./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-min-max-1.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/parallel-min-max-1.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 bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:50:09,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:50:09,961 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:50:09,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:50:09,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:50:10,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:50:10,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:50:10,003 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:50:10,003 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:50:10,004 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:50:10,004 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:50:10,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:50:10,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:50:10,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:50:10,005 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:50:10,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:50:10,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:50:10,006 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:50:10,006 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:50:10,006 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:50:10,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:50:10,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:50:10,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:50:10,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:50:10,007 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:50:10,007 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:50:10,007 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:50:10,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:50:10,007 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:50:10,007 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:50:10,008 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:50:10,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:50:10,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:50:10,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:50:10,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:50:10,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:50:10,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:50:10,009 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:50:10,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:50:10,009 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:50:10,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:50:10,009 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:50:10,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:50:10,010 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:50:10,010 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:50:10,010 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 -> bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 [2025-02-06 18:50:10,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:50:10,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:50:10,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:50:10,339 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:50:10,339 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:50:10,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2025-02-06 18:50:11,674 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff4bf2f5e/c2dc3b77decb448c85c06efe73137e60/FLAGfeb75685a [2025-02-06 18:50:11,984 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:50:11,985 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2025-02-06 18:50:12,002 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff4bf2f5e/c2dc3b77decb448c85c06efe73137e60/FLAGfeb75685a [2025-02-06 18:50:12,028 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff4bf2f5e/c2dc3b77decb448c85c06efe73137e60 [2025-02-06 18:50:12,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:50:12,033 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:50:12,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:50:12,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:50:12,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:50:12,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381a79d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12, skipping insertion in model container [2025-02-06 18:50:12,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,059 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:50:12,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:50:12,247 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:50:12,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:50:12,297 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:50:12,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12 WrapperNode [2025-02-06 18:50:12,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:50:12,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:50:12,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:50:12,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:50:12,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,338 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 121 [2025-02-06 18:50:12,339 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:50:12,340 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:50:12,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:50:12,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:50:12,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,349 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,365 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2025-02-06 18:50:12,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,366 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,377 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:50:12,390 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:50:12,390 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:50:12,390 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:50:12,391 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (1/1) ... [2025-02-06 18:50:12,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:50:12,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:12,423 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 18:50:12,427 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 18:50:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:50:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:50:12,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:50:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:50:12,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:50:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 18:50:12,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 18:50:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:50:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:50:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:50:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:50:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:50:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:50:12,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:50:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:50:12,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:50:12,449 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 18:50:12,532 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:50:12,534 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:50:12,825 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:50:12,826 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:50:12,994 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:50:12,994 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:50:12,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:50:12 BoogieIcfgContainer [2025-02-06 18:50:12,995 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:50:12,997 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:50:12,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:50:13,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:50:13,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:50:12" (1/3) ... [2025-02-06 18:50:13,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2547112f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:50:13, skipping insertion in model container [2025-02-06 18:50:13,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:12" (2/3) ... [2025-02-06 18:50:13,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2547112f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:50:13, skipping insertion in model container [2025-02-06 18:50:13,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:50:12" (3/3) ... [2025-02-06 18:50:13,004 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2025-02-06 18:50:13,015 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:50:13,016 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-min-max-1.wvr.c that has 4 procedures, 61 locations, 1 initial locations, 3 loop locations, and 6 error locations. [2025-02-06 18:50:13,017 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:50:13,080 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 18:50:13,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 65 transitions, 151 flow [2025-02-06 18:50:13,144 INFO L124 PetriNetUnfolderBase]: 5/62 cut-off events. [2025-02-06 18:50:13,148 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 18:50:13,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 5/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2025-02-06 18:50:13,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 65 transitions, 151 flow [2025-02-06 18:50:13,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 59 transitions, 130 flow [2025-02-06 18:50:13,162 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:50:13,178 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;@794f3dfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:50:13,178 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-02-06 18:50:13,190 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:50:13,190 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2025-02-06 18:50:13,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:50:13,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:13,191 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:13,192 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:13,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:13,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1504611625, now seen corresponding path program 1 times [2025-02-06 18:50:13,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:13,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310566118] [2025-02-06 18:50:13,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:13,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:13,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:50:13,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:50:13,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:13,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:13,558 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 18:50:13,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:13,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310566118] [2025-02-06 18:50:13,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310566118] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:13,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:13,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:50:13,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276284612] [2025-02-06 18:50:13,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:13,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:13,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:13,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:13,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:50:13,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2025-02-06 18:50:13,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 18:50:13,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:13,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2025-02-06 18:50:13,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:14,103 INFO L124 PetriNetUnfolderBase]: 1696/2949 cut-off events. [2025-02-06 18:50:14,104 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2025-02-06 18:50:14,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5542 conditions, 2949 events. 1696/2949 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17510 event pairs, 1262 based on Foata normal form. 1/2362 useless extension candidates. Maximal degree in co-relation 5306. Up to 2392 conditions per place. [2025-02-06 18:50:14,136 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 44 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2025-02-06 18:50:14,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 232 flow [2025-02-06 18:50:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2025-02-06 18:50:14,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2025-02-06 18:50:14,151 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 130 flow. Second operand 4 states and 118 transitions. [2025-02-06 18:50:14,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 232 flow [2025-02-06 18:50:14,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 226 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:50:14,163 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 153 flow [2025-02-06 18:50:14,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2025-02-06 18:50:14,168 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2025-02-06 18:50:14,168 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 153 flow [2025-02-06 18:50:14,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 18:50:14,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:14,169 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:14,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:50:14,169 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:14,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:14,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1606580344, now seen corresponding path program 1 times [2025-02-06 18:50:14,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:14,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345378168] [2025-02-06 18:50:14,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:14,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:14,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:50:14,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:50:14,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:14,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:14,366 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 18:50:14,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:14,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345378168] [2025-02-06 18:50:14,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345378168] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:14,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040444682] [2025-02-06 18:50:14,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:14,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:14,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:14,370 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 18:50:14,380 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 18:50:14,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:50:14,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:50:14,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:14,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:14,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:14,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:14,518 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 18:50:14,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:50:14,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040444682] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:14,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:50:14,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:50:14,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031545340] [2025-02-06 18:50:14,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:14,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:50:14,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:14,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:50:14,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:50:14,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2025-02-06 18:50:14,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:14,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:14,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2025-02-06 18:50:14,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:14,921 INFO L124 PetriNetUnfolderBase]: 1696/2948 cut-off events. [2025-02-06 18:50:14,921 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-02-06 18:50:14,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5523 conditions, 2948 events. 1696/2948 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17548 event pairs, 1262 based on Foata normal form. 1/2362 useless extension candidates. Maximal degree in co-relation 5496. Up to 2387 conditions per place. [2025-02-06 18:50:14,947 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 40 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2025-02-06 18:50:14,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 243 flow [2025-02-06 18:50:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:50:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:50:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2025-02-06 18:50:14,950 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2025-02-06 18:50:14,950 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 153 flow. Second operand 6 states and 150 transitions. [2025-02-06 18:50:14,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 243 flow [2025-02-06 18:50:14,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:14,954 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 160 flow [2025-02-06 18:50:14,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2025-02-06 18:50:14,956 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2025-02-06 18:50:14,956 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 160 flow [2025-02-06 18:50:14,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:14,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:14,956 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:14,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 18:50:15,157 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 18:50:15,157 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:15,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:15,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1735616526, now seen corresponding path program 1 times [2025-02-06 18:50:15,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:15,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624536290] [2025-02-06 18:50:15,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:15,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:15,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:50:15,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:50:15,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:15,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:15,324 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 18:50:15,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:15,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624536290] [2025-02-06 18:50:15,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624536290] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:15,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924253201] [2025-02-06 18:50:15,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:15,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:15,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:15,329 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 18:50:15,332 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 18:50:15,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:50:15,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:50:15,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:15,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:15,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:15,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:15,437 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 18:50:15,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:15,499 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 18:50:15,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924253201] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:15,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:15,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:50:15,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925173693] [2025-02-06 18:50:15,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:15,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:50:15,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:15,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:50:15,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:50:15,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2025-02-06 18:50:15,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 160 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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 18:50:15,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:15,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2025-02-06 18:50:15,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:15,944 INFO L124 PetriNetUnfolderBase]: 1699/2960 cut-off events. [2025-02-06 18:50:15,944 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2025-02-06 18:50:15,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5567 conditions, 2960 events. 1699/2960 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17596 event pairs, 1262 based on Foata normal form. 3/2374 useless extension candidates. Maximal degree in co-relation 5497. Up to 2394 conditions per place. [2025-02-06 18:50:15,965 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 43 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2025-02-06 18:50:15,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 326 flow [2025-02-06 18:50:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:50:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:50:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 229 transitions. [2025-02-06 18:50:15,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3523076923076923 [2025-02-06 18:50:15,968 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 160 flow. Second operand 10 states and 229 transitions. [2025-02-06 18:50:15,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 326 flow [2025-02-06 18:50:15,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 280 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-02-06 18:50:15,973 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 212 flow [2025-02-06 18:50:15,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=212, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2025-02-06 18:50:15,974 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2025-02-06 18:50:15,975 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 212 flow [2025-02-06 18:50:15,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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 18:50:15,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:15,975 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:15,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:50:16,176 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 18:50:16,176 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:16,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:16,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1120825003, now seen corresponding path program 1 times [2025-02-06 18:50:16,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:16,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921305893] [2025-02-06 18:50:16,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:16,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:16,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 18:50:16,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 18:50:16,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:16,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:16,274 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 18:50:16,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:16,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921305893] [2025-02-06 18:50:16,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921305893] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:16,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:16,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:50:16,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593470924] [2025-02-06 18:50:16,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:16,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:16,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:16,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:16,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:50:16,282 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-02-06 18:50:16,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 18:50:16,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:16,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-02-06 18:50:16,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:16,835 INFO L124 PetriNetUnfolderBase]: 3162/4851 cut-off events. [2025-02-06 18:50:16,835 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2025-02-06 18:50:16,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9686 conditions, 4851 events. 3162/4851 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 26138 event pairs, 1721 based on Foata normal form. 74/4068 useless extension candidates. Maximal degree in co-relation 9652. Up to 3166 conditions per place. [2025-02-06 18:50:16,863 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 94 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2025-02-06 18:50:16,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 109 transitions, 494 flow [2025-02-06 18:50:16,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2025-02-06 18:50:16,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5692307692307692 [2025-02-06 18:50:16,867 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 212 flow. Second operand 4 states and 148 transitions. [2025-02-06 18:50:16,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 109 transitions, 494 flow [2025-02-06 18:50:16,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 109 transitions, 483 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 18:50:16,869 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 230 flow [2025-02-06 18:50:16,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2025-02-06 18:50:16,872 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2025-02-06 18:50:16,872 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 230 flow [2025-02-06 18:50:16,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 18:50:16,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:16,873 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:16,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:50:16,874 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:16,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash 138767944, now seen corresponding path program 1 times [2025-02-06 18:50:16,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:16,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980100677] [2025-02-06 18:50:16,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:16,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:16,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:50:16,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:50:16,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:16,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:16,951 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 18:50:16,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:16,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980100677] [2025-02-06 18:50:16,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980100677] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:16,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:16,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:50:16,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203667752] [2025-02-06 18:50:16,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:16,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:16,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:16,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:16,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:50:16,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-02-06 18:50:16,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 18:50:16,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:16,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-02-06 18:50:16,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:17,583 INFO L124 PetriNetUnfolderBase]: 4294/6570 cut-off events. [2025-02-06 18:50:17,584 INFO L125 PetriNetUnfolderBase]: For 615/892 co-relation queries the response was YES. [2025-02-06 18:50:17,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14146 conditions, 6570 events. 4294/6570 cut-off events. For 615/892 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 35970 event pairs, 2336 based on Foata normal form. 296/6050 useless extension candidates. Maximal degree in co-relation 14110. Up to 4266 conditions per place. [2025-02-06 18:50:17,624 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 98 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2025-02-06 18:50:17,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 114 transitions, 542 flow [2025-02-06 18:50:17,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:17,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2025-02-06 18:50:17,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5615384615384615 [2025-02-06 18:50:17,626 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 230 flow. Second operand 4 states and 146 transitions. [2025-02-06 18:50:17,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 114 transitions, 542 flow [2025-02-06 18:50:17,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 535 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:17,634 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 256 flow [2025-02-06 18:50:17,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2025-02-06 18:50:17,634 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2025-02-06 18:50:17,634 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 256 flow [2025-02-06 18:50:17,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 18:50:17,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:17,635 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:17,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:50:17,635 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:17,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:17,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1329866273, now seen corresponding path program 2 times [2025-02-06 18:50:17,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:17,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259151964] [2025-02-06 18:50:17,636 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:17,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:17,646 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:50:17,653 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 28 statements. [2025-02-06 18:50:17,654 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:50:17,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:50:17,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:17,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259151964] [2025-02-06 18:50:17,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259151964] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:17,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963917384] [2025-02-06 18:50:17,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:17,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:17,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:17,886 INFO L229 MonitoredProcess]: Starting monitored process 4 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 18:50:17,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:50:17,945 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:50:17,960 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 28 statements. [2025-02-06 18:50:17,960 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:50:17,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:17,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 18:50:17,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:50:18,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:50:18,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963917384] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:18,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:18,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-02-06 18:50:18,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492392817] [2025-02-06 18:50:18,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:18,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:50:18,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:18,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:50:18,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:50:18,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2025-02-06 18:50:18,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:18,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:18,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2025-02-06 18:50:18,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:18,673 INFO L124 PetriNetUnfolderBase]: 3129/5311 cut-off events. [2025-02-06 18:50:18,673 INFO L125 PetriNetUnfolderBase]: For 827/1097 co-relation queries the response was YES. [2025-02-06 18:50:18,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11755 conditions, 5311 events. 3129/5311 cut-off events. For 827/1097 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 32446 event pairs, 2336 based on Foata normal form. 207/5061 useless extension candidates. Maximal degree in co-relation 11722. Up to 4351 conditions per place. [2025-02-06 18:50:18,702 INFO L140 encePairwiseOnDemand]: 57/65 looper letters, 40 selfloop transitions, 19 changer transitions 0/75 dead transitions. [2025-02-06 18:50:18,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 364 flow [2025-02-06 18:50:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:50:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:50:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2025-02-06 18:50:18,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37435897435897436 [2025-02-06 18:50:18,705 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 256 flow. Second operand 6 states and 146 transitions. [2025-02-06 18:50:18,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 364 flow [2025-02-06 18:50:18,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 351 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-06 18:50:18,716 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 271 flow [2025-02-06 18:50:18,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2025-02-06 18:50:18,717 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2025-02-06 18:50:18,717 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 271 flow [2025-02-06 18:50:18,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:18,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:18,717 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:18,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 18:50:18,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:18,918 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:18,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1044292820, now seen corresponding path program 1 times [2025-02-06 18:50:18,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:18,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657718726] [2025-02-06 18:50:18,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:18,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 18:50:18,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 18:50:18,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:18,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 18:50:19,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:19,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657718726] [2025-02-06 18:50:19,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657718726] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:19,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:19,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:50:19,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113974025] [2025-02-06 18:50:19,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:19,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:19,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:19,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:19,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:50:19,010 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2025-02-06 18:50:19,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 18:50:19,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:19,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2025-02-06 18:50:19,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:19,431 INFO L124 PetriNetUnfolderBase]: 3128/5310 cut-off events. [2025-02-06 18:50:19,432 INFO L125 PetriNetUnfolderBase]: For 817/1087 co-relation queries the response was YES. [2025-02-06 18:50:19,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11563 conditions, 5310 events. 3128/5310 cut-off events. For 817/1087 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 32371 event pairs, 2336 based on Foata normal form. 206/5056 useless extension candidates. Maximal degree in co-relation 11460. Up to 4355 conditions per place. [2025-02-06 18:50:19,461 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 55 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2025-02-06 18:50:19,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 74 transitions, 382 flow [2025-02-06 18:50:19,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2025-02-06 18:50:19,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2025-02-06 18:50:19,462 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 271 flow. Second operand 4 states and 122 transitions. [2025-02-06 18:50:19,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 74 transitions, 382 flow [2025-02-06 18:50:19,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 346 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 18:50:19,472 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 236 flow [2025-02-06 18:50:19,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2025-02-06 18:50:19,473 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2025-02-06 18:50:19,474 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 236 flow [2025-02-06 18:50:19,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 18:50:19,475 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:19,476 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:19,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:50:19,476 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:19,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:19,476 INFO L85 PathProgramCache]: Analyzing trace with hash -867100189, now seen corresponding path program 1 times [2025-02-06 18:50:19,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:19,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445740470] [2025-02-06 18:50:19,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:19,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:19,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 18:50:19,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:50:19,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:19,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:50:19,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:19,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445740470] [2025-02-06 18:50:19,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445740470] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:19,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984770203] [2025-02-06 18:50:19,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:19,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:19,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:19,582 INFO L229 MonitoredProcess]: Starting monitored process 5 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 18:50:19,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:50:19,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 18:50:19,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:50:19,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:19,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:19,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:50:19,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:19,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:19,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984770203] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:19,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:19,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-06 18:50:19,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796313619] [2025-02-06 18:50:19,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:19,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:50:19,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:19,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:50:19,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:50:20,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 65 [2025-02-06 18:50:20,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 236 flow. Second operand has 19 states, 19 states have (on average 15.947368421052632) internal successors, (303), 19 states have internal predecessors, (303), 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 18:50:20,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:20,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 65 [2025-02-06 18:50:20,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:21,428 INFO L124 PetriNetUnfolderBase]: 6745/10352 cut-off events. [2025-02-06 18:50:21,428 INFO L125 PetriNetUnfolderBase]: For 1606/2082 co-relation queries the response was YES. [2025-02-06 18:50:21,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23346 conditions, 10352 events. 6745/10352 cut-off events. For 1606/2082 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 61760 event pairs, 1900 based on Foata normal form. 496/9942 useless extension candidates. Maximal degree in co-relation 23302. Up to 1850 conditions per place. [2025-02-06 18:50:21,480 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 191 selfloop transitions, 25 changer transitions 8/235 dead transitions. [2025-02-06 18:50:21,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 235 transitions, 1114 flow [2025-02-06 18:50:21,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:50:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:50:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 384 transitions. [2025-02-06 18:50:21,483 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.421978021978022 [2025-02-06 18:50:21,483 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 236 flow. Second operand 14 states and 384 transitions. [2025-02-06 18:50:21,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 235 transitions, 1114 flow [2025-02-06 18:50:21,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 235 transitions, 1108 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:50:21,500 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 302 flow [2025-02-06 18:50:21,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=302, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2025-02-06 18:50:21,502 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 25 predicate places. [2025-02-06 18:50:21,502 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 302 flow [2025-02-06 18:50:21,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.947368421052632) internal successors, (303), 19 states have internal predecessors, (303), 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 18:50:21,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:21,503 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:21,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 18:50:21,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-06 18:50:21,704 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:21,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash -161791818, now seen corresponding path program 1 times [2025-02-06 18:50:21,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:21,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474499351] [2025-02-06 18:50:21,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:21,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:21,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 18:50:21,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 18:50:21,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:21,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:50:21,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:21,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474499351] [2025-02-06 18:50:21,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474499351] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:21,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342038656] [2025-02-06 18:50:21,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:21,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:21,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:21,810 INFO L229 MonitoredProcess]: Starting monitored process 6 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 18:50:21,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:50:21,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 18:50:21,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 18:50:21,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:21,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:21,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:50:21,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:22,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:22,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342038656] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:22,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:22,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-06 18:50:22,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038229688] [2025-02-06 18:50:22,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:22,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:50:22,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:22,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:50:22,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:50:22,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 65 [2025-02-06 18:50:22,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 302 flow. Second operand has 19 states, 19 states have (on average 16.157894736842106) internal successors, (307), 19 states have internal predecessors, (307), 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 18:50:22,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:22,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 65 [2025-02-06 18:50:22,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:23,669 INFO L124 PetriNetUnfolderBase]: 6372/9769 cut-off events. [2025-02-06 18:50:23,669 INFO L125 PetriNetUnfolderBase]: For 3840/3922 co-relation queries the response was YES. [2025-02-06 18:50:23,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23501 conditions, 9769 events. 6372/9769 cut-off events. For 3840/3922 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 57155 event pairs, 1825 based on Foata normal form. 185/9140 useless extension candidates. Maximal degree in co-relation 16152. Up to 1747 conditions per place. [2025-02-06 18:50:23,698 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 128 selfloop transitions, 19 changer transitions 72/229 dead transitions. [2025-02-06 18:50:23,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 229 transitions, 1213 flow [2025-02-06 18:50:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:50:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:50:23,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 377 transitions. [2025-02-06 18:50:23,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2025-02-06 18:50:23,701 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 302 flow. Second operand 14 states and 377 transitions. [2025-02-06 18:50:23,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 229 transitions, 1213 flow [2025-02-06 18:50:23,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 229 transitions, 1136 flow, removed 11 selfloop flow, removed 7 redundant places. [2025-02-06 18:50:23,718 INFO L231 Difference]: Finished difference. Result has 95 places, 71 transitions, 272 flow [2025-02-06 18:50:23,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=272, PETRI_PLACES=95, PETRI_TRANSITIONS=71} [2025-02-06 18:50:23,719 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 31 predicate places. [2025-02-06 18:50:23,719 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 71 transitions, 272 flow [2025-02-06 18:50:23,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.157894736842106) internal successors, (307), 19 states have internal predecessors, (307), 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 18:50:23,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:23,720 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:23,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 18:50:23,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:23,920 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:23,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1685420454, now seen corresponding path program 1 times [2025-02-06 18:50:23,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:23,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170123724] [2025-02-06 18:50:23,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:23,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:23,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 18:50:23,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 18:50:23,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:23,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:50:24,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:24,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170123724] [2025-02-06 18:50:24,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170123724] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:24,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798269590] [2025-02-06 18:50:24,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:24,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:24,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:24,046 INFO L229 MonitoredProcess]: Starting monitored process 7 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 18:50:24,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:50:24,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 18:50:24,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 18:50:24,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:24,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:24,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:24,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:50:24,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:50:24,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798269590] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:24,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:24,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:50:24,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307202052] [2025-02-06 18:50:24,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:24,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:50:24,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:24,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:50:24,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:50:24,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-02-06 18:50:24,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 71 transitions, 272 flow. Second operand has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 12 states have internal predecessors, (223), 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 18:50:24,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:24,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-02-06 18:50:24,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:25,277 INFO L124 PetriNetUnfolderBase]: 8642/12993 cut-off events. [2025-02-06 18:50:25,277 INFO L125 PetriNetUnfolderBase]: For 5863/6007 co-relation queries the response was YES. [2025-02-06 18:50:25,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31903 conditions, 12993 events. 8642/12993 cut-off events. For 5863/6007 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 72313 event pairs, 2599 based on Foata normal form. 318/12199 useless extension candidates. Maximal degree in co-relation 31802. Up to 4812 conditions per place. [2025-02-06 18:50:25,334 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 217 selfloop transitions, 13 changer transitions 0/240 dead transitions. [2025-02-06 18:50:25,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 240 transitions, 1278 flow [2025-02-06 18:50:25,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:50:25,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:50:25,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 355 transitions. [2025-02-06 18:50:25,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2025-02-06 18:50:25,336 INFO L175 Difference]: Start difference. First operand has 95 places, 71 transitions, 272 flow. Second operand 10 states and 355 transitions. [2025-02-06 18:50:25,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 240 transitions, 1278 flow [2025-02-06 18:50:25,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 240 transitions, 1172 flow, removed 24 selfloop flow, removed 11 redundant places. [2025-02-06 18:50:25,355 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 324 flow [2025-02-06 18:50:25,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2025-02-06 18:50:25,355 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2025-02-06 18:50:25,355 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 324 flow [2025-02-06 18:50:25,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 12 states have internal predecessors, (223), 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 18:50:25,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:25,356 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:25,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 18:50:25,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 18:50:25,560 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:25,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1613825410, now seen corresponding path program 1 times [2025-02-06 18:50:25,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:25,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689308819] [2025-02-06 18:50:25,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:25,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:25,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 18:50:25,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 18:50:25,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:25,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:50:25,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:25,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689308819] [2025-02-06 18:50:25,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689308819] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:25,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206755320] [2025-02-06 18:50:25,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:25,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:25,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:25,677 INFO L229 MonitoredProcess]: Starting monitored process 8 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 18:50:25,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 18:50:25,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 18:50:25,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 18:50:25,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:25,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:25,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:25,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:50:25,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:50:25,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206755320] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:25,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:25,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:50:25,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651173373] [2025-02-06 18:50:25,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:25,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:50:25,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:25,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:50:25,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:50:25,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-02-06 18:50:25,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 324 flow. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 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 18:50:25,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:25,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-02-06 18:50:25,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:27,519 INFO L124 PetriNetUnfolderBase]: 17686/26066 cut-off events. [2025-02-06 18:50:27,519 INFO L125 PetriNetUnfolderBase]: For 15479/15799 co-relation queries the response was YES. [2025-02-06 18:50:27,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64215 conditions, 26066 events. 17686/26066 cut-off events. For 15479/15799 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 150382 event pairs, 4967 based on Foata normal form. 618/24272 useless extension candidates. Maximal degree in co-relation 64121. Up to 9428 conditions per place. [2025-02-06 18:50:27,634 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 263 selfloop transitions, 13 changer transitions 0/289 dead transitions. [2025-02-06 18:50:27,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 289 transitions, 1750 flow [2025-02-06 18:50:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:50:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:50:27,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 347 transitions. [2025-02-06 18:50:27,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5338461538461539 [2025-02-06 18:50:27,637 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 324 flow. Second operand 10 states and 347 transitions. [2025-02-06 18:50:27,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 289 transitions, 1750 flow [2025-02-06 18:50:27,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 289 transitions, 1675 flow, removed 27 selfloop flow, removed 2 redundant places. [2025-02-06 18:50:27,665 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 399 flow [2025-02-06 18:50:27,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=399, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2025-02-06 18:50:27,666 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 36 predicate places. [2025-02-06 18:50:27,666 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 399 flow [2025-02-06 18:50:27,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 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 18:50:27,666 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:27,666 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:27,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 18:50:27,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:27,867 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:27,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:27,867 INFO L85 PathProgramCache]: Analyzing trace with hash 493020847, now seen corresponding path program 2 times [2025-02-06 18:50:27,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:27,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149382564] [2025-02-06 18:50:27,868 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:27,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:27,877 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-02-06 18:50:27,890 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 18:50:27,890 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:50:27,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:27,989 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-06 18:50:27,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:27,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149382564] [2025-02-06 18:50:27,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149382564] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:27,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771979281] [2025-02-06 18:50:27,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:27,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:27,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:27,992 INFO L229 MonitoredProcess]: Starting monitored process 9 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 18:50:27,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 18:50:28,051 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-02-06 18:50:28,077 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 18:50:28,077 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:50:28,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:28,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:28,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-06 18:50:28,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:28,199 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-06 18:50:28,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771979281] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:28,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:28,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-02-06 18:50:28,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3222347] [2025-02-06 18:50:28,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:28,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:50:28,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:28,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:50:28,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:50:28,216 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-02-06 18:50:28,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 399 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:28,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:28,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-02-06 18:50:28,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:29,836 INFO L124 PetriNetUnfolderBase]: 17139/25160 cut-off events. [2025-02-06 18:50:29,837 INFO L125 PetriNetUnfolderBase]: For 19816/20099 co-relation queries the response was YES. [2025-02-06 18:50:29,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64802 conditions, 25160 events. 17139/25160 cut-off events. For 19816/20099 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 146786 event pairs, 4233 based on Foata normal form. 202/22893 useless extension candidates. Maximal degree in co-relation 64704. Up to 12098 conditions per place. [2025-02-06 18:50:29,938 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 93 selfloop transitions, 16 changer transitions 15/137 dead transitions. [2025-02-06 18:50:29,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 137 transitions, 845 flow [2025-02-06 18:50:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:50:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:50:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-02-06 18:50:29,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2025-02-06 18:50:29,939 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 399 flow. Second operand 6 states and 170 transitions. [2025-02-06 18:50:29,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 137 transitions, 845 flow [2025-02-06 18:50:30,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 137 transitions, 808 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-02-06 18:50:30,038 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 387 flow [2025-02-06 18:50:30,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2025-02-06 18:50:30,038 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 35 predicate places. [2025-02-06 18:50:30,038 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 387 flow [2025-02-06 18:50:30,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:30,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:30,039 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:30,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 18:50:30,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:30,239 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:50:30,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1222000831, now seen corresponding path program 2 times [2025-02-06 18:50:30,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:30,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579318790] [2025-02-06 18:50:30,240 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:30,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:30,247 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-06 18:50:30,252 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 18:50:30,252 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:50:30,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-06 18:50:30,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:30,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579318790] [2025-02-06 18:50:30,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579318790] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:30,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832521471] [2025-02-06 18:50:30,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:30,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:30,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:30,343 INFO L229 MonitoredProcess]: Starting monitored process 10 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 18:50:30,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 18:50:30,397 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-06 18:50:30,421 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-02-06 18:50:30,422 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:50:30,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:30,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:30,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-06 18:50:30,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-06 18:50:30,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832521471] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:30,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:30,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-02-06 18:50:30,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167555973] [2025-02-06 18:50:30,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:30,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:50:30,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:30,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:50:30,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:50:30,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-02-06 18:50:30,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:30,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:30,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-02-06 18:50:30,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:32,013 INFO L124 PetriNetUnfolderBase]: 15571/23115 cut-off events. [2025-02-06 18:50:32,013 INFO L125 PetriNetUnfolderBase]: For 24376/24757 co-relation queries the response was YES. [2025-02-06 18:50:32,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59980 conditions, 23115 events. 15571/23115 cut-off events. For 24376/24757 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 133874 event pairs, 3259 based on Foata normal form. 435/21234 useless extension candidates. Maximal degree in co-relation 59880. Up to 12310 conditions per place. [2025-02-06 18:50:32,082 INFO L140 encePairwiseOnDemand]: 57/65 looper letters, 0 selfloop transitions, 0 changer transitions 132/132 dead transitions. [2025-02-06 18:50:32,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 132 transitions, 841 flow [2025-02-06 18:50:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:50:32,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:50:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2025-02-06 18:50:32,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4256410256410256 [2025-02-06 18:50:32,083 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 387 flow. Second operand 6 states and 166 transitions. [2025-02-06 18:50:32,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 132 transitions, 841 flow [2025-02-06 18:50:32,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 132 transitions, 796 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-02-06 18:50:32,138 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2025-02-06 18:50:32,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2025-02-06 18:50:32,138 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2025-02-06 18:50:32,139 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2025-02-06 18:50:32,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:32,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2025-02-06 18:50:32,141 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-02-06 18:50:32,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-02-06 18:50:32,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-02-06 18:50:32,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-02-06 18:50:32,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-02-06 18:50:32,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2025-02-06 18:50:32,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2025-02-06 18:50:32,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2025-02-06 18:50:32,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-02-06 18:50:32,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-02-06 18:50:32,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-02-06 18:50:32,142 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-02-06 18:50:32,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 18:50:32,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:32,343 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:32,347 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 18:50:32,347 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 18:50:32,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 06:50:32 BasicIcfg [2025-02-06 18:50:32,353 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 18:50:32,354 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 18:50:32,354 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 18:50:32,354 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 18:50:32,355 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:50:12" (3/4) ... [2025-02-06 18:50:32,356 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 18:50:32,359 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-06 18:50:32,359 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-06 18:50:32,359 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-02-06 18:50:32,362 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2025-02-06 18:50:32,362 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-02-06 18:50:32,362 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-06 18:50:32,362 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 18:50:32,436 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 18:50:32,436 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 18:50:32,436 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 18:50:32,438 INFO L158 Benchmark]: Toolchain (without parser) took 20404.44ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 113.7MB in the beginning and 445.4MB in the end (delta: -331.7MB). Peak memory consumption was 715.1MB. Max. memory is 16.1GB. [2025-02-06 18:50:32,438 INFO L158 Benchmark]: CDTParser took 0.96ms. Allocated memory is still 201.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:50:32,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.26ms. Allocated memory is still 142.6MB. Free memory was 113.7MB in the beginning and 101.3MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:50:32,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.06ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 99.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:50:32,439 INFO L158 Benchmark]: Boogie Preprocessor took 48.78ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 98.0MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:50:32,439 INFO L158 Benchmark]: IcfgBuilder took 604.84ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 60.9MB in the end (delta: 37.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-06 18:50:32,440 INFO L158 Benchmark]: TraceAbstraction took 19356.13ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 60.5MB in the beginning and 450.7MB in the end (delta: -390.3MB). Peak memory consumption was 908.0MB. Max. memory is 16.1GB. [2025-02-06 18:50:32,441 INFO L158 Benchmark]: Witness Printer took 82.57ms. Allocated memory is still 1.2GB. Free memory was 450.7MB in the beginning and 445.4MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:50:32,442 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96ms. Allocated memory is still 201.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.26ms. Allocated memory is still 142.6MB. Free memory was 113.7MB in the beginning and 101.3MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.06ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 99.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.78ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 98.0MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 604.84ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 60.9MB in the end (delta: 37.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19356.13ms. Allocated memory was 142.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 60.5MB in the beginning and 450.7MB in the end (delta: -390.3MB). Peak memory consumption was 908.0MB. Max. memory is 16.1GB. * Witness Printer took 82.57ms. Allocated memory is still 1.2GB. Free memory was 450.7MB in the beginning and 445.4MB 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: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: 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: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: 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 7 procedures, 96 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.2s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1374 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1324 mSDsluCounter, 620 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 580 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6028 IncrementalHoareTripleChecker+Invalid, 6069 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 40 mSDtfsCounter, 6028 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 678 GetRequests, 540 SyntacticMatches, 11 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=399occurred in iteration=11, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 712 NumberOfCodeBlocks, 688 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 973 ConstructedInterpolants, 0 QuantifiedInterpolants, 2205 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1311 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 396/569 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! [2025-02-06 18:50:32,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE