./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d 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/chl-name-comparator-symm.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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:08:16,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:08:16,674 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:08:16,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:08:16,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:08:16,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:08:16,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:08:16,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:08:16,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:08:16,692 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:08:16,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:08:16,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:08:16,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:08:16,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:08:16,693 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:08:16,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:08:16,693 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:08:16,693 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:08:16,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:08:16,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:08:16,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:08:16,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:08:16,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:08:16,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:08:16,694 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:08:16,694 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:08:16,694 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:08:16,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:08:16,694 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:08:16,694 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:08:16,695 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:08:16,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:08:16,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:08:16,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:08:16,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:08:16,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:08:16,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:08:16,695 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:08:16,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:08:16,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:08:16,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:08:16,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:08:16,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:08:16,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:08:16,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:08:16,696 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 -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2025-02-08 14:08:16,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:08:16,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:08:16,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:08:16,924 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:08:16,925 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:08:16,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2025-02-08 14:08:18,109 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d3e5789d8/955f647e28a44aaf8a1c7a3681a7434b/FLAGd09b6a425 [2025-02-08 14:08:18,366 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:08:18,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2025-02-08 14:08:18,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d3e5789d8/955f647e28a44aaf8a1c7a3681a7434b/FLAGd09b6a425 [2025-02-08 14:08:18,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d3e5789d8/955f647e28a44aaf8a1c7a3681a7434b [2025-02-08 14:08:18,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:08:18,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:08:18,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:08:18,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:08:18,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:08:18,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b219e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18, skipping insertion in model container [2025-02-08 14:08:18,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,423 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:08:18,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:08:18,562 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:08:18,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:08:18,595 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:08:18,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18 WrapperNode [2025-02-08 14:08:18,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:08:18,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:08:18,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:08:18,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:08:18,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,606 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,624 INFO L138 Inliner]: procedures = 24, calls = 25, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 252 [2025-02-08 14:08:18,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:08:18,628 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:08:18,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:08:18,628 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:08:18,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,639 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,648 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 14:08:18,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,653 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,654 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:08:18,657 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:08:18,657 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:08:18,657 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:08:18,658 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (1/1) ... [2025-02-08 14:08:18,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:08:18,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:18,682 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) [2025-02-08 14:08:18,684 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 [2025-02-08 14:08:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:08:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:08:18,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:08:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:08:18,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:08:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:08:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:08:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:08:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:08:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:08:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:08:18,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:08:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:08:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:08:18,702 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:08:18,773 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:08:18,775 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:08:18,896 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-3: #t~ite5#1 := #t~ret4#1; [2025-02-08 14:08:18,896 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret4#1 && #t~ret4#1 <= 2147483647; [2025-02-08 14:08:18,896 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:18,896 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-6: havoc minus_#t~short29#1, minus_#t~short30#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:18,896 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-7: #t~ret4#1 := minus_#res#1; [2025-02-08 14:08:18,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-3: #t~ite10#1 := #t~ret9#1; [2025-02-08 14:08:18,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret9#1 && #t~ret9#1 <= 2147483647; [2025-02-08 14:08:18,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:18,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-6: havoc minus_#t~short29#1, minus_#t~short30#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:18,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-7: #t~ret9#1 := minus_#res#1; [2025-02-08 14:08:19,071 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:08:19,072 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:08:19,339 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:08:19,340 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:08:19,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:08:19 BoogieIcfgContainer [2025-02-08 14:08:19,340 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:08:19,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:08:19,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:08:19,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:08:19,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:08:18" (1/3) ... [2025-02-08 14:08:19,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6934f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:08:19, skipping insertion in model container [2025-02-08 14:08:19,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:18" (2/3) ... [2025-02-08 14:08:19,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6934f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:08:19, skipping insertion in model container [2025-02-08 14:08:19,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:08:19" (3/3) ... [2025-02-08 14:08:19,348 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2025-02-08 14:08:19,359 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:08:19,360 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-symm.wvr.c that has 3 procedures, 71 locations, 1 initial locations, 3 loop locations, and 20 error locations. [2025-02-08 14:08:19,360 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:08:19,427 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:08:19,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 79 transitions, 172 flow [2025-02-08 14:08:19,486 INFO L124 PetriNetUnfolderBase]: 9/77 cut-off events. [2025-02-08 14:08:19,488 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:08:19,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 9/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 256 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2025-02-08 14:08:19,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 79 transitions, 172 flow [2025-02-08 14:08:19,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 76 transitions, 164 flow [2025-02-08 14:08:19,507 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:08:19,521 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;@3d1a1645, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:08:19,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2025-02-08 14:08:19,527 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:08:19,527 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2025-02-08 14:08:19,527 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:08:19,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:19,528 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:08:19,528 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:19,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:19,533 INFO L85 PathProgramCache]: Analyzing trace with hash 674239, now seen corresponding path program 1 times [2025-02-08 14:08:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:19,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523106167] [2025-02-08 14:08:19,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:19,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:19,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:08:19,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:08:19,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:19,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:08:19,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:19,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523106167] [2025-02-08 14:08:19,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523106167] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:19,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:19,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:08:19,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791990203] [2025-02-08 14:08:19,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:19,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:19,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:19,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:19,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:19,784 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 79 [2025-02-08 14:08:19,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:19,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:19,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 79 [2025-02-08 14:08:19,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:20,099 INFO L124 PetriNetUnfolderBase]: 545/1382 cut-off events. [2025-02-08 14:08:20,099 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2025-02-08 14:08:20,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 1382 events. 545/1382 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9395 event pairs, 390 based on Foata normal form. 3/1059 useless extension candidates. Maximal degree in co-relation 2189. Up to 861 conditions per place. [2025-02-08 14:08:20,114 INFO L140 encePairwiseOnDemand]: 69/79 looper letters, 36 selfloop transitions, 4 changer transitions 2/75 dead transitions. [2025-02-08 14:08:20,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 244 flow [2025-02-08 14:08:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2025-02-08 14:08:20,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6044303797468354 [2025-02-08 14:08:20,125 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 164 flow. Second operand 4 states and 191 transitions. [2025-02-08 14:08:20,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 244 flow [2025-02-08 14:08:20,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 75 transitions, 236 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:08:20,133 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 172 flow [2025-02-08 14:08:20,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2025-02-08 14:08:20,138 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, -1 predicate places. [2025-02-08 14:08:20,139 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 172 flow [2025-02-08 14:08:20,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:20,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:20,140 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:08:20,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:08:20,140 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:20,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1387972579, now seen corresponding path program 1 times [2025-02-08 14:08:20,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:20,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335569614] [2025-02-08 14:08:20,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:20,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:20,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:08:20,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:08:20,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:20,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:20,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:08:20,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:20,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335569614] [2025-02-08 14:08:20,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335569614] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:20,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422893581] [2025-02-08 14:08:20,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:20,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:20,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:20,244 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) [2025-02-08 14:08:20,247 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 [2025-02-08 14:08:20,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:08:20,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:08:20,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:20,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:20,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:08:20,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:08:20,350 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422893581] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:20,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:08:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594614921] [2025-02-08 14:08:20,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:20,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:08:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:20,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:08:20,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:20,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 79 [2025-02-08 14:08:20,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 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) [2025-02-08 14:08:20,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:20,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 79 [2025-02-08 14:08:20,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:20,576 INFO L124 PetriNetUnfolderBase]: 545/1379 cut-off events. [2025-02-08 14:08:20,576 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-02-08 14:08:20,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2267 conditions, 1379 events. 545/1379 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9355 event pairs, 390 based on Foata normal form. 1/1055 useless extension candidates. Maximal degree in co-relation 2240. Up to 855 conditions per place. [2025-02-08 14:08:20,584 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 32 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2025-02-08 14:08:20,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 246 flow [2025-02-08 14:08:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:08:20,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:08:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2025-02-08 14:08:20,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.540084388185654 [2025-02-08 14:08:20,587 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 172 flow. Second operand 6 states and 256 transitions. [2025-02-08 14:08:20,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 246 flow [2025-02-08 14:08:20,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:08:20,588 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 179 flow [2025-02-08 14:08:20,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2025-02-08 14:08:20,591 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2025-02-08 14:08:20,591 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 179 flow [2025-02-08 14:08:20,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 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) [2025-02-08 14:08:20,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:20,592 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:08:20,599 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 [2025-02-08 14:08:20,792 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 [2025-02-08 14:08:20,793 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:20,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:20,793 INFO L85 PathProgramCache]: Analyzing trace with hash -77476376, now seen corresponding path program 1 times [2025-02-08 14:08:20,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:20,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708496156] [2025-02-08 14:08:20,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:20,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:20,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:08:20,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:08:20,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:20,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:08:20,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:20,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708496156] [2025-02-08 14:08:20,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708496156] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:20,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883203693] [2025-02-08 14:08:20,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:20,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:20,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:20,882 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) [2025-02-08 14:08:20,884 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 [2025-02-08 14:08:20,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:08:20,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:08:20,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:20,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:20,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:08:20,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:08:20,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:08:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:08:21,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883203693] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:08:21,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:08:21,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:08:21,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848458125] [2025-02-08 14:08:21,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:08:21,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:08:21,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:21,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:08:21,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:08:21,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 79 [2025-02-08 14:08:21,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 179 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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) [2025-02-08 14:08:21,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:21,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 79 [2025-02-08 14:08:21,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:21,252 INFO L124 PetriNetUnfolderBase]: 548/1391 cut-off events. [2025-02-08 14:08:21,253 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2025-02-08 14:08:21,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1391 events. 548/1391 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9463 event pairs, 390 based on Foata normal form. 3/1067 useless extension candidates. Maximal degree in co-relation 2241. Up to 862 conditions per place. [2025-02-08 14:08:21,259 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 35 selfloop transitions, 13 changer transitions 0/81 dead transitions. [2025-02-08 14:08:21,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 329 flow [2025-02-08 14:08:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:08:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:08:21,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 411 transitions. [2025-02-08 14:08:21,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.520253164556962 [2025-02-08 14:08:21,262 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 179 flow. Second operand 10 states and 411 transitions. [2025-02-08 14:08:21,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 329 flow [2025-02-08 14:08:21,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 283 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-02-08 14:08:21,264 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 231 flow [2025-02-08 14:08:21,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=231, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2025-02-08 14:08:21,265 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2025-02-08 14:08:21,265 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 231 flow [2025-02-08 14:08:21,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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) [2025-02-08 14:08:21,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:21,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:21,271 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 [2025-02-08 14:08:21,470 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 [2025-02-08 14:08:21,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:21,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:21,472 INFO L85 PathProgramCache]: Analyzing trace with hash -22252385, now seen corresponding path program 1 times [2025-02-08 14:08:21,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:21,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115775185] [2025-02-08 14:08:21,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:21,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:21,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:08:21,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:08:21,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:21,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:08:21,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:21,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115775185] [2025-02-08 14:08:21,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115775185] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:21,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:21,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:21,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48336091] [2025-02-08 14:08:21,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:21,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:21,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:21,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:21,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:21,566 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 79 [2025-02-08 14:08:21,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:21,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:21,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 79 [2025-02-08 14:08:21,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:21,862 INFO L124 PetriNetUnfolderBase]: 1164/2758 cut-off events. [2025-02-08 14:08:21,863 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2025-02-08 14:08:21,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4662 conditions, 2758 events. 1164/2758 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 20940 event pairs, 526 based on Foata normal form. 28/2212 useless extension candidates. Maximal degree in co-relation 4628. Up to 1042 conditions per place. [2025-02-08 14:08:21,876 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 91 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2025-02-08 14:08:21,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 512 flow [2025-02-08 14:08:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2025-02-08 14:08:21,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7215189873417721 [2025-02-08 14:08:21,878 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 231 flow. Second operand 4 states and 228 transitions. [2025-02-08 14:08:21,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 512 flow [2025-02-08 14:08:21,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 126 transitions, 501 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:21,881 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 242 flow [2025-02-08 14:08:21,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2025-02-08 14:08:21,881 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 10 predicate places. [2025-02-08 14:08:21,881 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 242 flow [2025-02-08 14:08:21,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:21,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:21,882 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:21,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:08:21,882 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:21,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash -310647762, now seen corresponding path program 1 times [2025-02-08 14:08:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:21,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590027500] [2025-02-08 14:08:21,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:21,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:21,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:08:21,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:08:21,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:21,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:08:21,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:21,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590027500] [2025-02-08 14:08:21,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590027500] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:21,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:21,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:08:21,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496083782] [2025-02-08 14:08:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:21,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:21,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:21,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:21,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:21,934 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 79 [2025-02-08 14:08:21,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:21,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:21,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 79 [2025-02-08 14:08:21,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:22,372 INFO L124 PetriNetUnfolderBase]: 2195/5067 cut-off events. [2025-02-08 14:08:22,372 INFO L125 PetriNetUnfolderBase]: For 487/563 co-relation queries the response was YES. [2025-02-08 14:08:22,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8903 conditions, 5067 events. 2195/5067 cut-off events. For 487/563 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 42489 event pairs, 1004 based on Foata normal form. 52/4161 useless extension candidates. Maximal degree in co-relation 8867. Up to 1963 conditions per place. [2025-02-08 14:08:22,445 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 94 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2025-02-08 14:08:22,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 129 transitions, 558 flow [2025-02-08 14:08:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2025-02-08 14:08:22,447 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7120253164556962 [2025-02-08 14:08:22,447 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 242 flow. Second operand 4 states and 225 transitions. [2025-02-08 14:08:22,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 129 transitions, 558 flow [2025-02-08 14:08:22,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 129 transitions, 552 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:08:22,450 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 262 flow [2025-02-08 14:08:22,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2025-02-08 14:08:22,450 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2025-02-08 14:08:22,450 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 262 flow [2025-02-08 14:08:22,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:22,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:22,451 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:22,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:08:22,451 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:22,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1496270771, now seen corresponding path program 1 times [2025-02-08 14:08:22,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:22,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091407602] [2025-02-08 14:08:22,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:22,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:22,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:08:22,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:08:22,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:22,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:08:22,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:22,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091407602] [2025-02-08 14:08:22,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091407602] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:22,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:22,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:08:22,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516175924] [2025-02-08 14:08:22,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:22,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:22,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:22,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:22,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:22,490 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2025-02-08 14:08:22,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:22,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:22,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2025-02-08 14:08:22,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:22,780 INFO L124 PetriNetUnfolderBase]: 1551/3558 cut-off events. [2025-02-08 14:08:22,780 INFO L125 PetriNetUnfolderBase]: For 551/607 co-relation queries the response was YES. [2025-02-08 14:08:22,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6704 conditions, 3558 events. 1551/3558 cut-off events. For 551/607 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 27559 event pairs, 665 based on Foata normal form. 0/3035 useless extension candidates. Maximal degree in co-relation 6666. Up to 1402 conditions per place. [2025-02-08 14:08:22,797 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 102 selfloop transitions, 4 changer transitions 4/144 dead transitions. [2025-02-08 14:08:22,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 144 transitions, 646 flow [2025-02-08 14:08:22,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:08:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:08:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 281 transitions. [2025-02-08 14:08:22,798 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7113924050632912 [2025-02-08 14:08:22,799 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 262 flow. Second operand 5 states and 281 transitions. [2025-02-08 14:08:22,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 144 transitions, 646 flow [2025-02-08 14:08:22,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 144 transitions, 638 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:08:22,803 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 285 flow [2025-02-08 14:08:22,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=285, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2025-02-08 14:08:22,803 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2025-02-08 14:08:22,804 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 285 flow [2025-02-08 14:08:22,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:22,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:22,804 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:22,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:08:22,804 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:22,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:22,804 INFO L85 PathProgramCache]: Analyzing trace with hash 893693335, now seen corresponding path program 1 times [2025-02-08 14:08:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:22,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594161043] [2025-02-08 14:08:22,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:22,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:22,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:08:22,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:08:22,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:22,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:08:22,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:22,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594161043] [2025-02-08 14:08:22,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594161043] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:22,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:22,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:08:22,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188205991] [2025-02-08 14:08:22,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:22,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:08:22,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:22,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:08:22,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:08:22,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2025-02-08 14:08:22,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:22,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:22,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2025-02-08 14:08:22,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:23,100 INFO L124 PetriNetUnfolderBase]: 1474/3760 cut-off events. [2025-02-08 14:08:23,101 INFO L125 PetriNetUnfolderBase]: For 1201/1235 co-relation queries the response was YES. [2025-02-08 14:08:23,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 3760 events. 1474/3760 cut-off events. For 1201/1235 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 30954 event pairs, 1138 based on Foata normal form. 1/3162 useless extension candidates. Maximal degree in co-relation 7229. Up to 2334 conditions per place. [2025-02-08 14:08:23,125 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 50 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2025-02-08 14:08:23,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 86 transitions, 386 flow [2025-02-08 14:08:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:08:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:08:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2025-02-08 14:08:23,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6413502109704642 [2025-02-08 14:08:23,127 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 285 flow. Second operand 3 states and 152 transitions. [2025-02-08 14:08:23,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 86 transitions, 386 flow [2025-02-08 14:08:23,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 86 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:08:23,131 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 286 flow [2025-02-08 14:08:23,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2025-02-08 14:08:23,132 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2025-02-08 14:08:23,132 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 286 flow [2025-02-08 14:08:23,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:23,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:23,132 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:23,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:08:23,132 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:23,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:23,133 INFO L85 PathProgramCache]: Analyzing trace with hash 416439797, now seen corresponding path program 1 times [2025-02-08 14:08:23,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:23,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182827064] [2025-02-08 14:08:23,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:23,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:23,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:08:23,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:08:23,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:23,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:08:23,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182827064] [2025-02-08 14:08:23,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182827064] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19846615] [2025-02-08 14:08:23,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:23,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:23,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:23,227 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) [2025-02-08 14:08:23,232 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 [2025-02-08 14:08:23,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:08:23,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:08:23,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:23,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:23,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:08:23,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:08:23,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:08:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:08:23,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19846615] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:08:23,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:08:23,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-08 14:08:23,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489974856] [2025-02-08 14:08:23,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:08:23,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:08:23,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:23,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:08:23,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:08:23,404 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 79 [2025-02-08 14:08:23,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 286 flow. Second operand has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:23,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:23,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 79 [2025-02-08 14:08:23,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:23,711 INFO L124 PetriNetUnfolderBase]: 1472/3758 cut-off events. [2025-02-08 14:08:23,711 INFO L125 PetriNetUnfolderBase]: For 1207/1241 co-relation queries the response was YES. [2025-02-08 14:08:23,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7260 conditions, 3758 events. 1472/3758 cut-off events. For 1207/1241 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 30861 event pairs, 1138 based on Foata normal form. 2/3161 useless extension candidates. Maximal degree in co-relation 7233. Up to 2326 conditions per place. [2025-02-08 14:08:23,727 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 41 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2025-02-08 14:08:23,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 84 transitions, 380 flow [2025-02-08 14:08:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:08:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:08:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 295 transitions. [2025-02-08 14:08:23,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5334538878842676 [2025-02-08 14:08:23,729 INFO L175 Difference]: Start difference. First operand has 96 places, 86 transitions, 286 flow. Second operand 7 states and 295 transitions. [2025-02-08 14:08:23,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 84 transitions, 380 flow [2025-02-08 14:08:23,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 84 transitions, 376 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:23,732 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 294 flow [2025-02-08 14:08:23,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=294, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2025-02-08 14:08:23,733 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2025-02-08 14:08:23,733 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 294 flow [2025-02-08 14:08:23,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:23,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:23,733 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:08:23,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:23,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:23,934 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:23,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash 728840710, now seen corresponding path program 2 times [2025-02-08 14:08:23,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:23,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827755133] [2025-02-08 14:08:23,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:08:23,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:23,943 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:08:23,946 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:08:23,946 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:08:23,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:08:23,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:23,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827755133] [2025-02-08 14:08:23,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827755133] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:23,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834088463] [2025-02-08 14:08:23,965 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:08:23,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:23,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:23,967 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) [2025-02-08 14:08:23,968 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 [2025-02-08 14:08:24,005 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:08:24,021 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:08:24,021 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:08:24,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:24,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:08:24,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:08:24,044 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:08:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:08:24,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834088463] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:08:24,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:08:24,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2025-02-08 14:08:24,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105679521] [2025-02-08 14:08:24,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:08:24,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:08:24,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:24,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:08:24,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:08:24,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 79 [2025-02-08 14:08:24,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:24,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:24,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 79 [2025-02-08 14:08:24,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:24,363 INFO L124 PetriNetUnfolderBase]: 1472/3757 cut-off events. [2025-02-08 14:08:24,364 INFO L125 PetriNetUnfolderBase]: For 1220/1254 co-relation queries the response was YES. [2025-02-08 14:08:24,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 3757 events. 1472/3757 cut-off events. For 1220/1254 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 30857 event pairs, 1138 based on Foata normal form. 1/3160 useless extension candidates. Maximal degree in co-relation 7229. Up to 2323 conditions per place. [2025-02-08 14:08:24,379 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 37 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2025-02-08 14:08:24,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 83 transitions, 384 flow [2025-02-08 14:08:24,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:24,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2025-02-08 14:08:24,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.569620253164557 [2025-02-08 14:08:24,380 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 294 flow. Second operand 4 states and 180 transitions. [2025-02-08 14:08:24,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 83 transitions, 384 flow [2025-02-08 14:08:24,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 83 transitions, 366 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-02-08 14:08:24,383 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 292 flow [2025-02-08 14:08:24,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=94, PETRI_TRANSITIONS=83} [2025-02-08 14:08:24,384 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2025-02-08 14:08:24,384 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 292 flow [2025-02-08 14:08:24,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:24,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:24,384 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:24,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:24,588 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,SelfDestructingSolverStorable8 [2025-02-08 14:08:24,588 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:24,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:24,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1184572747, now seen corresponding path program 2 times [2025-02-08 14:08:24,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:24,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342519679] [2025-02-08 14:08:24,589 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:08:24,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:24,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 14:08:24,608 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:08:24,608 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:08:24,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:24,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:24,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342519679] [2025-02-08 14:08:24,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342519679] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:24,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467837484] [2025-02-08 14:08:24,666 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:08:24,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:24,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:24,669 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) [2025-02-08 14:08:24,670 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 [2025-02-08 14:08:24,710 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-08 14:08:24,725 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:08:24,726 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:08:24,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:24,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:08:24,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:24,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:24,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467837484] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:24,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:24,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-08 14:08:24,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499301025] [2025-02-08 14:08:24,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:24,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:08:24,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:24,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:08:24,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:08:24,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2025-02-08 14:08:24,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:24,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:24,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2025-02-08 14:08:24,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:25,005 INFO L124 PetriNetUnfolderBase]: 1751/4021 cut-off events. [2025-02-08 14:08:25,006 INFO L125 PetriNetUnfolderBase]: For 1122/1138 co-relation queries the response was YES. [2025-02-08 14:08:25,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8049 conditions, 4021 events. 1751/4021 cut-off events. For 1122/1138 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 31412 event pairs, 1036 based on Foata normal form. 52/3437 useless extension candidates. Maximal degree in co-relation 7975. Up to 2115 conditions per place. [2025-02-08 14:08:25,021 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 65 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2025-02-08 14:08:25,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 100 transitions, 477 flow [2025-02-08 14:08:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2025-02-08 14:08:25,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6139240506329114 [2025-02-08 14:08:25,022 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 292 flow. Second operand 4 states and 194 transitions. [2025-02-08 14:08:25,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 100 transitions, 477 flow [2025-02-08 14:08:25,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 100 transitions, 451 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:08:25,027 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 272 flow [2025-02-08 14:08:25,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2025-02-08 14:08:25,028 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2025-02-08 14:08:25,028 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 272 flow [2025-02-08 14:08:25,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:25,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:25,029 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:25,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:25,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-08 14:08:25,230 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:25,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1932951156, now seen corresponding path program 1 times [2025-02-08 14:08:25,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:25,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201533910] [2025-02-08 14:08:25,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:25,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:25,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:08:25,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:08:25,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:25,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:25,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201533910] [2025-02-08 14:08:25,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201533910] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:25,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:25,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:08:25,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973271228] [2025-02-08 14:08:25,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:25,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:08:25,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:25,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:08:25,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:08:25,277 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 79 [2025-02-08 14:08:25,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:25,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:25,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 79 [2025-02-08 14:08:25,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:25,509 INFO L124 PetriNetUnfolderBase]: 1496/3698 cut-off events. [2025-02-08 14:08:25,509 INFO L125 PetriNetUnfolderBase]: For 1842/1850 co-relation queries the response was YES. [2025-02-08 14:08:25,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 3698 events. 1496/3698 cut-off events. For 1842/1850 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 29539 event pairs, 1012 based on Foata normal form. 52/3194 useless extension candidates. Maximal degree in co-relation 7341. Up to 2116 conditions per place. [2025-02-08 14:08:25,520 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 64 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2025-02-08 14:08:25,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 99 transitions, 453 flow [2025-02-08 14:08:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:08:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:08:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2025-02-08 14:08:25,521 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6751054852320675 [2025-02-08 14:08:25,522 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 272 flow. Second operand 3 states and 160 transitions. [2025-02-08 14:08:25,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 99 transitions, 453 flow [2025-02-08 14:08:25,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 443 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:08:25,525 INFO L231 Difference]: Finished difference. Result has 91 places, 81 transitions, 266 flow [2025-02-08 14:08:25,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=91, PETRI_TRANSITIONS=81} [2025-02-08 14:08:25,526 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2025-02-08 14:08:25,526 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 81 transitions, 266 flow [2025-02-08 14:08:25,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:25,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:25,526 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:25,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 14:08:25,526 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:25,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:25,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1144903006, now seen corresponding path program 1 times [2025-02-08 14:08:25,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:25,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96244713] [2025-02-08 14:08:25,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:25,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:25,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:08:25,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:08:25,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:25,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:25,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:25,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96244713] [2025-02-08 14:08:25,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96244713] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:25,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:25,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:08:25,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159678353] [2025-02-08 14:08:25,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:25,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:25,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:25,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:25,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:25,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2025-02-08 14:08:25,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 81 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:25,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:25,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2025-02-08 14:08:25,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:25,775 INFO L124 PetriNetUnfolderBase]: 1170/2669 cut-off events. [2025-02-08 14:08:25,776 INFO L125 PetriNetUnfolderBase]: For 1434/1442 co-relation queries the response was YES. [2025-02-08 14:08:25,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5664 conditions, 2669 events. 1170/2669 cut-off events. For 1434/1442 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 18520 event pairs, 553 based on Foata normal form. 0/2360 useless extension candidates. Maximal degree in co-relation 5602. Up to 1167 conditions per place. [2025-02-08 14:08:25,785 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 97 selfloop transitions, 4 changer transitions 10/142 dead transitions. [2025-02-08 14:08:25,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 142 transitions, 736 flow [2025-02-08 14:08:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:08:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:08:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 277 transitions. [2025-02-08 14:08:25,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7012658227848101 [2025-02-08 14:08:25,787 INFO L175 Difference]: Start difference. First operand has 91 places, 81 transitions, 266 flow. Second operand 5 states and 277 transitions. [2025-02-08 14:08:25,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 142 transitions, 736 flow [2025-02-08 14:08:25,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 142 transitions, 704 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:25,790 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 283 flow [2025-02-08 14:08:25,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2025-02-08 14:08:25,791 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2025-02-08 14:08:25,791 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 283 flow [2025-02-08 14:08:25,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:25,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:25,791 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:25,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 14:08:25,791 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:25,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1165701828, now seen corresponding path program 1 times [2025-02-08 14:08:25,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:25,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53613738] [2025-02-08 14:08:25,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:25,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:25,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 14:08:25,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 14:08:25,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:25,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:25,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:25,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53613738] [2025-02-08 14:08:25,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53613738] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:25,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201277735] [2025-02-08 14:08:25,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:25,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:25,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:25,854 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) [2025-02-08 14:08:25,858 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 [2025-02-08 14:08:25,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 14:08:25,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 14:08:25,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:25,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:25,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:08:25,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:25,940 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:25,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201277735] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:25,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:25,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:08:25,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092224474] [2025-02-08 14:08:25,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:25,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:08:25,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:25,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:08:25,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:25,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 79 [2025-02-08 14:08:25,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:25,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:25,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 79 [2025-02-08 14:08:25,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:26,249 INFO L124 PetriNetUnfolderBase]: 1249/2674 cut-off events. [2025-02-08 14:08:26,249 INFO L125 PetriNetUnfolderBase]: For 1504/1504 co-relation queries the response was YES. [2025-02-08 14:08:26,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 2674 events. 1249/2674 cut-off events. For 1504/1504 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 17748 event pairs, 64 based on Foata normal form. 40/2449 useless extension candidates. Maximal degree in co-relation 6028. Up to 1047 conditions per place. [2025-02-08 14:08:26,259 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 126 selfloop transitions, 5 changer transitions 0/160 dead transitions. [2025-02-08 14:08:26,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 160 transitions, 833 flow [2025-02-08 14:08:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:08:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:08:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 319 transitions. [2025-02-08 14:08:26,261 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6729957805907173 [2025-02-08 14:08:26,261 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 283 flow. Second operand 6 states and 319 transitions. [2025-02-08 14:08:26,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 160 transitions, 833 flow [2025-02-08 14:08:26,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 160 transitions, 833 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:08:26,264 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 289 flow [2025-02-08 14:08:26,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2025-02-08 14:08:26,265 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2025-02-08 14:08:26,265 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 289 flow [2025-02-08 14:08:26,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:26,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:26,265 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:26,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 14:08:26,470 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,SelfDestructingSolverStorable12 [2025-02-08 14:08:26,470 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:26,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:26,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2139132535, now seen corresponding path program 1 times [2025-02-08 14:08:26,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:26,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635441595] [2025-02-08 14:08:26,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:26,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 14:08:26,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 14:08:26,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:26,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:26,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635441595] [2025-02-08 14:08:26,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635441595] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:26,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553046701] [2025-02-08 14:08:26,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:26,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:26,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:26,557 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) [2025-02-08 14:08:26,558 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 [2025-02-08 14:08:26,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 14:08:26,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 14:08:26,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:26,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:26,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:08:26,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:26,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:26,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553046701] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:26,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:26,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:08:26,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882741534] [2025-02-08 14:08:26,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:26,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:26,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:26,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:26,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:26,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2025-02-08 14:08:26,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:26,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:26,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2025-02-08 14:08:26,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:26,976 INFO L124 PetriNetUnfolderBase]: 1609/3658 cut-off events. [2025-02-08 14:08:26,976 INFO L125 PetriNetUnfolderBase]: For 2634/2650 co-relation queries the response was YES. [2025-02-08 14:08:26,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8123 conditions, 3658 events. 1609/3658 cut-off events. For 2634/2650 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 26669 event pairs, 885 based on Foata normal form. 80/3326 useless extension candidates. Maximal degree in co-relation 8058. Up to 1745 conditions per place. [2025-02-08 14:08:26,987 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 115 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2025-02-08 14:08:26,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 145 transitions, 787 flow [2025-02-08 14:08:26,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:08:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:08:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 259 transitions. [2025-02-08 14:08:26,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6556962025316456 [2025-02-08 14:08:26,989 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 289 flow. Second operand 5 states and 259 transitions. [2025-02-08 14:08:26,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 145 transitions, 787 flow [2025-02-08 14:08:26,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 145 transitions, 751 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-08 14:08:26,992 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 308 flow [2025-02-08 14:08:26,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2025-02-08 14:08:26,993 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2025-02-08 14:08:26,993 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 308 flow [2025-02-08 14:08:26,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:26,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:26,993 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:27,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 14:08:27,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:27,194 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:27,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:27,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1777018979, now seen corresponding path program 1 times [2025-02-08 14:08:27,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:27,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299347334] [2025-02-08 14:08:27,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:27,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:27,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 14:08:27,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 14:08:27,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:27,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:27,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:27,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299347334] [2025-02-08 14:08:27,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299347334] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:27,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:27,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:08:27,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806184259] [2025-02-08 14:08:27,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:27,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:08:27,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:27,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:08:27,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:08:27,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 79 [2025-02-08 14:08:27,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:27,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:27,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 79 [2025-02-08 14:08:27,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:27,434 INFO L124 PetriNetUnfolderBase]: 1334/3241 cut-off events. [2025-02-08 14:08:27,435 INFO L125 PetriNetUnfolderBase]: For 2133/2151 co-relation queries the response was YES. [2025-02-08 14:08:27,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7250 conditions, 3241 events. 1334/3241 cut-off events. For 2133/2151 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 24085 event pairs, 972 based on Foata normal form. 58/2973 useless extension candidates. Maximal degree in co-relation 7184. Up to 1916 conditions per place. [2025-02-08 14:08:27,446 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 69 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2025-02-08 14:08:27,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 102 transitions, 539 flow [2025-02-08 14:08:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:08:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:08:27,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2025-02-08 14:08:27,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6708860759493671 [2025-02-08 14:08:27,450 INFO L175 Difference]: Start difference. First operand has 102 places, 83 transitions, 308 flow. Second operand 3 states and 159 transitions. [2025-02-08 14:08:27,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 102 transitions, 539 flow [2025-02-08 14:08:27,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 102 transitions, 532 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:27,454 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 306 flow [2025-02-08 14:08:27,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2025-02-08 14:08:27,455 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2025-02-08 14:08:27,455 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 306 flow [2025-02-08 14:08:27,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:27,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:27,456 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:27,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 14:08:27,456 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:27,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:27,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1888599801, now seen corresponding path program 1 times [2025-02-08 14:08:27,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:27,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824645096] [2025-02-08 14:08:27,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:27,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:27,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 14:08:27,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 14:08:27,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:27,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:27,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:27,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824645096] [2025-02-08 14:08:27,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824645096] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:27,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150375126] [2025-02-08 14:08:27,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:27,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:27,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:27,562 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) [2025-02-08 14:08:27,588 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 [2025-02-08 14:08:27,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 14:08:27,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 14:08:27,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:27,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:27,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:08:27,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:27,713 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:27,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150375126] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:27,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:27,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2025-02-08 14:08:27,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548828297] [2025-02-08 14:08:27,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:27,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:27,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:27,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:27,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:27,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2025-02-08 14:08:27,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:27,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:27,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2025-02-08 14:08:27,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:28,047 INFO L124 PetriNetUnfolderBase]: 1427/3320 cut-off events. [2025-02-08 14:08:28,047 INFO L125 PetriNetUnfolderBase]: For 2370/2374 co-relation queries the response was YES. [2025-02-08 14:08:28,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7637 conditions, 3320 events. 1427/3320 cut-off events. For 2370/2374 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 24083 event pairs, 692 based on Foata normal form. 44/3078 useless extension candidates. Maximal degree in co-relation 7571. Up to 1295 conditions per place. [2025-02-08 14:08:28,061 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 72 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2025-02-08 14:08:28,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 531 flow [2025-02-08 14:08:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2025-02-08 14:08:28,063 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6107594936708861 [2025-02-08 14:08:28,063 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 306 flow. Second operand 4 states and 193 transitions. [2025-02-08 14:08:28,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 531 flow [2025-02-08 14:08:28,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 515 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:28,068 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 300 flow [2025-02-08 14:08:28,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2025-02-08 14:08:28,069 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2025-02-08 14:08:28,069 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 300 flow [2025-02-08 14:08:28,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:28,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:28,069 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:28,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 14:08:28,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 14:08:28,270 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:28,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:28,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1582978405, now seen corresponding path program 1 times [2025-02-08 14:08:28,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:28,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945779319] [2025-02-08 14:08:28,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:28,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 14:08:28,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 14:08:28,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:28,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:28,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:28,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945779319] [2025-02-08 14:08:28,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945779319] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:28,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112537629] [2025-02-08 14:08:28,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:28,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:28,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:28,377 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) [2025-02-08 14:08:28,379 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 [2025-02-08 14:08:28,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 14:08:28,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 14:08:28,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:28,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:28,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:08:28,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:28,494 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:28,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112537629] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:28,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:28,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2025-02-08 14:08:28,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230893641] [2025-02-08 14:08:28,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:28,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:28,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:28,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:28,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:28,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 79 [2025-02-08 14:08:28,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:28,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:28,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 79 [2025-02-08 14:08:28,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:28,771 INFO L124 PetriNetUnfolderBase]: 1431/3288 cut-off events. [2025-02-08 14:08:28,771 INFO L125 PetriNetUnfolderBase]: For 2194/2198 co-relation queries the response was YES. [2025-02-08 14:08:28,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7470 conditions, 3288 events. 1431/3288 cut-off events. For 2194/2198 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 23509 event pairs, 692 based on Foata normal form. 44/3046 useless extension candidates. Maximal degree in co-relation 7403. Up to 1295 conditions per place. [2025-02-08 14:08:28,780 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 73 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2025-02-08 14:08:28,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 100 transitions, 517 flow [2025-02-08 14:08:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:28,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2025-02-08 14:08:28,782 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5981012658227848 [2025-02-08 14:08:28,782 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 300 flow. Second operand 4 states and 189 transitions. [2025-02-08 14:08:28,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 100 transitions, 517 flow [2025-02-08 14:08:28,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 100 transitions, 514 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:28,786 INFO L231 Difference]: Finished difference. Result has 101 places, 80 transitions, 297 flow [2025-02-08 14:08:28,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=101, PETRI_TRANSITIONS=80} [2025-02-08 14:08:28,786 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2025-02-08 14:08:28,786 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 80 transitions, 297 flow [2025-02-08 14:08:28,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:28,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:28,787 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:28,793 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 [2025-02-08 14:08:28,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:28,988 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:28,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:28,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1682800538, now seen corresponding path program 1 times [2025-02-08 14:08:28,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:28,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711254353] [2025-02-08 14:08:28,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:28,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:28,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 14:08:29,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 14:08:29,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:29,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:29,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:29,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711254353] [2025-02-08 14:08:29,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711254353] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:29,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210809771] [2025-02-08 14:08:29,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:29,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:29,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:29,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:29,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 14:08:29,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 14:08:29,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 14:08:29,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:29,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:29,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:08:29,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:29,180 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:29,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210809771] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:29,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:29,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:08:29,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552418022] [2025-02-08 14:08:29,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:29,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:29,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:29,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:29,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:29,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2025-02-08 14:08:29,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 80 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:29,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:29,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2025-02-08 14:08:29,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:29,572 INFO L124 PetriNetUnfolderBase]: 1886/4219 cut-off events. [2025-02-08 14:08:29,572 INFO L125 PetriNetUnfolderBase]: For 2594/2622 co-relation queries the response was YES. [2025-02-08 14:08:29,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9499 conditions, 4219 events. 1886/4219 cut-off events. For 2594/2622 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 31201 event pairs, 1092 based on Foata normal form. 120/3929 useless extension candidates. Maximal degree in co-relation 9432. Up to 2080 conditions per place. [2025-02-08 14:08:29,588 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 116 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2025-02-08 14:08:29,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 143 transitions, 818 flow [2025-02-08 14:08:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:08:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:08:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 256 transitions. [2025-02-08 14:08:29,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6481012658227848 [2025-02-08 14:08:29,592 INFO L175 Difference]: Start difference. First operand has 101 places, 80 transitions, 297 flow. Second operand 5 states and 256 transitions. [2025-02-08 14:08:29,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 143 transitions, 818 flow [2025-02-08 14:08:29,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 143 transitions, 812 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:29,597 INFO L231 Difference]: Finished difference. Result has 105 places, 81 transitions, 322 flow [2025-02-08 14:08:29,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=105, PETRI_TRANSITIONS=81} [2025-02-08 14:08:29,598 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2025-02-08 14:08:29,598 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 81 transitions, 322 flow [2025-02-08 14:08:29,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:29,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:29,598 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:29,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:29,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 14:08:29,799 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:29,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:29,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1827689636, now seen corresponding path program 1 times [2025-02-08 14:08:29,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:29,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741924026] [2025-02-08 14:08:29,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:29,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:29,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 14:08:29,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 14:08:29,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:29,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:29,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:29,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741924026] [2025-02-08 14:08:29,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741924026] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:29,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033821351] [2025-02-08 14:08:29,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:29,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:29,883 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:29,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 14:08:29,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 14:08:29,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 14:08:29,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:29,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:29,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:08:29,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:29,996 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:29,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033821351] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:29,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:29,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:08:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881815320] [2025-02-08 14:08:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:29,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:29,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:29,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:30,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2025-02-08 14:08:30,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 81 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:30,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:30,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2025-02-08 14:08:30,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:30,282 INFO L124 PetriNetUnfolderBase]: 1689/4038 cut-off events. [2025-02-08 14:08:30,282 INFO L125 PetriNetUnfolderBase]: For 2850/2878 co-relation queries the response was YES. [2025-02-08 14:08:30,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9378 conditions, 4038 events. 1689/4038 cut-off events. For 2850/2878 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 30831 event pairs, 1141 based on Foata normal form. 62/3784 useless extension candidates. Maximal degree in co-relation 9310. Up to 2119 conditions per place. [2025-02-08 14:08:30,297 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 117 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2025-02-08 14:08:30,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 145 transitions, 826 flow [2025-02-08 14:08:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:08:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:08:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 254 transitions. [2025-02-08 14:08:30,298 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6430379746835443 [2025-02-08 14:08:30,298 INFO L175 Difference]: Start difference. First operand has 105 places, 81 transitions, 322 flow. Second operand 5 states and 254 transitions. [2025-02-08 14:08:30,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 145 transitions, 826 flow [2025-02-08 14:08:30,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 145 transitions, 819 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:30,305 INFO L231 Difference]: Finished difference. Result has 107 places, 80 transitions, 320 flow [2025-02-08 14:08:30,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=107, PETRI_TRANSITIONS=80} [2025-02-08 14:08:30,305 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 33 predicate places. [2025-02-08 14:08:30,305 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 80 transitions, 320 flow [2025-02-08 14:08:30,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:30,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:30,305 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:30,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:30,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:30,506 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:30,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:30,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1827690629, now seen corresponding path program 1 times [2025-02-08 14:08:30,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:30,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368399476] [2025-02-08 14:08:30,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:30,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:30,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 14:08:30,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 14:08:30,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:30,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:30,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:30,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368399476] [2025-02-08 14:08:30,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368399476] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:30,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118038532] [2025-02-08 14:08:30,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:30,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:30,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:30,613 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:30,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 14:08:30,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 14:08:30,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 14:08:30,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:30,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:30,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:08:30,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:30,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118038532] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:30,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:30,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2025-02-08 14:08:30,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735823726] [2025-02-08 14:08:30,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:30,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:08:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:30,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:08:30,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:08:30,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2025-02-08 14:08:30,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 80 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:30,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:30,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2025-02-08 14:08:30,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:31,145 INFO L124 PetriNetUnfolderBase]: 1759/4070 cut-off events. [2025-02-08 14:08:31,146 INFO L125 PetriNetUnfolderBase]: For 2780/2812 co-relation queries the response was YES. [2025-02-08 14:08:31,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9679 conditions, 4070 events. 1759/4070 cut-off events. For 2780/2812 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30436 event pairs, 1207 based on Foata normal form. 64/3900 useless extension candidates. Maximal degree in co-relation 9611. Up to 2234 conditions per place. [2025-02-08 14:08:31,159 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 117 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2025-02-08 14:08:31,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 145 transitions, 829 flow [2025-02-08 14:08:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:08:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:08:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 282 transitions. [2025-02-08 14:08:31,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5949367088607594 [2025-02-08 14:08:31,164 INFO L175 Difference]: Start difference. First operand has 107 places, 80 transitions, 320 flow. Second operand 6 states and 282 transitions. [2025-02-08 14:08:31,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 145 transitions, 829 flow [2025-02-08 14:08:31,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 145 transitions, 821 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:08:31,170 INFO L231 Difference]: Finished difference. Result has 110 places, 80 transitions, 325 flow [2025-02-08 14:08:31,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2025-02-08 14:08:31,170 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 36 predicate places. [2025-02-08 14:08:31,170 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 325 flow [2025-02-08 14:08:31,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:31,170 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:31,170 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:31,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 14:08:31,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:31,375 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:31,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:31,375 INFO L85 PathProgramCache]: Analyzing trace with hash -627208440, now seen corresponding path program 1 times [2025-02-08 14:08:31,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:31,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400769422] [2025-02-08 14:08:31,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:31,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 14:08:31,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 14:08:31,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:31,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:31,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:31,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400769422] [2025-02-08 14:08:31,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400769422] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:31,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978112221] [2025-02-08 14:08:31,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:31,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:31,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:31,423 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:31,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 14:08:31,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 14:08:31,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 14:08:31,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:31,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:31,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:08:31,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:31,521 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:31,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978112221] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:31,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:31,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2025-02-08 14:08:31,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652519054] [2025-02-08 14:08:31,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:31,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:31,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:31,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:31,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:31,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2025-02-08 14:08:31,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:31,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:31,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2025-02-08 14:08:31,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:31,755 INFO L124 PetriNetUnfolderBase]: 1647/3886 cut-off events. [2025-02-08 14:08:31,755 INFO L125 PetriNetUnfolderBase]: For 2892/2914 co-relation queries the response was YES. [2025-02-08 14:08:31,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9270 conditions, 3886 events. 1647/3886 cut-off events. For 2892/2914 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 29250 event pairs, 821 based on Foata normal form. 68/3698 useless extension candidates. Maximal degree in co-relation 9200. Up to 1556 conditions per place. [2025-02-08 14:08:31,766 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 73 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2025-02-08 14:08:31,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 99 transitions, 568 flow [2025-02-08 14:08:31,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2025-02-08 14:08:31,767 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6075949367088608 [2025-02-08 14:08:31,767 INFO L175 Difference]: Start difference. First operand has 110 places, 80 transitions, 325 flow. Second operand 4 states and 192 transitions. [2025-02-08 14:08:31,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 99 transitions, 568 flow [2025-02-08 14:08:31,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 99 transitions, 554 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:08:31,773 INFO L231 Difference]: Finished difference. Result has 108 places, 79 transitions, 318 flow [2025-02-08 14:08:31,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=108, PETRI_TRANSITIONS=79} [2025-02-08 14:08:31,774 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2025-02-08 14:08:31,774 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 79 transitions, 318 flow [2025-02-08 14:08:31,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:31,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:31,774 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:31,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 14:08:31,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:31,975 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:31,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:31,976 INFO L85 PathProgramCache]: Analyzing trace with hash -823833986, now seen corresponding path program 1 times [2025-02-08 14:08:31,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:31,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287128997] [2025-02-08 14:08:31,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:31,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:31,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 14:08:31,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 14:08:31,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:31,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:32,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:32,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287128997] [2025-02-08 14:08:32,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287128997] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:32,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714582055] [2025-02-08 14:08:32,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:32,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:32,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:32,032 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:32,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 14:08:32,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 14:08:32,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 14:08:32,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:32,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:32,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:08:32,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:32,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:32,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714582055] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:32,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:32,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2025-02-08 14:08:32,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353770503] [2025-02-08 14:08:32,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:32,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:08:32,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:32,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:08:32,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:08:32,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2025-02-08 14:08:32,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 79 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:32,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:32,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2025-02-08 14:08:32,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:32,622 INFO L124 PetriNetUnfolderBase]: 1994/4359 cut-off events. [2025-02-08 14:08:32,622 INFO L125 PetriNetUnfolderBase]: For 3096/3154 co-relation queries the response was YES. [2025-02-08 14:08:32,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10579 conditions, 4359 events. 1994/4359 cut-off events. For 3096/3154 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 31919 event pairs, 826 based on Foata normal form. 30/4185 useless extension candidates. Maximal degree in co-relation 10509. Up to 1543 conditions per place. [2025-02-08 14:08:32,635 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 135 selfloop transitions, 8 changer transitions 0/165 dead transitions. [2025-02-08 14:08:32,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 165 transitions, 964 flow [2025-02-08 14:08:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:08:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:08:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 329 transitions. [2025-02-08 14:08:32,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5949367088607594 [2025-02-08 14:08:32,638 INFO L175 Difference]: Start difference. First operand has 108 places, 79 transitions, 318 flow. Second operand 7 states and 329 transitions. [2025-02-08 14:08:32,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 165 transitions, 964 flow [2025-02-08 14:08:32,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 165 transitions, 957 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:08:32,646 INFO L231 Difference]: Finished difference. Result has 114 places, 80 transitions, 341 flow [2025-02-08 14:08:32,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=341, PETRI_PLACES=114, PETRI_TRANSITIONS=80} [2025-02-08 14:08:32,646 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 40 predicate places. [2025-02-08 14:08:32,646 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 80 transitions, 341 flow [2025-02-08 14:08:32,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:32,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:32,647 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:32,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:32,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-02-08 14:08:32,848 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:32,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2031344778, now seen corresponding path program 1 times [2025-02-08 14:08:32,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:32,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687737376] [2025-02-08 14:08:32,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:32,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 14:08:32,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 14:08:32,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:32,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:32,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:32,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687737376] [2025-02-08 14:08:32,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687737376] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:32,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064474996] [2025-02-08 14:08:32,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:32,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:32,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:32,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:32,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 14:08:32,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 14:08:32,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 14:08:32,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:32,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:32,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:08:32,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:33,008 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:33,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064474996] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:33,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:33,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2025-02-08 14:08:33,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889973261] [2025-02-08 14:08:33,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:33,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:33,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:33,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:33,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:33,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 79 [2025-02-08 14:08:33,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 80 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:33,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:33,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 79 [2025-02-08 14:08:33,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:33,256 INFO L124 PetriNetUnfolderBase]: 1779/4154 cut-off events. [2025-02-08 14:08:33,256 INFO L125 PetriNetUnfolderBase]: For 3648/3720 co-relation queries the response was YES. [2025-02-08 14:08:33,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10377 conditions, 4154 events. 1779/4154 cut-off events. For 3648/3720 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 31374 event pairs, 933 based on Foata normal form. 108/4018 useless extension candidates. Maximal degree in co-relation 10305. Up to 1722 conditions per place. [2025-02-08 14:08:33,272 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 76 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2025-02-08 14:08:33,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 100 transitions, 599 flow [2025-02-08 14:08:33,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:33,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2025-02-08 14:08:33,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5949367088607594 [2025-02-08 14:08:33,273 INFO L175 Difference]: Start difference. First operand has 114 places, 80 transitions, 341 flow. Second operand 4 states and 188 transitions. [2025-02-08 14:08:33,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 100 transitions, 599 flow [2025-02-08 14:08:33,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 100 transitions, 579 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:08:33,283 INFO L231 Difference]: Finished difference. Result has 112 places, 79 transitions, 329 flow [2025-02-08 14:08:33,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=112, PETRI_TRANSITIONS=79} [2025-02-08 14:08:33,283 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 38 predicate places. [2025-02-08 14:08:33,283 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 79 transitions, 329 flow [2025-02-08 14:08:33,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:33,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:33,284 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:33,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:33,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:33,484 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:33,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:33,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1149639810, now seen corresponding path program 1 times [2025-02-08 14:08:33,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:33,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434955654] [2025-02-08 14:08:33,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:33,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:33,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:08:33,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:08:33,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:33,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:33,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:33,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434955654] [2025-02-08 14:08:33,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434955654] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:33,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859344201] [2025-02-08 14:08:33,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:33,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:33,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:33,556 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:33,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 14:08:33,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:08:33,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:08:33,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:33,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:33,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:08:33,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:33,651 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:33,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859344201] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:33,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:33,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:08:33,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806819659] [2025-02-08 14:08:33,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:33,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:33,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:33,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:33,665 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2025-02-08 14:08:33,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 79 transitions, 329 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:33,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:33,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2025-02-08 14:08:33,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:33,957 INFO L124 PetriNetUnfolderBase]: 1850/4189 cut-off events. [2025-02-08 14:08:33,957 INFO L125 PetriNetUnfolderBase]: For 3178/3220 co-relation queries the response was YES. [2025-02-08 14:08:33,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10379 conditions, 4189 events. 1850/4189 cut-off events. For 3178/3220 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 30964 event pairs, 1198 based on Foata normal form. 88/4091 useless extension candidates. Maximal degree in co-relation 10307. Up to 2222 conditions per place. [2025-02-08 14:08:33,973 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 115 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2025-02-08 14:08:33,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 142 transitions, 835 flow [2025-02-08 14:08:33,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:08:33,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:08:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2025-02-08 14:08:33,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6379746835443038 [2025-02-08 14:08:33,974 INFO L175 Difference]: Start difference. First operand has 112 places, 79 transitions, 329 flow. Second operand 5 states and 252 transitions. [2025-02-08 14:08:33,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 142 transitions, 835 flow [2025-02-08 14:08:33,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 142 transitions, 827 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:08:33,985 INFO L231 Difference]: Finished difference. Result has 112 places, 78 transitions, 328 flow [2025-02-08 14:08:33,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=112, PETRI_TRANSITIONS=78} [2025-02-08 14:08:33,985 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 38 predicate places. [2025-02-08 14:08:33,985 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 78 transitions, 328 flow [2025-02-08 14:08:33,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:33,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:33,986 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:33,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:34,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:34,190 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:34,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:34,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1149638817, now seen corresponding path program 1 times [2025-02-08 14:08:34,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:34,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429200327] [2025-02-08 14:08:34,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:34,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:34,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:08:34,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:08:34,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:34,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:34,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:34,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429200327] [2025-02-08 14:08:34,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429200327] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:34,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38540076] [2025-02-08 14:08:34,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:34,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:34,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:34,246 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:34,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 14:08:34,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:08:34,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:08:34,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:34,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:34,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:08:34,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:34,347 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:34,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38540076] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:34,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:34,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:08:34,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003944884] [2025-02-08 14:08:34,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:34,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:34,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:34,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:34,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:34,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 79 [2025-02-08 14:08:34,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 78 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:34,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:34,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 79 [2025-02-08 14:08:34,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:34,658 INFO L124 PetriNetUnfolderBase]: 2055/4366 cut-off events. [2025-02-08 14:08:34,658 INFO L125 PetriNetUnfolderBase]: For 3352/3388 co-relation queries the response was YES. [2025-02-08 14:08:34,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11267 conditions, 4366 events. 2055/4366 cut-off events. For 3352/3388 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30955 event pairs, 1197 based on Foata normal form. 82/4270 useless extension candidates. Maximal degree in co-relation 11196. Up to 2213 conditions per place. [2025-02-08 14:08:34,677 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 95 selfloop transitions, 3 changer transitions 4/121 dead transitions. [2025-02-08 14:08:34,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 121 transitions, 716 flow [2025-02-08 14:08:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2025-02-08 14:08:34,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6645569620253164 [2025-02-08 14:08:34,678 INFO L175 Difference]: Start difference. First operand has 112 places, 78 transitions, 328 flow. Second operand 4 states and 210 transitions. [2025-02-08 14:08:34,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 121 transitions, 716 flow [2025-02-08 14:08:34,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 121 transitions, 704 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:08:34,689 INFO L231 Difference]: Finished difference. Result has 111 places, 78 transitions, 326 flow [2025-02-08 14:08:34,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=111, PETRI_TRANSITIONS=78} [2025-02-08 14:08:34,689 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 37 predicate places. [2025-02-08 14:08:34,689 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 78 transitions, 326 flow [2025-02-08 14:08:34,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:34,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:34,690 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:34,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:34,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:34,890 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:34,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1452820629, now seen corresponding path program 1 times [2025-02-08 14:08:34,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:34,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499548305] [2025-02-08 14:08:34,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:34,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:34,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:08:34,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:08:34,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:34,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:34,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:34,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499548305] [2025-02-08 14:08:34,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499548305] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:34,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383968043] [2025-02-08 14:08:34,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:34,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:34,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:34,949 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:34,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 14:08:35,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:08:35,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:08:35,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:35,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:35,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:08:35,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:35,073 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:35,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383968043] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:35,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:35,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:08:35,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662915730] [2025-02-08 14:08:35,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:35,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:35,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:35,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:35,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:35,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2025-02-08 14:08:35,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 78 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2025-02-08 14:08:35,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:35,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2025-02-08 14:08:35,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:35,501 INFO L124 PetriNetUnfolderBase]: 1803/4134 cut-off events. [2025-02-08 14:08:35,501 INFO L125 PetriNetUnfolderBase]: For 2980/3018 co-relation queries the response was YES. [2025-02-08 14:08:35,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10455 conditions, 4134 events. 1803/4134 cut-off events. For 2980/3018 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30700 event pairs, 1293 based on Foata normal form. 88/3976 useless extension candidates. Maximal degree in co-relation 10385. Up to 2343 conditions per place. [2025-02-08 14:08:35,519 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 118 selfloop transitions, 4 changer transitions 0/142 dead transitions. [2025-02-08 14:08:35,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 142 transitions, 871 flow [2025-02-08 14:08:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:08:35,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:08:35,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 251 transitions. [2025-02-08 14:08:35,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6354430379746835 [2025-02-08 14:08:35,521 INFO L175 Difference]: Start difference. First operand has 111 places, 78 transitions, 326 flow. Second operand 5 states and 251 transitions. [2025-02-08 14:08:35,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 142 transitions, 871 flow [2025-02-08 14:08:35,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 142 transitions, 839 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-08 14:08:35,545 INFO L231 Difference]: Finished difference. Result has 112 places, 77 transitions, 317 flow [2025-02-08 14:08:35,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=112, PETRI_TRANSITIONS=77} [2025-02-08 14:08:35,546 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 38 predicate places. [2025-02-08 14:08:35,546 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 77 transitions, 317 flow [2025-02-08 14:08:35,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2025-02-08 14:08:35,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:35,546 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:35,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 14:08:35,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-08 14:08:35,747 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:35,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:35,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1452821622, now seen corresponding path program 1 times [2025-02-08 14:08:35,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:35,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798512178] [2025-02-08 14:08:35,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:35,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:35,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:08:35,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:08:35,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:35,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:35,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:35,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798512178] [2025-02-08 14:08:35,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798512178] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:35,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986255252] [2025-02-08 14:08:35,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:35,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:35,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:35,849 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:35,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 14:08:35,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:08:35,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:08:35,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:35,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:35,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:08:35,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:36,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:36,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986255252] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:36,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:36,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2025-02-08 14:08:36,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381876744] [2025-02-08 14:08:36,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:36,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:08:36,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:36,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:08:36,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:08:36,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2025-02-08 14:08:36,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 77 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:36,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:36,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2025-02-08 14:08:36,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:36,359 INFO L124 PetriNetUnfolderBase]: 1877/4158 cut-off events. [2025-02-08 14:08:36,360 INFO L125 PetriNetUnfolderBase]: For 2826/2868 co-relation queries the response was YES. [2025-02-08 14:08:36,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10626 conditions, 4158 events. 1877/4158 cut-off events. For 2826/2868 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 30152 event pairs, 1365 based on Foata normal form. 92/4104 useless extension candidates. Maximal degree in co-relation 10557. Up to 2466 conditions per place. [2025-02-08 14:08:36,376 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 118 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2025-02-08 14:08:36,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 142 transitions, 849 flow [2025-02-08 14:08:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:08:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:08:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 279 transitions. [2025-02-08 14:08:36,377 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5886075949367089 [2025-02-08 14:08:36,377 INFO L175 Difference]: Start difference. First operand has 112 places, 77 transitions, 317 flow. Second operand 6 states and 279 transitions. [2025-02-08 14:08:36,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 142 transitions, 849 flow [2025-02-08 14:08:36,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 142 transitions, 841 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:08:36,443 INFO L231 Difference]: Finished difference. Result has 115 places, 77 transitions, 322 flow [2025-02-08 14:08:36,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=115, PETRI_TRANSITIONS=77} [2025-02-08 14:08:36,444 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 41 predicate places. [2025-02-08 14:08:36,444 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 77 transitions, 322 flow [2025-02-08 14:08:36,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:36,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:36,444 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:36,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 14:08:36,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:36,645 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:36,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:36,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1400820616, now seen corresponding path program 1 times [2025-02-08 14:08:36,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:36,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276997880] [2025-02-08 14:08:36,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:36,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:36,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 14:08:36,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 14:08:36,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:36,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:36,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:36,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276997880] [2025-02-08 14:08:36,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276997880] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:36,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451606443] [2025-02-08 14:08:36,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:36,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:36,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:36,690 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:36,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 14:08:36,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 14:08:36,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 14:08:36,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:36,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:36,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:08:36,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:36,783 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:36,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451606443] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:36,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:36,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:08:36,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529948462] [2025-02-08 14:08:36,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:36,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:36,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:36,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:36,803 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2025-02-08 14:08:36,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 77 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:36,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:36,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2025-02-08 14:08:36,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:37,066 INFO L124 PetriNetUnfolderBase]: 1813/4004 cut-off events. [2025-02-08 14:08:37,067 INFO L125 PetriNetUnfolderBase]: For 2894/2912 co-relation queries the response was YES. [2025-02-08 14:08:37,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10428 conditions, 4004 events. 1813/4004 cut-off events. For 2894/2912 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 28790 event pairs, 1331 based on Foata normal form. 64/3924 useless extension candidates. Maximal degree in co-relation 10357. Up to 2453 conditions per place. [2025-02-08 14:08:37,083 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 84 selfloop transitions, 3 changer transitions 12/119 dead transitions. [2025-02-08 14:08:37,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 119 transitions, 706 flow [2025-02-08 14:08:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 211 transitions. [2025-02-08 14:08:37,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6677215189873418 [2025-02-08 14:08:37,084 INFO L175 Difference]: Start difference. First operand has 115 places, 77 transitions, 322 flow. Second operand 4 states and 211 transitions. [2025-02-08 14:08:37,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 119 transitions, 706 flow [2025-02-08 14:08:37,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 119 transitions, 686 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:08:37,092 INFO L231 Difference]: Finished difference. Result has 113 places, 73 transitions, 303 flow [2025-02-08 14:08:37,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=303, PETRI_PLACES=113, PETRI_TRANSITIONS=73} [2025-02-08 14:08:37,092 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 39 predicate places. [2025-02-08 14:08:37,092 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 73 transitions, 303 flow [2025-02-08 14:08:37,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:37,093 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:37,093 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:37,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:37,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-08 14:08:37,294 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:37,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:37,294 INFO L85 PathProgramCache]: Analyzing trace with hash -2087796627, now seen corresponding path program 1 times [2025-02-08 14:08:37,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:37,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815071458] [2025-02-08 14:08:37,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:37,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:37,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 14:08:37,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 14:08:37,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:37,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:37,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:37,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815071458] [2025-02-08 14:08:37,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815071458] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:37,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114421362] [2025-02-08 14:08:37,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:37,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:37,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:37,354 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:37,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 14:08:37,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 14:08:37,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 14:08:37,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:37,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:37,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:08:37,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:37,547 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:37,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114421362] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:37,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:37,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2025-02-08 14:08:37,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207528820] [2025-02-08 14:08:37,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:37,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:08:37,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:37,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:08:37,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:08:37,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2025-02-08 14:08:37,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 73 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:37,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:37,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2025-02-08 14:08:37,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:37,937 INFO L124 PetriNetUnfolderBase]: 1679/3710 cut-off events. [2025-02-08 14:08:37,937 INFO L125 PetriNetUnfolderBase]: For 2598/2598 co-relation queries the response was YES. [2025-02-08 14:08:37,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9750 conditions, 3710 events. 1679/3710 cut-off events. For 2598/2598 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 26231 event pairs, 717 based on Foata normal form. 100/3722 useless extension candidates. Maximal degree in co-relation 9681. Up to 1350 conditions per place. [2025-02-08 14:08:37,950 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 136 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2025-02-08 14:08:37,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 162 transitions, 1013 flow [2025-02-08 14:08:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:08:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:08:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 322 transitions. [2025-02-08 14:08:37,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5822784810126582 [2025-02-08 14:08:37,951 INFO L175 Difference]: Start difference. First operand has 113 places, 73 transitions, 303 flow. Second operand 7 states and 322 transitions. [2025-02-08 14:08:37,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 162 transitions, 1013 flow [2025-02-08 14:08:37,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 162 transitions, 973 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-02-08 14:08:37,958 INFO L231 Difference]: Finished difference. Result has 111 places, 74 transitions, 313 flow [2025-02-08 14:08:37,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=111, PETRI_TRANSITIONS=74} [2025-02-08 14:08:37,958 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 37 predicate places. [2025-02-08 14:08:37,958 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 74 transitions, 313 flow [2025-02-08 14:08:37,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:37,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:37,959 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:37,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 14:08:38,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-08 14:08:38,160 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:38,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash 621503633, now seen corresponding path program 1 times [2025-02-08 14:08:38,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:38,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089274233] [2025-02-08 14:08:38,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:38,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:38,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 14:08:38,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 14:08:38,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:38,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:38,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:38,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089274233] [2025-02-08 14:08:38,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089274233] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:38,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800066126] [2025-02-08 14:08:38,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:38,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:38,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:38,212 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:38,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 14:08:38,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 14:08:38,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 14:08:38,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:38,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:38,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:08:38,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:38,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:38,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800066126] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:38,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:38,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:08:38,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622148] [2025-02-08 14:08:38,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:38,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:38,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:38,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:38,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:38,312 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2025-02-08 14:08:38,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 74 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:38,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:38,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2025-02-08 14:08:38,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:38,603 INFO L124 PetriNetUnfolderBase]: 1531/3502 cut-off events. [2025-02-08 14:08:38,603 INFO L125 PetriNetUnfolderBase]: For 2695/2705 co-relation queries the response was YES. [2025-02-08 14:08:38,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9279 conditions, 3502 events. 1531/3502 cut-off events. For 2695/2705 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 25102 event pairs, 1005 based on Foata normal form. 60/3432 useless extension candidates. Maximal degree in co-relation 9209. Up to 1847 conditions per place. [2025-02-08 14:08:38,620 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 115 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2025-02-08 14:08:38,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 139 transitions, 843 flow [2025-02-08 14:08:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:08:38,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:08:38,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2025-02-08 14:08:38,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6227848101265823 [2025-02-08 14:08:38,622 INFO L175 Difference]: Start difference. First operand has 111 places, 74 transitions, 313 flow. Second operand 5 states and 246 transitions. [2025-02-08 14:08:38,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 139 transitions, 843 flow [2025-02-08 14:08:38,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 139 transitions, 830 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:08:38,633 INFO L231 Difference]: Finished difference. Result has 109 places, 73 transitions, 303 flow [2025-02-08 14:08:38,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=109, PETRI_TRANSITIONS=73} [2025-02-08 14:08:38,633 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 35 predicate places. [2025-02-08 14:08:38,633 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 73 transitions, 303 flow [2025-02-08 14:08:38,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:38,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:38,633 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:38,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-08 14:08:38,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:38,834 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:38,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:38,835 INFO L85 PathProgramCache]: Analyzing trace with hash 621502640, now seen corresponding path program 1 times [2025-02-08 14:08:38,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:38,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421536617] [2025-02-08 14:08:38,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:38,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:38,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 14:08:38,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 14:08:38,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:38,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:38,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:38,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421536617] [2025-02-08 14:08:38,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421536617] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:38,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198028950] [2025-02-08 14:08:38,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:38,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:38,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:38,886 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:38,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 14:08:38,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 14:08:38,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 14:08:38,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:38,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:38,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:08:38,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:38,994 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:38,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198028950] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:38,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:38,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:08:38,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668990039] [2025-02-08 14:08:38,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:38,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:38,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:38,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:38,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:39,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 79 [2025-02-08 14:08:39,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 73 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:39,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:39,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 79 [2025-02-08 14:08:39,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:39,267 INFO L124 PetriNetUnfolderBase]: 1753/3678 cut-off events. [2025-02-08 14:08:39,267 INFO L125 PetriNetUnfolderBase]: For 2495/2499 co-relation queries the response was YES. [2025-02-08 14:08:39,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10094 conditions, 3678 events. 1753/3678 cut-off events. For 2495/2499 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 24920 event pairs, 1149 based on Foata normal form. 54/3640 useless extension candidates. Maximal degree in co-relation 10025. Up to 2095 conditions per place. [2025-02-08 14:08:39,279 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 74 selfloop transitions, 1 changer transitions 27/118 dead transitions. [2025-02-08 14:08:39,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 118 transitions, 711 flow [2025-02-08 14:08:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2025-02-08 14:08:39,280 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6518987341772152 [2025-02-08 14:08:39,281 INFO L175 Difference]: Start difference. First operand has 109 places, 73 transitions, 303 flow. Second operand 4 states and 206 transitions. [2025-02-08 14:08:39,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 118 transitions, 711 flow [2025-02-08 14:08:39,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 118 transitions, 699 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:08:39,291 INFO L231 Difference]: Finished difference. Result has 107 places, 69 transitions, 277 flow [2025-02-08 14:08:39,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=107, PETRI_TRANSITIONS=69} [2025-02-08 14:08:39,292 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 33 predicate places. [2025-02-08 14:08:39,292 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 69 transitions, 277 flow [2025-02-08 14:08:39,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:39,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:39,292 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:39,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:39,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:39,494 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-08 14:08:39,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:39,494 INFO L85 PathProgramCache]: Analyzing trace with hash -593172889, now seen corresponding path program 1 times [2025-02-08 14:08:39,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:39,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588042886] [2025-02-08 14:08:39,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:39,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:39,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 14:08:39,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 14:08:39,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:39,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:39,542 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:08:39,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:39,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588042886] [2025-02-08 14:08:39,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588042886] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:08:39,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607281949] [2025-02-08 14:08:39,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:39,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:08:39,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:39,545 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:08:39,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 14:08:39,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-08 14:08:39,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 14:08:39,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:39,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:39,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 14:08:39,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:08:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 14:08:39,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:08:39,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607281949] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:39,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:08:39,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-02-08 14:08:39,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849026484] [2025-02-08 14:08:39,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:39,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:39,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:39,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:39,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:08:39,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2025-02-08 14:08:39,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 69 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:39,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:39,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2025-02-08 14:08:39,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:39,961 INFO L124 PetriNetUnfolderBase]: 1161/2564 cut-off events. [2025-02-08 14:08:39,961 INFO L125 PetriNetUnfolderBase]: For 1405/1405 co-relation queries the response was YES. [2025-02-08 14:08:39,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6767 conditions, 2564 events. 1161/2564 cut-off events. For 1405/1405 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16694 event pairs, 933 based on Foata normal form. 50/2484 useless extension candidates. Maximal degree in co-relation 6749. Up to 1723 conditions per place. [2025-02-08 14:08:39,967 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 0 selfloop transitions, 0 changer transitions 112/112 dead transitions. [2025-02-08 14:08:39,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 112 transitions, 661 flow [2025-02-08 14:08:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:08:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:08:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2025-02-08 14:08:39,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6455696202531646 [2025-02-08 14:08:39,969 INFO L175 Difference]: Start difference. First operand has 107 places, 69 transitions, 277 flow. Second operand 4 states and 204 transitions. [2025-02-08 14:08:39,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 112 transitions, 661 flow [2025-02-08 14:08:39,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 653 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 14:08:39,973 INFO L231 Difference]: Finished difference. Result has 102 places, 0 transitions, 0 flow [2025-02-08 14:08:39,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=102, PETRI_TRANSITIONS=0} [2025-02-08 14:08:39,973 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2025-02-08 14:08:39,974 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 0 transitions, 0 flow [2025-02-08 14:08:39,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:08:39,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2025-02-08 14:08:39,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2025-02-08 14:08:39,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2025-02-08 14:08:39,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2025-02-08 14:08:39,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2025-02-08 14:08:39,977 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2025-02-08 14:08:39,977 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2025-02-08 14:08:39,980 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2025-02-08 14:08:39,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2025-02-08 14:08:39,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-02-08 14:08:40,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-02-08 14:08:40,182 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:08:40,186 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 14:08:40,186 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 14:08:40,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 02:08:40 BasicIcfg [2025-02-08 14:08:40,189 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 14:08:40,190 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:08:40,190 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:08:40,190 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:08:40,190 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:08:19" (3/4) ... [2025-02-08 14:08:40,191 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 14:08:40,193 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-08 14:08:40,193 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-08 14:08:40,196 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 80 nodes and edges [2025-02-08 14:08:40,196 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2025-02-08 14:08:40,196 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2025-02-08 14:08:40,196 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-08 14:08:40,196 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 14:08:40,263 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:08:40,263 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 14:08:40,263 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:08:40,264 INFO L158 Benchmark]: Toolchain (without parser) took 21867.06ms. Allocated memory was 142.6MB in the beginning and 587.2MB in the end (delta: 444.6MB). Free memory was 111.2MB in the beginning and 212.1MB in the end (delta: -100.9MB). Peak memory consumption was 342.7MB. Max. memory is 16.1GB. [2025-02-08 14:08:40,264 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 201.3MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:08:40,264 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.90ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 98.1MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:08:40,264 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.28ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 95.9MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:08:40,264 INFO L158 Benchmark]: Boogie Preprocessor took 29.14ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 94.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:08:40,264 INFO L158 Benchmark]: IcfgBuilder took 682.78ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 96.2MB in the end (delta: -2.1MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. [2025-02-08 14:08:40,265 INFO L158 Benchmark]: TraceAbstraction took 20847.78ms. Allocated memory was 142.6MB in the beginning and 587.2MB in the end (delta: 444.6MB). Free memory was 96.2MB in the beginning and 220.5MB in the end (delta: -124.3MB). Peak memory consumption was 319.9MB. Max. memory is 16.1GB. [2025-02-08 14:08:40,265 INFO L158 Benchmark]: Witness Printer took 73.74ms. Allocated memory is still 587.2MB. Free memory was 220.5MB in the beginning and 212.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:08:40,266 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 201.3MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.90ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 98.1MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.28ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 95.9MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.14ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 94.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 682.78ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 96.2MB in the end (delta: -2.1MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. * TraceAbstraction took 20847.78ms. Allocated memory was 142.6MB in the beginning and 587.2MB in the end (delta: 444.6MB). Free memory was 96.2MB in the beginning and 220.5MB in the end (delta: -124.3MB). Peak memory consumption was 319.9MB. Max. memory is 16.1GB. * Witness Printer took 73.74ms. Allocated memory is still 587.2MB. Free memory was 220.5MB in the beginning and 212.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.7s, OverallIterations: 32, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1954 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1674 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5545 IncrementalHoareTripleChecker+Invalid, 5627 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 59 mSDtfsCounter, 5545 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 781 GetRequests, 571 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=22, InterpolantAutomatonStates: 156, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1255 NumberOfCodeBlocks, 1231 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 1233 ConstructedInterpolants, 0 QuantifiedInterpolants, 2781 SizeOfPredicates, 39 NumberOfNonLiveVariables, 3903 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 59 InterpolantComputations, 29 PerfectInterpolantSequences, 646/726 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 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 14:08:40,293 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