./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-simple-queue.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 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:43:54,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:43:54,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:43:54,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:43:54,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:43:54,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:43:54,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:43:54,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:43:54,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:43:54,459 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:43:54,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:43:54,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:43:54,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:43:54,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:43:54,460 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:43:54,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:43:54,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:43:54,461 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:43:54,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:43:54,461 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:43:54,461 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:43:54,461 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:43:54,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:43:54,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:43:54,461 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:43:54,461 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:43:54,461 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:43:54,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:43:54,462 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:43:54,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:43:54,462 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2025-03-09 06:43:54,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:43:54,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:43:54,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:43:54,709 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:43:54,709 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:43:54,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2025-03-09 06:43:55,860 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b93c5f7/7b6f2cf6be4241fa8e8492bba426c491/FLAG816d2aac4 [2025-03-09 06:43:56,120 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:43:56,121 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2025-03-09 06:43:56,131 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b93c5f7/7b6f2cf6be4241fa8e8492bba426c491/FLAG816d2aac4 [2025-03-09 06:43:56,143 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b93c5f7/7b6f2cf6be4241fa8e8492bba426c491 [2025-03-09 06:43:56,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:43:56,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:43:56,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:43:56,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:43:56,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:43:56,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be0aefe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56, skipping insertion in model container [2025-03-09 06:43:56,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,168 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:43:56,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:43:56,306 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:43:56,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:43:56,337 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:43:56,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56 WrapperNode [2025-03-09 06:43:56,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:43:56,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:43:56,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:43:56,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:43:56,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,368 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 128 [2025-03-09 06:43:56,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:43:56,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:43:56,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:43:56,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:43:56,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,380 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,393 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-09 06:43:56,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,398 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:43:56,405 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:43:56,405 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:43:56,405 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:43:56,406 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (1/1) ... [2025-03-09 06:43:56,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:43:56,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:56,439 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) [2025-03-09 06:43:56,441 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 [2025-03-09 06:43:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:43:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:43:56,461 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:43:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:43:56,461 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:43:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:43:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:43:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:43:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:43:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:43:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:43:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:43:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:43:56,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:43:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:43:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:43:56,463 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:43:56,553 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:43:56,554 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:43:56,751 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:43:56,753 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:43:56,878 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:43:56,879 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:43:56,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:43:56 BoogieIcfgContainer [2025-03-09 06:43:56,879 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:43:56,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:43:56,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:43:56,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:43:56,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:43:56" (1/3) ... [2025-03-09 06:43:56,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1011740b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:43:56, skipping insertion in model container [2025-03-09 06:43:56,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:56" (2/3) ... [2025-03-09 06:43:56,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1011740b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:43:56, skipping insertion in model container [2025-03-09 06:43:56,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:43:56" (3/3) ... [2025-03-09 06:43:56,886 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2025-03-09 06:43:56,897 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:43:56,898 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-simple-queue.wvr.c that has 3 procedures, 30 locations, 1 initial locations, 3 loop locations, and 6 error locations. [2025-03-09 06:43:56,898 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:43:56,937 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 06:43:56,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 82 flow [2025-03-09 06:43:56,988 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2025-03-09 06:43:56,989 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:43:56,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 5/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-03-09 06:43:56,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 82 flow [2025-03-09 06:43:56,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 69 flow [2025-03-09 06:43:57,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:43:57,014 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;@4ee823f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:43:57,014 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-03-09 06:43:57,018 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:43:57,018 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:43:57,018 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:43:57,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:57,018 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:43:57,018 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 06:43:57,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:57,023 INFO L85 PathProgramCache]: Analyzing trace with hash 348208, now seen corresponding path program 1 times [2025-03-09 06:43:57,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:57,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637113530] [2025-03-09 06:43:57,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:57,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:57,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:43:57,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:43:57,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:57,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:57,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:57,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637113530] [2025-03-09 06:43:57,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637113530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:57,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:57,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:57,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182942986] [2025-03-09 06:43:57,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:57,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:57,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:57,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:57,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:57,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-09 06:43:57,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2025-03-09 06:43:57,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:57,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-09 06:43:57,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:57,433 INFO L124 PetriNetUnfolderBase]: 165/293 cut-off events. [2025-03-09 06:43:57,434 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2025-03-09 06:43:57,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 293 events. 165/293 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1079 event pairs, 132 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 545. Up to 287 conditions per place. [2025-03-09 06:43:57,439 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 22 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2025-03-09 06:43:57,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 119 flow [2025-03-09 06:43:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2025-03-09 06:43:57,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2025-03-09 06:43:57,452 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 69 flow. Second operand 4 states and 52 transitions. [2025-03-09 06:43:57,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 119 flow [2025-03-09 06:43:57,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:43:57,458 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 85 flow [2025-03-09 06:43:57,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2025-03-09 06:43:57,462 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2025-03-09 06:43:57,463 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 85 flow [2025-03-09 06:43:57,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2025-03-09 06:43:57,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:57,463 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:43:57,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:43:57,464 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 06:43:57,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1783821445, now seen corresponding path program 1 times [2025-03-09 06:43:57,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:57,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963547554] [2025-03-09 06:43:57,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:57,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:57,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:43:57,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:43:57,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:57,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:57,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:57,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963547554] [2025-03-09 06:43:57,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963547554] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:57,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048671794] [2025-03-09 06:43:57,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:57,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:57,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:57,595 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) [2025-03-09 06:43:57,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:43:57,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:43:57,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:43:57,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:57,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:57,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:43:57,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:57,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:43:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048671794] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:57,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:43:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:43:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636746568] [2025-03-09 06:43:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:57,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:43:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:57,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:43:57,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:43:57,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-09 06:43:57,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 85 flow. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2025-03-09 06:43:57,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:57,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-09 06:43:57,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:57,845 INFO L124 PetriNetUnfolderBase]: 165/292 cut-off events. [2025-03-09 06:43:57,845 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:43:57,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 292 events. 165/292 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1072 event pairs, 132 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 583. Up to 282 conditions per place. [2025-03-09 06:43:57,847 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 18 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2025-03-09 06:43:57,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 131 flow [2025-03-09 06:43:57,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:43:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:43:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2025-03-09 06:43:57,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27450980392156865 [2025-03-09 06:43:57,851 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 85 flow. Second operand 6 states and 56 transitions. [2025-03-09 06:43:57,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 131 flow [2025-03-09 06:43:57,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:57,852 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 92 flow [2025-03-09 06:43:57,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2025-03-09 06:43:57,853 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2025-03-09 06:43:57,853 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 92 flow [2025-03-09 06:43:57,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2025-03-09 06:43:57,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:57,854 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:57,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 06:43:58,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:58,058 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 06:43:58,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash -479451663, now seen corresponding path program 1 times [2025-03-09 06:43:58,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:58,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490528469] [2025-03-09 06:43:58,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:58,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:58,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:43:58,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:43:58,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:58,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:58,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490528469] [2025-03-09 06:43:58,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490528469] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:58,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:58,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:58,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617916857] [2025-03-09 06:43:58,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:58,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:58,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:58,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:58,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:58,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-03-09 06:43:58,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2025-03-09 06:43:58,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:58,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-03-09 06:43:58,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:58,292 INFO L124 PetriNetUnfolderBase]: 232/428 cut-off events. [2025-03-09 06:43:58,294 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-03-09 06:43:58,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 894 conditions, 428 events. 232/428 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1795 event pairs, 200 based on Foata normal form. 23/362 useless extension candidates. Maximal degree in co-relation 585. Up to 284 conditions per place. [2025-03-09 06:43:58,297 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 21 selfloop transitions, 2 changer transitions 14/41 dead transitions. [2025-03-09 06:43:58,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 196 flow [2025-03-09 06:43:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-03-09 06:43:58,298 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2025-03-09 06:43:58,299 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 92 flow. Second operand 4 states and 69 transitions. [2025-03-09 06:43:58,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 196 flow [2025-03-09 06:43:58,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 174 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-03-09 06:43:58,301 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 80 flow [2025-03-09 06:43:58,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2025-03-09 06:43:58,303 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2025-03-09 06:43:58,303 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 80 flow [2025-03-09 06:43:58,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2025-03-09 06:43:58,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:58,303 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:43:58,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:43:58,303 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 06:43:58,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:58,304 INFO L85 PathProgramCache]: Analyzing trace with hash -536109761, now seen corresponding path program 1 times [2025-03-09 06:43:58,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:58,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673104766] [2025-03-09 06:43:58,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:58,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:58,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:43:58,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:43:58,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:58,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:58,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:58,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673104766] [2025-03-09 06:43:58,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673104766] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:58,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149485633] [2025-03-09 06:43:58,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:58,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:58,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:58,381 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) [2025-03-09 06:43:58,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:43:58,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:43:58,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:43:58,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:58,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:58,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:43:58,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:58,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:58,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149485633] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:58,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:58,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:43:58,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008873610] [2025-03-09 06:43:58,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:58,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:43:58,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:58,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:43:58,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:43:58,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-09 06:43:58,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 80 flow. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 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) [2025-03-09 06:43:58,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:58,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-09 06:43:58,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:58,644 INFO L124 PetriNetUnfolderBase]: 167/303 cut-off events. [2025-03-09 06:43:58,644 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2025-03-09 06:43:58,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 303 events. 167/303 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1132 event pairs, 132 based on Foata normal form. 3/237 useless extension candidates. Maximal degree in co-relation 677. Up to 288 conditions per place. [2025-03-09 06:43:58,646 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 21 selfloop transitions, 12 changer transitions 0/36 dead transitions. [2025-03-09 06:43:58,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 176 flow [2025-03-09 06:43:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:43:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:43:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 86 transitions. [2025-03-09 06:43:58,647 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2529411764705882 [2025-03-09 06:43:58,647 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 80 flow. Second operand 10 states and 86 transitions. [2025-03-09 06:43:58,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 176 flow [2025-03-09 06:43:58,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:43:58,649 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 148 flow [2025-03-09 06:43:58,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=148, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2025-03-09 06:43:58,649 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2025-03-09 06:43:58,649 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 148 flow [2025-03-09 06:43:58,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 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) [2025-03-09 06:43:58,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:58,650 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:58,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:43:58,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-09 06:43:58,851 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 06:43:58,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:58,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1794480070, now seen corresponding path program 1 times [2025-03-09 06:43:58,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:58,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105143328] [2025-03-09 06:43:58,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:58,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:58,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:43:58,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:43:58,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:58,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:59,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:59,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105143328] [2025-03-09 06:43:59,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105143328] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:59,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982419115] [2025-03-09 06:43:59,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:59,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:59,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:59,024 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) [2025-03-09 06:43:59,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:43:59,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:43:59,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:43:59,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:59,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:59,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:43:59,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:59,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:43:59,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:43:59,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982419115] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:59,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:43:59,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-03-09 06:43:59,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690543867] [2025-03-09 06:43:59,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:59,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:59,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:59,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:59,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:43:59,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-03-09 06:43:59,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2025-03-09 06:43:59,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:59,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-03-09 06:43:59,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:59,133 INFO L124 PetriNetUnfolderBase]: 125/232 cut-off events. [2025-03-09 06:43:59,134 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2025-03-09 06:43:59,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 232 events. 125/232 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 794 event pairs, 94 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 500. Up to 223 conditions per place. [2025-03-09 06:43:59,136 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 10 selfloop transitions, 1 changer transitions 21/34 dead transitions. [2025-03-09 06:43:59,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 200 flow [2025-03-09 06:43:59,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2025-03-09 06:43:59,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2025-03-09 06:43:59,137 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 148 flow. Second operand 3 states and 42 transitions. [2025-03-09 06:43:59,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 200 flow [2025-03-09 06:43:59,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 190 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-09 06:43:59,141 INFO L231 Difference]: Finished difference. Result has 41 places, 13 transitions, 74 flow [2025-03-09 06:43:59,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=41, PETRI_TRANSITIONS=13} [2025-03-09 06:43:59,141 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2025-03-09 06:43:59,141 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 13 transitions, 74 flow [2025-03-09 06:43:59,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2025-03-09 06:43:59,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:59,141 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-09 06:43:59,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:43:59,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:59,342 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2025-03-09 06:43:59,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:59,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1683304652, now seen corresponding path program 2 times [2025-03-09 06:43:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195654139] [2025-03-09 06:43:59,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:43:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:59,350 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:43:59,353 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-09 06:43:59,355 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:43:59,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:59,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:59,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195654139] [2025-03-09 06:43:59,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195654139] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:59,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228736770] [2025-03-09 06:43:59,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:43:59,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:59,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:59,387 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) [2025-03-09 06:43:59,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:43:59,427 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:43:59,434 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-09 06:43:59,435 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:43:59,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:59,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:43:59,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:59,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:59,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228736770] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:59,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:59,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-09 06:43:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488183780] [2025-03-09 06:43:59,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:59,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:59,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:59,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:59,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:59,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2025-03-09 06:43:59,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 13 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2025-03-09 06:43:59,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:59,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2025-03-09 06:43:59,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:59,500 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2025-03-09 06:43:59,500 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2025-03-09 06:43:59,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 16 events. 1/16 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 47. Up to 6 conditions per place. [2025-03-09 06:43:59,501 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2025-03-09 06:43:59,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 12 transitions, 86 flow [2025-03-09 06:43:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:59,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:59,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2025-03-09 06:43:59,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.17647058823529413 [2025-03-09 06:43:59,502 INFO L175 Difference]: Start difference. First operand has 41 places, 13 transitions, 74 flow. Second operand 4 states and 24 transitions. [2025-03-09 06:43:59,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 12 transitions, 86 flow [2025-03-09 06:43:59,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 75 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-03-09 06:43:59,502 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2025-03-09 06:43:59,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2025-03-09 06:43:59,503 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, -13 predicate places. [2025-03-09 06:43:59,503 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2025-03-09 06:43:59,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2025-03-09 06:43:59,505 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2025-03-09 06:43:59,505 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2025-03-09 06:43:59,505 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2025-03-09 06:43:59,505 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2025-03-09 06:43:59,505 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2025-03-09 06:43:59,506 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2025-03-09 06:43:59,506 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2025-03-09 06:43:59,506 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2025-03-09 06:43:59,506 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2025-03-09 06:43:59,506 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2025-03-09 06:43:59,506 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2025-03-09 06:43:59,506 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2025-03-09 06:43:59,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:43:59,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:59,707 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2025-03-09 06:43:59,711 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 06:43:59,711 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 06:43:59,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 06:43:59 BasicIcfg [2025-03-09 06:43:59,714 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 06:43:59,714 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:43:59,714 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:43:59,715 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:43:59,715 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:43:56" (3/4) ... [2025-03-09 06:43:59,716 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 06:43:59,718 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-09 06:43:59,718 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-09 06:43:59,724 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 61 nodes and edges [2025-03-09 06:43:59,724 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2025-03-09 06:43:59,724 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-09 06:43:59,725 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-09 06:43:59,779 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 06:43:59,779 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 06:43:59,779 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:43:59,780 INFO L158 Benchmark]: Toolchain (without parser) took 3633.99ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 61.3MB in the end (delta: 43.9MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. [2025-03-09 06:43:59,780 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:43:59,780 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.80ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 93.3MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:43:59,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.72ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 91.8MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:43:59,780 INFO L158 Benchmark]: Boogie Preprocessor took 33.87ms. Allocated memory is still 142.6MB. Free memory was 91.8MB in the beginning and 90.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:43:59,781 INFO L158 Benchmark]: IcfgBuilder took 473.92ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 54.2MB in the end (delta: 36.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-09 06:43:59,781 INFO L158 Benchmark]: TraceAbstraction took 2833.23ms. Allocated memory is still 142.6MB. Free memory was 53.5MB in the beginning and 66.5MB in the end (delta: -13.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:43:59,781 INFO L158 Benchmark]: Witness Printer took 64.70ms. Allocated memory is still 142.6MB. Free memory was 66.5MB in the beginning and 61.3MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:43:59,782 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.80ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 93.3MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.72ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 91.8MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.87ms. Allocated memory is still 142.6MB. Free memory was 91.8MB in the beginning and 90.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 473.92ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 54.2MB in the end (delta: 36.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2833.23ms. Allocated memory is still 142.6MB. Free memory was 53.5MB in the beginning and 66.5MB in the end (delta: -13.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 64.70ms. Allocated memory is still 142.6MB. Free memory was 66.5MB in the beginning and 61.3MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: 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, 48 locations, 56 edges, 12 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: 2.7s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 369 IncrementalHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 6 mSDtfsCounter, 369 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=4, InterpolantAutomatonStates: 31, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 88 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 9 NumberOfNonLiveVariables, 302 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 69/105 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 06:43:59,793 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