./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:51:10,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:51:10,411 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:51:10,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:51:10,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:51:10,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:51:10,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:51:10,440 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:51:10,440 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:51:10,440 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:51:10,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:51:10,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:51:10,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:51:10,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:51:10,442 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:51:10,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:51:10,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:51:10,442 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:51:10,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:51:10,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:51:10,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:51:10,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:51:10,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:51:10,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:51:10,443 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:51:10,443 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:51:10,443 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:51:10,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:51:10,443 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:51:10,444 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:51:10,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:51:10,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:51:10,444 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-jdk21/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 -> a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 [2025-02-06 18:51:10,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:51:10,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:51:10,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:51:10,677 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:51:10,677 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:51:10,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2025-02-06 18:51:11,840 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/85c16627e/a1169030cda64bd6ba67d2ecab8fb041/FLAG5458fb28d [2025-02-06 18:51:12,061 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:51:12,080 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2025-02-06 18:51:12,102 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/85c16627e/a1169030cda64bd6ba67d2ecab8fb041/FLAG5458fb28d [2025-02-06 18:51:12,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/85c16627e/a1169030cda64bd6ba67d2ecab8fb041 [2025-02-06 18:51:12,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:51:12,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:51:12,415 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:51:12,415 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:51:12,418 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:51:12,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@319744dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12, skipping insertion in model container [2025-02-06 18:51:12,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,431 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:51:12,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:51:12,549 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:51:12,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:51:12,604 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:51:12,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12 WrapperNode [2025-02-06 18:51:12,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:51:12,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:51:12,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:51:12,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:51:12,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,651 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 337 [2025-02-06 18:51:12,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:51:12,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:51:12,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:51:12,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:51:12,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,679 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]. [2025-02-06 18:51:12,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,689 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:51:12,695 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:51:12,695 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:51:12,695 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:51:12,696 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (1/1) ... [2025-02-06 18:51:12,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:51:12,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:12,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:51:12,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:51:12,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:51:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:51:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:51:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:51:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:51:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 18:51:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 18:51:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 18:51:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 18:51:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:51:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:51:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:51:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:51:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:51:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:51:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:51:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:51:12,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:51:12,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:51:12,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:51:12,754 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:51:12,867 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:51:12,869 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:51:13,347 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:51:13,348 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:51:13,757 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:51:13,757 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:51:13,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:51:13 BoogieIcfgContainer [2025-02-06 18:51:13,757 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:51:13,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:51:13,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:51:13,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:51:13,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:51:12" (1/3) ... [2025-02-06 18:51:13,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4434b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:51:13, skipping insertion in model container [2025-02-06 18:51:13,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:51:12" (2/3) ... [2025-02-06 18:51:13,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4434b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:51:13, skipping insertion in model container [2025-02-06 18:51:13,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:51:13" (3/3) ... [2025-02-06 18:51:13,765 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2025-02-06 18:51:13,775 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:51:13,780 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt2.wvr.c that has 5 procedures, 75 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-02-06 18:51:13,780 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:51:13,884 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 18:51:13,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 188 flow [2025-02-06 18:51:13,945 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2025-02-06 18:51:13,947 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 18:51:13,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 76 events. 6/76 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 238 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2025-02-06 18:51:13,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 80 transitions, 188 flow [2025-02-06 18:51:13,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 74 transitions, 169 flow [2025-02-06 18:51:13,968 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:51:13,975 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;@71aedca5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:51:13,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2025-02-06 18:51:13,980 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:51:13,980 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:51:13,980 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:51:13,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:13,981 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:51:13,981 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-06 18:51:13,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:13,985 INFO L85 PathProgramCache]: Analyzing trace with hash 972724, now seen corresponding path program 1 times [2025-02-06 18:51:13,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:13,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096721869] [2025-02-06 18:51:13,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:14,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:51:14,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:51:14,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:14,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:14,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:14,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096721869] [2025-02-06 18:51:14,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096721869] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:14,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:14,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:51:14,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6886722] [2025-02-06 18:51:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:14,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:51:14,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:14,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:51:14,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:51:14,278 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 80 [2025-02-06 18:51:14,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-02-06 18:51:14,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:14,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 80 [2025-02-06 18:51:14,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:19,050 INFO L124 PetriNetUnfolderBase]: 41752/55202 cut-off events. [2025-02-06 18:51:19,051 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2025-02-06 18:51:19,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111367 conditions, 55202 events. 41752/55202 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 3802. Compared 366803 event pairs, 36178 based on Foata normal form. 2/29423 useless extension candidates. Maximal degree in co-relation 104146. Up to 54060 conditions per place. [2025-02-06 18:51:19,378 INFO L140 encePairwiseOnDemand]: 61/80 looper letters, 55 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2025-02-06 18:51:19,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 289 flow [2025-02-06 18:51:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:51:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:51:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2025-02-06 18:51:19,391 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40625 [2025-02-06 18:51:19,392 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 169 flow. Second operand 4 states and 130 transitions. [2025-02-06 18:51:19,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 289 flow [2025-02-06 18:51:19,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-06 18:51:19,473 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 200 flow [2025-02-06 18:51:19,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2025-02-06 18:51:19,478 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2025-02-06 18:51:19,478 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 200 flow [2025-02-06 18:51:19,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-02-06 18:51:19,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:19,478 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:51:19,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:51:19,479 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-06 18:51:19,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1085414182, now seen corresponding path program 1 times [2025-02-06 18:51:19,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:19,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254292244] [2025-02-06 18:51:19,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:19,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:19,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:51:19,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:51:19,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:19,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:19,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:19,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254292244] [2025-02-06 18:51:19,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254292244] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:19,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109886442] [2025-02-06 18:51:19,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:19,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:19,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:19,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:51:19,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:51:19,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:51:19,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:51:19,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:19,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:19,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:51:19,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:19,750 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:51:19,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109886442] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:19,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:51:19,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:51:19,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223014104] [2025-02-06 18:51:19,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:19,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:51:19,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:19,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:51:19,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:51:19,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 80 [2025-02-06 18:51:19,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-02-06 18:51:19,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:19,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 80 [2025-02-06 18:51:19,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:24,071 INFO L124 PetriNetUnfolderBase]: 41752/55200 cut-off events. [2025-02-06 18:51:24,071 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2025-02-06 18:51:24,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110494 conditions, 55200 events. 41752/55200 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 3802. Compared 367292 event pairs, 36178 based on Foata normal form. 2/29424 useless extension candidates. Maximal degree in co-relation 110444. Up to 54050 conditions per place. [2025-02-06 18:51:24,344 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 48 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2025-02-06 18:51:24,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 312 flow [2025-02-06 18:51:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:51:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:51:24,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2025-02-06 18:51:24,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30416666666666664 [2025-02-06 18:51:24,346 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 200 flow. Second operand 6 states and 146 transitions. [2025-02-06 18:51:24,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 312 flow [2025-02-06 18:51:24,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:51:24,347 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 216 flow [2025-02-06 18:51:24,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2025-02-06 18:51:24,348 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2025-02-06 18:51:24,348 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 216 flow [2025-02-06 18:51:24,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-02-06 18:51:24,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:24,348 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:51:24,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:51:24,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:24,549 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-06 18:51:24,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:24,550 INFO L85 PathProgramCache]: Analyzing trace with hash 711899668, now seen corresponding path program 1 times [2025-02-06 18:51:24,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:24,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661302158] [2025-02-06 18:51:24,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:24,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:24,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:51:24,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:51:24,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:24,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:24,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:24,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661302158] [2025-02-06 18:51:24,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661302158] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:24,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239816326] [2025-02-06 18:51:24,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:24,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:24,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:24,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:51:24,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:51:24,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:51:24,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:51:24,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:24,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:24,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:51:24,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:24,761 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:51:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:24,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239816326] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:51:24,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:51:24,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:51:24,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786054025] [2025-02-06 18:51:24,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:51:24,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:51:24,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:24,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:51:24,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:51:24,820 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 80 [2025-02-06 18:51:24,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2025-02-06 18:51:24,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:24,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 80 [2025-02-06 18:51:24,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:29,270 INFO L124 PetriNetUnfolderBase]: 41758/55224 cut-off events. [2025-02-06 18:51:29,270 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2025-02-06 18:51:29,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110588 conditions, 55224 events. 41758/55224 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 3802. Compared 367476 event pairs, 36178 based on Foata normal form. 6/29451 useless extension candidates. Maximal degree in co-relation 110446. Up to 54061 conditions per place. [2025-02-06 18:51:29,569 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 53 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2025-02-06 18:51:29,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 486 flow [2025-02-06 18:51:29,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:51:29,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:51:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2025-02-06 18:51:29,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28 [2025-02-06 18:51:29,571 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 216 flow. Second operand 10 states and 224 transitions. [2025-02-06 18:51:29,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 486 flow [2025-02-06 18:51:29,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-06 18:51:29,573 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 356 flow [2025-02-06 18:51:29,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2025-02-06 18:51:29,574 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2025-02-06 18:51:29,574 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 356 flow [2025-02-06 18:51:29,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2025-02-06 18:51:29,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:29,574 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:29,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 18:51:29,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:29,779 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-06 18:51:29,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1963883913, now seen corresponding path program 1 times [2025-02-06 18:51:29,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:29,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267023706] [2025-02-06 18:51:29,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:29,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:29,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:51:29,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:51:29,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:29,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:29,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:29,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267023706] [2025-02-06 18:51:29,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267023706] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:29,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:29,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:51:29,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115203739] [2025-02-06 18:51:29,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:29,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:51:29,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:29,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:51:29,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:51:29,988 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 80 [2025-02-06 18:51:29,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2025-02-06 18:51:29,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:29,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 80 [2025-02-06 18:51:29,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:35,928 INFO L124 PetriNetUnfolderBase]: 47068/62672 cut-off events. [2025-02-06 18:51:35,928 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2025-02-06 18:51:36,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125557 conditions, 62672 events. 47068/62672 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 3884. Compared 416093 event pairs, 41078 based on Foata normal form. 1162/37066 useless extension candidates. Maximal degree in co-relation 125461. Up to 54076 conditions per place. [2025-02-06 18:51:36,247 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 121 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2025-02-06 18:51:36,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 136 transitions, 781 flow [2025-02-06 18:51:36,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:51:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:51:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2025-02-06 18:51:36,248 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.540625 [2025-02-06 18:51:36,248 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 356 flow. Second operand 4 states and 173 transitions. [2025-02-06 18:51:36,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 136 transitions, 781 flow [2025-02-06 18:51:36,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 136 transitions, 747 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-06 18:51:36,251 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 359 flow [2025-02-06 18:51:36,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=359, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2025-02-06 18:51:36,252 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2025-02-06 18:51:36,252 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 359 flow [2025-02-06 18:51:36,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2025-02-06 18:51:36,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:36,252 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:36,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:51:36,252 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-06 18:51:36,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:36,253 INFO L85 PathProgramCache]: Analyzing trace with hash 846228894, now seen corresponding path program 1 times [2025-02-06 18:51:36,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:36,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504063159] [2025-02-06 18:51:36,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:36,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:36,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:51:36,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:51:36,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:36,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:36,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:36,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504063159] [2025-02-06 18:51:36,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504063159] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:36,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:36,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:51:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039929341] [2025-02-06 18:51:36,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:36,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:51:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:36,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:51:36,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:51:36,292 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 80 [2025-02-06 18:51:36,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 359 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:51:36,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:36,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 80 [2025-02-06 18:51:36,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:39,964 INFO L124 PetriNetUnfolderBase]: 41867/55759 cut-off events. [2025-02-06 18:51:39,964 INFO L125 PetriNetUnfolderBase]: For 2917/2917 co-relation queries the response was YES. [2025-02-06 18:51:40,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124747 conditions, 55759 events. 41867/55759 cut-off events. For 2917/2917 co-relation queries the response was YES. Maximal size of possible extension queue 3458. Compared 371283 event pairs, 36364 based on Foata normal form. 0/31576 useless extension candidates. Maximal degree in co-relation 124653. Up to 54589 conditions per place. [2025-02-06 18:51:40,318 INFO L140 encePairwiseOnDemand]: 78/80 looper letters, 74 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2025-02-06 18:51:40,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 507 flow [2025-02-06 18:51:40,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:51:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:51:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2025-02-06 18:51:40,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2025-02-06 18:51:40,320 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 359 flow. Second operand 3 states and 106 transitions. [2025-02-06 18:51:40,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 507 flow [2025-02-06 18:51:40,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 503 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 18:51:40,330 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 355 flow [2025-02-06 18:51:40,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=355, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2025-02-06 18:51:40,331 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2025-02-06 18:51:40,331 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 355 flow [2025-02-06 18:51:40,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:51:40,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:40,331 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:51:40,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:51:40,332 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-06 18:51:40,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:40,332 INFO L85 PathProgramCache]: Analyzing trace with hash 846228895, now seen corresponding path program 1 times [2025-02-06 18:51:40,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:40,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280670916] [2025-02-06 18:51:40,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:40,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:40,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:51:40,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:51:40,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:40,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:40,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:40,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280670916] [2025-02-06 18:51:40,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280670916] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:40,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:51:40,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:51:40,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580837738] [2025-02-06 18:51:40,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:40,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:51:40,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:40,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:51:40,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:51:40,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 80 [2025-02-06 18:51:40,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:51:40,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:40,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 80 [2025-02-06 18:51:40,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand