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2024-10-14 23:57:33,672 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 63 transitions, 268 flow [2024-10-14 23:57:33,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:33,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:33,673 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:33,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 23:57:33,674 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:33,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash 549054843, now seen corresponding path program 1 times [2024-10-14 23:57:33,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:33,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102497535] [2024-10-14 23:57:33,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:33,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 23:57:33,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102497535] [2024-10-14 23:57:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102497535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:33,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:33,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:57:33,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624612143] [2024-10-14 23:57:33,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:33,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:57:33,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:33,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:57:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:57:33,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-10-14 23:57:33,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 63 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:33,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:33,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-10-14 23:57:33,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:33,957 INFO L124 PetriNetUnfolderBase]: 542/1071 cut-off events. [2024-10-14 23:57:33,958 INFO L125 PetriNetUnfolderBase]: For 332/332 co-relation queries the response was YES. [2024-10-14 23:57:33,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 1071 events. 542/1071 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5594 event pairs, 375 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 2358. Up to 698 conditions per place. [2024-10-14 23:57:33,964 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 66 selfloop transitions, 13 changer transitions 3/93 dead transitions. [2024-10-14 23:57:33,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 549 flow [2024-10-14 23:57:33,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:57:33,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:57:33,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-14 23:57:33,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-14 23:57:33,966 INFO L175 Difference]: Start difference. First operand has 56 places, 63 transitions, 268 flow. Second operand 5 states and 126 transitions. [2024-10-14 23:57:33,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 549 flow [2024-10-14 23:57:33,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:57:33,970 INFO L231 Difference]: Finished difference. Result has 61 places, 73 transitions, 386 flow [2024-10-14 23:57:33,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=61, PETRI_TRANSITIONS=73} [2024-10-14 23:57:33,971 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2024-10-14 23:57:33,971 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 73 transitions, 386 flow [2024-10-14 23:57:33,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:33,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:33,972 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:33,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:57:33,972 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:33,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:33,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1873333471, now seen corresponding path program 1 times [2024-10-14 23:57:33,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:33,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760754900] [2024-10-14 23:57:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:33,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:57:34,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:34,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760754900] [2024-10-14 23:57:34,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760754900] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:34,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:34,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:57:34,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147302368] [2024-10-14 23:57:34,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:34,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:57:34,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:34,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:57:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:57:34,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-10-14 23:57:34,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 73 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:34,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:34,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-10-14 23:57:34,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:34,244 INFO L124 PetriNetUnfolderBase]: 465/918 cut-off events. [2024-10-14 23:57:34,244 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2024-10-14 23:57:34,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2165 conditions, 918 events. 465/918 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4557 event pairs, 319 based on Foata normal form. 0/869 useless extension candidates. Maximal degree in co-relation 2066. Up to 698 conditions per place. [2024-10-14 23:57:34,250 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 50 selfloop transitions, 12 changer transitions 14/87 dead transitions. [2024-10-14 23:57:34,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 581 flow [2024-10-14 23:57:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:57:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:57:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-14 23:57:34,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-10-14 23:57:34,254 INFO L175 Difference]: Start difference. First operand has 61 places, 73 transitions, 386 flow. Second operand 5 states and 122 transitions. [2024-10-14 23:57:34,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 581 flow [2024-10-14 23:57:34,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 87 transitions, 577 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-14 23:57:34,259 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 408 flow [2024-10-14 23:57:34,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2024-10-14 23:57:34,259 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-10-14 23:57:34,260 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 408 flow [2024-10-14 23:57:34,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:34,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:34,260 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-14 23:57:34,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 23:57:34,262 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:34,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:34,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2104009394, now seen corresponding path program 2 times [2024-10-14 23:57:34,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:34,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552058473] [2024-10-14 23:57:34,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:34,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:34,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552058473] [2024-10-14 23:57:34,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552058473] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146403772] [2024-10-14 23:57:34,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:57:34,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:34,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:34,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:34,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:57:34,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:57:34,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:57:34,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 23:57:34,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 23:57:34,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 23:57:34,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146403772] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:34,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:34,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-14 23:57:34,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898265446] [2024-10-14 23:57:34,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:34,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 23:57:34,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:34,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 23:57:34,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-14 23:57:34,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-14 23:57:34,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 408 flow. Second operand has 14 states, 14 states have (on average 13.142857142857142) internal successors, (184), 14 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:34,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:34,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-14 23:57:34,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:34,978 INFO L124 PetriNetUnfolderBase]: 467/931 cut-off events. [2024-10-14 23:57:34,978 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2024-10-14 23:57:34,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2262 conditions, 931 events. 467/931 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4782 event pairs, 319 based on Foata normal form. 4/930 useless extension candidates. Maximal degree in co-relation 2116. Up to 738 conditions per place. [2024-10-14 23:57:34,984 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 27 selfloop transitions, 43 changer transitions 0/79 dead transitions. [2024-10-14 23:57:34,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 595 flow [2024-10-14 23:57:34,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 23:57:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-14 23:57:34,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 346 transitions. [2024-10-14 23:57:34,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34325396825396826 [2024-10-14 23:57:34,987 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 408 flow. Second operand 24 states and 346 transitions. [2024-10-14 23:57:34,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 79 transitions, 595 flow [2024-10-14 23:57:34,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 557 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 23:57:34,991 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 524 flow [2024-10-14 23:57:34,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=524, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2024-10-14 23:57:34,992 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 45 predicate places. [2024-10-14 23:57:34,992 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 524 flow [2024-10-14 23:57:34,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.142857142857142) internal successors, (184), 14 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:34,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:34,993 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:35,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 23:57:35,193 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,SelfDestructingSolverStorable8 [2024-10-14 23:57:35,194 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:35,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash 681192179, now seen corresponding path program 1 times [2024-10-14 23:57:35,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:35,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282732208] [2024-10-14 23:57:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:35,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 23:57:35,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:35,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282732208] [2024-10-14 23:57:35,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282732208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:35,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:35,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:57:35,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215138307] [2024-10-14 23:57:35,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:35,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:57:35,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:57:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:57:35,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-10-14 23:57:35,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:35,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:35,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-10-14 23:57:35,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:35,468 INFO L124 PetriNetUnfolderBase]: 565/1102 cut-off events. [2024-10-14 23:57:35,468 INFO L125 PetriNetUnfolderBase]: For 564/586 co-relation queries the response was YES. [2024-10-14 23:57:35,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 1102 events. 565/1102 cut-off events. For 564/586 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5695 event pairs, 238 based on Foata normal form. 22/1119 useless extension candidates. Maximal degree in co-relation 2605. Up to 407 conditions per place. [2024-10-14 23:57:35,475 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 86 selfloop transitions, 11 changer transitions 3/110 dead transitions. [2024-10-14 23:57:35,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 110 transitions, 819 flow [2024-10-14 23:57:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:57:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:57:35,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-10-14 23:57:35,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-10-14 23:57:35,476 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 524 flow. Second operand 5 states and 137 transitions. [2024-10-14 23:57:35,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 110 transitions, 819 flow [2024-10-14 23:57:35,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 110 transitions, 707 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-10-14 23:57:35,482 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 437 flow [2024-10-14 23:57:35,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=437, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2024-10-14 23:57:35,484 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2024-10-14 23:57:35,485 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 437 flow [2024-10-14 23:57:35,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:35,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:35,485 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:35,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 23:57:35,485 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:35,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2072043351, now seen corresponding path program 1 times [2024-10-14 23:57:35,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:35,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383321548] [2024-10-14 23:57:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:35,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 23:57:35,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:35,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383321548] [2024-10-14 23:57:35,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383321548] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:57:35,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:57:35,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:57:35,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005181659] [2024-10-14 23:57:35,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:57:35,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:57:35,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:35,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:57:35,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:57:35,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-10-14 23:57:35,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 437 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:35,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:35,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-10-14 23:57:35,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:35,762 INFO L124 PetriNetUnfolderBase]: 488/971 cut-off events. [2024-10-14 23:57:35,762 INFO L125 PetriNetUnfolderBase]: For 574/584 co-relation queries the response was YES. [2024-10-14 23:57:35,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 971 events. 488/971 cut-off events. For 574/584 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4866 event pairs, 191 based on Foata normal form. 7/977 useless extension candidates. Maximal degree in co-relation 2321. Up to 429 conditions per place. [2024-10-14 23:57:35,767 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 72 selfloop transitions, 10 changer transitions 10/102 dead transitions. [2024-10-14 23:57:35,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 102 transitions, 690 flow [2024-10-14 23:57:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:57:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:57:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-10-14 23:57:35,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-10-14 23:57:35,769 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 437 flow. Second operand 5 states and 131 transitions. [2024-10-14 23:57:35,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 102 transitions, 690 flow [2024-10-14 23:57:35,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 102 transitions, 667 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:57:35,774 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 430 flow [2024-10-14 23:57:35,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-10-14 23:57:35,774 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 41 predicate places. [2024-10-14 23:57:35,775 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 430 flow [2024-10-14 23:57:35,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:35,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:35,775 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:35,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 23:57:35,775 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:35,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:35,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1665728021, now seen corresponding path program 1 times [2024-10-14 23:57:35,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:35,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444915749] [2024-10-14 23:57:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:35,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:57:35,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:35,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444915749] [2024-10-14 23:57:35,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444915749] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:35,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792474937] [2024-10-14 23:57:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:35,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:35,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:35,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:35,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:57:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:35,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 23:57:35,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:57:36,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:57:36,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792474937] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:36,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:36,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-10-14 23:57:36,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303924594] [2024-10-14 23:57:36,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:36,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-14 23:57:36,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-14 23:57:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-10-14 23:57:36,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-14 23:57:36,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 430 flow. Second operand has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 21 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:36,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:36,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-14 23:57:36,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:37,555 INFO L124 PetriNetUnfolderBase]: 1464/2712 cut-off events. [2024-10-14 23:57:37,556 INFO L125 PetriNetUnfolderBase]: For 1927/1993 co-relation queries the response was YES. [2024-10-14 23:57:37,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6825 conditions, 2712 events. 1464/2712 cut-off events. For 1927/1993 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16692 event pairs, 506 based on Foata normal form. 66/2755 useless extension candidates. Maximal degree in co-relation 6701. Up to 415 conditions per place. [2024-10-14 23:57:37,573 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 166 selfloop transitions, 45 changer transitions 50/269 dead transitions. [2024-10-14 23:57:37,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 269 transitions, 1679 flow [2024-10-14 23:57:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-14 23:57:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-14 23:57:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 486 transitions. [2024-10-14 23:57:37,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.413265306122449 [2024-10-14 23:57:37,576 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 430 flow. Second operand 28 states and 486 transitions. [2024-10-14 23:57:37,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 269 transitions, 1679 flow [2024-10-14 23:57:37,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 269 transitions, 1605 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-14 23:57:37,587 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 694 flow [2024-10-14 23:57:37,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=694, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2024-10-14 23:57:37,588 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2024-10-14 23:57:37,588 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 694 flow [2024-10-14 23:57:37,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 21 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:37,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:37,589 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:37,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 23:57:37,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:37,790 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:37,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1616203321, now seen corresponding path program 1 times [2024-10-14 23:57:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:37,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626789818] [2024-10-14 23:57:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:37,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:57:37,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:37,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626789818] [2024-10-14 23:57:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626789818] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27914541] [2024-10-14 23:57:37,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:37,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:37,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:37,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:37,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:57:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:37,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 23:57:37,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:38,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:57:38,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:57:38,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27914541] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:38,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:38,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-10-14 23:57:38,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513298051] [2024-10-14 23:57:38,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:38,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 23:57:38,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:38,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 23:57:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-10-14 23:57:38,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-14 23:57:38,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 694 flow. Second operand has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:38,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:38,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-14 23:57:38,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:39,007 INFO L124 PetriNetUnfolderBase]: 1292/2388 cut-off events. [2024-10-14 23:57:39,008 INFO L125 PetriNetUnfolderBase]: For 2769/2781 co-relation queries the response was YES. [2024-10-14 23:57:39,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6292 conditions, 2388 events. 1292/2388 cut-off events. For 2769/2781 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 14252 event pairs, 418 based on Foata normal form. 76/2420 useless extension candidates. Maximal degree in co-relation 6152. Up to 569 conditions per place. [2024-10-14 23:57:39,020 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 68 selfloop transitions, 56 changer transitions 43/174 dead transitions. [2024-10-14 23:57:39,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 174 transitions, 1367 flow [2024-10-14 23:57:39,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 23:57:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 23:57:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 228 transitions. [2024-10-14 23:57:39,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-10-14 23:57:39,022 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 694 flow. Second operand 13 states and 228 transitions. [2024-10-14 23:57:39,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 174 transitions, 1367 flow [2024-10-14 23:57:39,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 174 transitions, 1321 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-10-14 23:57:39,031 INFO L231 Difference]: Finished difference. Result has 111 places, 91 transitions, 718 flow [2024-10-14 23:57:39,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=718, PETRI_PLACES=111, PETRI_TRANSITIONS=91} [2024-10-14 23:57:39,032 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2024-10-14 23:57:39,032 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 91 transitions, 718 flow [2024-10-14 23:57:39,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:39,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:39,032 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-14 23:57:39,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 23:57:39,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:39,234 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:39,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:39,234 INFO L85 PathProgramCache]: Analyzing trace with hash 209643134, now seen corresponding path program 1 times [2024-10-14 23:57:39,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:39,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715649222] [2024-10-14 23:57:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:39,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:39,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:39,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715649222] [2024-10-14 23:57:39,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715649222] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:39,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620735417] [2024-10-14 23:57:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:39,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:39,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:39,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:57:39,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:57:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:39,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 23:57:39,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:39,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:39,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620735417] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:39,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:39,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-14 23:57:39,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867826106] [2024-10-14 23:57:39,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:39,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-14 23:57:39,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:39,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-14 23:57:39,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-14 23:57:39,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-14 23:57:39,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 91 transitions, 718 flow. Second operand has 28 states, 28 states have (on average 13.071428571428571) internal successors, (366), 28 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:39,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:39,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-14 23:57:39,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:40,336 INFO L124 PetriNetUnfolderBase]: 808/1621 cut-off events. [2024-10-14 23:57:40,336 INFO L125 PetriNetUnfolderBase]: For 3076/3076 co-relation queries the response was YES. [2024-10-14 23:57:40,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4795 conditions, 1621 events. 808/1621 cut-off events. For 3076/3076 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8988 event pairs, 556 based on Foata normal form. 21/1635 useless extension candidates. Maximal degree in co-relation 4210. Up to 1276 conditions per place. [2024-10-14 23:57:40,346 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 34 selfloop transitions, 119 changer transitions 0/161 dead transitions. [2024-10-14 23:57:40,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 161 transitions, 1822 flow [2024-10-14 23:57:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-14 23:57:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-14 23:57:40,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 414 transitions. [2024-10-14 23:57:40,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3791208791208791 [2024-10-14 23:57:40,348 INFO L175 Difference]: Start difference. First operand has 111 places, 91 transitions, 718 flow. Second operand 26 states and 414 transitions. [2024-10-14 23:57:40,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 161 transitions, 1822 flow [2024-10-14 23:57:40,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 161 transitions, 1779 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-10-14 23:57:40,358 INFO L231 Difference]: Finished difference. Result has 124 places, 161 transitions, 1799 flow [2024-10-14 23:57:40,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1799, PETRI_PLACES=124, PETRI_TRANSITIONS=161} [2024-10-14 23:57:40,360 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2024-10-14 23:57:40,361 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 161 transitions, 1799 flow [2024-10-14 23:57:40,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.071428571428571) internal successors, (366), 28 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:40,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:40,362 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:40,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 23:57:40,563 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,SelfDestructingSolverStorable13 [2024-10-14 23:57:40,564 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:40,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:40,564 INFO L85 PathProgramCache]: Analyzing trace with hash -531801311, now seen corresponding path program 1 times [2024-10-14 23:57:40,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:40,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662505793] [2024-10-14 23:57:40,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:40,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 23:57:40,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:40,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662505793] [2024-10-14 23:57:40,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662505793] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:40,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996188000] [2024-10-14 23:57:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:40,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:40,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:40,641 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) [2024-10-14 23:57:40,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 23:57:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:40,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 23:57:40,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 23:57:40,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 23:57:40,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996188000] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:40,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:40,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-10-14 23:57:40,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404492234] [2024-10-14 23:57:40,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:41,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 23:57:41,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:41,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 23:57:41,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-10-14 23:57:41,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-10-14 23:57:41,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 161 transitions, 1799 flow. Second operand has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 18 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) [2024-10-14 23:57:41,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:41,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-10-14 23:57:41,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:41,675 INFO L124 PetriNetUnfolderBase]: 958/1804 cut-off events. [2024-10-14 23:57:41,675 INFO L125 PetriNetUnfolderBase]: For 2717/2739 co-relation queries the response was YES. [2024-10-14 23:57:41,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5166 conditions, 1804 events. 958/1804 cut-off events. For 2717/2739 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9301 event pairs, 232 based on Foata normal form. 40/1840 useless extension candidates. Maximal degree in co-relation 4933. Up to 393 conditions per place. [2024-10-14 23:57:41,693 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 143 selfloop transitions, 61 changer transitions 66/277 dead transitions. [2024-10-14 23:57:41,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 277 transitions, 2877 flow [2024-10-14 23:57:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 23:57:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 23:57:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 304 transitions. [2024-10-14 23:57:41,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4257703081232493 [2024-10-14 23:57:41,695 INFO L175 Difference]: Start difference. First operand has 124 places, 161 transitions, 1799 flow. Second operand 17 states and 304 transitions. [2024-10-14 23:57:41,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 277 transitions, 2877 flow [2024-10-14 23:57:41,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 277 transitions, 2422 flow, removed 162 selfloop flow, removed 12 redundant places. [2024-10-14 23:57:41,710 INFO L231 Difference]: Finished difference. Result has 131 places, 161 transitions, 1549 flow [2024-10-14 23:57:41,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1549, PETRI_PLACES=131, PETRI_TRANSITIONS=161} [2024-10-14 23:57:41,711 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 92 predicate places. [2024-10-14 23:57:41,711 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 161 transitions, 1549 flow [2024-10-14 23:57:41,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 18 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) [2024-10-14 23:57:41,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:41,711 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:41,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 23:57:41,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 23:57:41,912 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:41,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1578804539, now seen corresponding path program 2 times [2024-10-14 23:57:41,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:41,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634630612] [2024-10-14 23:57:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:41,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-14 23:57:42,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:42,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634630612] [2024-10-14 23:57:42,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634630612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:42,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625819580] [2024-10-14 23:57:42,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:57:42,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:42,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:42,030 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) [2024-10-14 23:57:42,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 23:57:42,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:57:42,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:57:42,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:57:42,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 23:57:42,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 23:57:42,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625819580] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:42,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:42,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2024-10-14 23:57:42,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287707575] [2024-10-14 23:57:42,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:42,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 23:57:42,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:42,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 23:57:42,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 23:57:42,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-14 23:57:42,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 161 transitions, 1549 flow. Second operand has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 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) [2024-10-14 23:57:42,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:42,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-14 23:57:42,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:42,629 INFO L124 PetriNetUnfolderBase]: 1250/2262 cut-off events. [2024-10-14 23:57:42,630 INFO L125 PetriNetUnfolderBase]: For 3248/3335 co-relation queries the response was YES. [2024-10-14 23:57:42,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6553 conditions, 2262 events. 1250/2262 cut-off events. For 3248/3335 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11384 event pairs, 227 based on Foata normal form. 0/2257 useless extension candidates. Maximal degree in co-relation 6344. Up to 679 conditions per place. [2024-10-14 23:57:42,644 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 217 selfloop transitions, 8 changer transitions 21/254 dead transitions. [2024-10-14 23:57:42,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 254 transitions, 2484 flow [2024-10-14 23:57:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 23:57:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 23:57:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-10-14 23:57:42,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-14 23:57:42,646 INFO L175 Difference]: Start difference. First operand has 131 places, 161 transitions, 1549 flow. Second operand 9 states and 224 transitions. [2024-10-14 23:57:42,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 254 transitions, 2484 flow [2024-10-14 23:57:42,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 254 transitions, 2364 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-10-14 23:57:42,660 INFO L231 Difference]: Finished difference. Result has 124 places, 160 transitions, 1499 flow [2024-10-14 23:57:42,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1499, PETRI_PLACES=124, PETRI_TRANSITIONS=160} [2024-10-14 23:57:42,661 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2024-10-14 23:57:42,661 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 160 transitions, 1499 flow [2024-10-14 23:57:42,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 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) [2024-10-14 23:57:42,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:42,662 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:42,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 23:57:42,865 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 [2024-10-14 23:57:42,866 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:42,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:42,866 INFO L85 PathProgramCache]: Analyzing trace with hash -122621203, now seen corresponding path program 2 times [2024-10-14 23:57:42,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:42,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403920232] [2024-10-14 23:57:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:42,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 23:57:43,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:43,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403920232] [2024-10-14 23:57:43,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403920232] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:43,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430502585] [2024-10-14 23:57:43,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:57:43,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:43,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:43,089 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) [2024-10-14 23:57:43,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 23:57:43,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:57:43,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:57:43,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:57:43,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-14 23:57:43,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-14 23:57:43,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430502585] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:43,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:43,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-14 23:57:43,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214507857] [2024-10-14 23:57:43,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:43,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 23:57:43,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:43,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 23:57:43,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-14 23:57:43,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-14 23:57:43,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 160 transitions, 1499 flow. Second operand has 15 states, 15 states have (on average 16.466666666666665) internal successors, (247), 15 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:43,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:43,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-14 23:57:43,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:44,110 INFO L124 PetriNetUnfolderBase]: 1156/2363 cut-off events. [2024-10-14 23:57:44,111 INFO L125 PetriNetUnfolderBase]: For 4294/4294 co-relation queries the response was YES. [2024-10-14 23:57:44,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7281 conditions, 2363 events. 1156/2363 cut-off events. For 4294/4294 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13657 event pairs, 352 based on Foata normal form. 80/2440 useless extension candidates. Maximal degree in co-relation 7028. Up to 523 conditions per place. [2024-10-14 23:57:44,119 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 57 selfloop transitions, 87 changer transitions 189/336 dead transitions. [2024-10-14 23:57:44,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 336 transitions, 3169 flow [2024-10-14 23:57:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 23:57:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-14 23:57:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 461 transitions. [2024-10-14 23:57:44,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4573412698412698 [2024-10-14 23:57:44,121 INFO L175 Difference]: Start difference. First operand has 124 places, 160 transitions, 1499 flow. Second operand 24 states and 461 transitions. [2024-10-14 23:57:44,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 336 transitions, 3169 flow [2024-10-14 23:57:44,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 336 transitions, 3032 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-10-14 23:57:44,145 INFO L231 Difference]: Finished difference. Result has 140 places, 147 transitions, 1917 flow [2024-10-14 23:57:44,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1917, PETRI_PLACES=140, PETRI_TRANSITIONS=147} [2024-10-14 23:57:44,147 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 101 predicate places. [2024-10-14 23:57:44,147 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 147 transitions, 1917 flow [2024-10-14 23:57:44,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.466666666666665) internal successors, (247), 15 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:44,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:57:44,148 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2024-10-14 23:57:44,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 23:57:44,348 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 [2024-10-14 23:57:44,348 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-10-14 23:57:44,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:57:44,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1446661780, now seen corresponding path program 2 times [2024-10-14 23:57:44,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:57:44,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147641544] [2024-10-14 23:57:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:57:44,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:57:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:57:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:57:44,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:57:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147641544] [2024-10-14 23:57:44,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147641544] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:57:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644668595] [2024-10-14 23:57:44,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:57:44,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:57:44,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:57:44,942 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) [2024-10-14 23:57:44,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 23:57:45,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:57:45,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:57:45,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 23:57:45,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:57:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-14 23:57:45,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:57:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-14 23:57:45,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644668595] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:57:45,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:57:45,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-10-14 23:57:45,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246891801] [2024-10-14 23:57:45,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:57:45,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-14 23:57:45,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:57:45,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-14 23:57:45,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-10-14 23:57:45,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-14 23:57:45,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 147 transitions, 1917 flow. Second operand has 31 states, 31 states have (on average 13.096774193548388) internal successors, (406), 31 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:45,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:57:45,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-14 23:57:45,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:57:45,834 INFO L124 PetriNetUnfolderBase]: 15/225 cut-off events. [2024-10-14 23:57:45,834 INFO L125 PetriNetUnfolderBase]: For 1962/1962 co-relation queries the response was YES. [2024-10-14 23:57:45,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 225 events. 15/225 cut-off events. For 1962/1962 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 700 event pairs, 0 based on Foata normal form. 8/233 useless extension candidates. Maximal degree in co-relation 1247. Up to 70 conditions per place. [2024-10-14 23:57:45,835 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 0 selfloop transitions, 0 changer transitions 157/157 dead transitions. [2024-10-14 23:57:45,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 157 transitions, 2358 flow [2024-10-14 23:57:45,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-14 23:57:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-14 23:57:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 433 transitions. [2024-10-14 23:57:45,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34365079365079365 [2024-10-14 23:57:45,837 INFO L175 Difference]: Start difference. First operand has 140 places, 147 transitions, 1917 flow. Second operand 30 states and 433 transitions. [2024-10-14 23:57:45,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 157 transitions, 2358 flow [2024-10-14 23:57:45,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 157 transitions, 1663 flow, removed 90 selfloop flow, removed 28 redundant places. [2024-10-14 23:57:45,848 INFO L231 Difference]: Finished difference. Result has 101 places, 0 transitions, 0 flow [2024-10-14 23:57:45,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=0, PETRI_PLACES=101, PETRI_TRANSITIONS=0} [2024-10-14 23:57:45,848 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2024-10-14 23:57:45,849 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 0 transitions, 0 flow [2024-10-14 23:57:45,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 13.096774193548388) internal successors, (406), 31 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:57:45,851 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2024-10-14 23:57:45,852 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2024-10-14 23:57:45,852 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-10-14 23:57:45,852 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-10-14 23:57:45,852 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-10-14 23:57:45,853 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-10-14 23:57:45,853 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-10-14 23:57:45,853 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-10-14 23:57:45,853 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-10-14 23:57:45,853 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-10-14 23:57:45,853 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-10-14 23:57:45,854 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-10-14 23:57:45,854 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-10-14 23:57:45,854 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-10-14 23:57:45,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 23:57:46,054 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 [2024-10-14 23:57:46,055 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:57:46,061 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 23:57:46,061 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 23:57:46,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:57:46 BasicIcfg [2024-10-14 23:57:46,067 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 23:57:46,068 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 23:57:46,068 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 23:57:46,069 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 23:57:46,069 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:57:31" (3/4) ... [2024-10-14 23:57:46,070 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 23:57:46,073 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-14 23:57:46,073 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-14 23:57:46,080 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 112 nodes and edges [2024-10-14 23:57:46,081 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2024-10-14 23:57:46,081 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-14 23:57:46,081 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-14 23:57:46,177 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 23:57:46,177 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 23:57:46,177 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 23:57:46,178 INFO L158 Benchmark]: Toolchain (without parser) took 16263.39ms. Allocated memory was 174.1MB in the beginning and 310.4MB in the end (delta: 136.3MB). Free memory was 126.3MB in the beginning and 131.0MB in the end (delta: -4.7MB). Peak memory consumption was 134.8MB. Max. memory is 16.1GB. [2024-10-14 23:57:46,178 INFO L158 Benchmark]: CDTParser took 0.90ms. Allocated memory is still 174.1MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 23:57:46,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.55ms. Allocated memory is still 174.1MB. Free memory was 126.3MB in the beginning and 114.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 23:57:46,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.48ms. Allocated memory is still 174.1MB. Free memory was 114.4MB in the beginning and 112.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 23:57:46,179 INFO L158 Benchmark]: Boogie Preprocessor took 53.59ms. Allocated memory is still 174.1MB. Free memory was 112.3MB in the beginning and 110.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 23:57:46,179 INFO L158 Benchmark]: RCFGBuilder took 757.22ms. Allocated memory is still 174.1MB. Free memory was 110.2MB in the beginning and 67.6MB in the end (delta: 42.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-10-14 23:57:46,180 INFO L158 Benchmark]: TraceAbstraction took 15009.41ms. Allocated memory was 174.1MB in the beginning and 310.4MB in the end (delta: 136.3MB). Free memory was 66.9MB in the beginning and 136.3MB in the end (delta: -69.4MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. [2024-10-14 23:57:46,180 INFO L158 Benchmark]: Witness Printer took 109.18ms. Allocated memory is still 310.4MB. Free memory was 136.3MB in the beginning and 131.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-14 23:57:46,181 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90ms. Allocated memory is still 174.1MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.55ms. Allocated memory is still 174.1MB. Free memory was 126.3MB in the beginning and 114.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.48ms. Allocated memory is still 174.1MB. Free memory was 114.4MB in the beginning and 112.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.59ms. Allocated memory is still 174.1MB. Free memory was 112.3MB in the beginning and 110.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 757.22ms. Allocated memory is still 174.1MB. Free memory was 110.2MB in the beginning and 67.6MB in the end (delta: 42.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 15009.41ms. Allocated memory was 174.1MB in the beginning and 310.4MB in the end (delta: 136.3MB). Free memory was 66.9MB in the beginning and 136.3MB in the end (delta: -69.4MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. * Witness Printer took 109.18ms. Allocated memory is still 310.4MB. Free memory was 136.3MB in the beginning and 131.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: 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: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: 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, 57 locations, 14 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: 14.9s, OverallIterations: 18, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2033 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1938 mSDsluCounter, 1695 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1608 mSDsCounter, 276 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4747 IncrementalHoareTripleChecker+Invalid, 5023 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 276 mSolverCounterUnsat, 87 mSDtfsCounter, 4747 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 637 GetRequests, 325 SyntacticMatches, 8 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2049 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1917occurred in iteration=17, InterpolantAutomatonStates: 221, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 500 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 667 ConstructedInterpolants, 0 QuantifiedInterpolants, 2501 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1149 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 36 InterpolantComputations, 9 PerfectInterpolantSequences, 605/1123 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-14 23:57:46,208 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