./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-min-array.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 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:53:33,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:53:34,002 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:53:34,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:53:34,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:53:34,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:53:34,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:53:34,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:53:34,019 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:53:34,019 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:53:34,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:53:34,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:53:34,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:53:34,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:53:34,020 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:53:34,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:53:34,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:53:34,020 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:53:34,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:53:34,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:53:34,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:53:34,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:53:34,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:53:34,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:53:34,021 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:53:34,021 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:53:34,021 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:53:34,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:53:34,021 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:53:34,021 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:53:34,021 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:53:34,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:53:34,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:53:34,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:53:34,023 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 -> 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 [2025-02-06 18:53:34,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:53:34,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:53:34,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:53:34,239 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:53:34,240 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:53:34,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2025-02-06 18:53:35,370 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b997f0f0e/ec03d822e9a9480eab257fc655bad1d7/FLAGba0c27bcd [2025-02-06 18:53:35,651 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:53:35,654 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2025-02-06 18:53:35,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b997f0f0e/ec03d822e9a9480eab257fc655bad1d7/FLAGba0c27bcd [2025-02-06 18:53:35,941 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b997f0f0e/ec03d822e9a9480eab257fc655bad1d7 [2025-02-06 18:53:35,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:53:35,944 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:53:35,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:53:35,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:53:35,948 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:53:35,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:53:35" (1/1) ... [2025-02-06 18:53:35,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a2629a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:35, skipping insertion in model container [2025-02-06 18:53:35,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:53:35" (1/1) ... [2025-02-06 18:53:35,961 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:53:36,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:53:36,070 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:53:36,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:53:36,099 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:53:36,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36 WrapperNode [2025-02-06 18:53:36,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:53:36,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:53:36,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:53:36,100 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:53:36,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,120 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 87 [2025-02-06 18:53:36,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:53:36,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:53:36,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:53:36,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:53:36,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,129 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,137 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-06 18:53:36,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,145 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:53:36,150 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:53:36,150 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:53:36,150 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:53:36,151 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (1/1) ... [2025-02-06 18:53:36,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:53:36,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:36,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:53:36,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:53:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:53:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:53:36,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:53:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:53:36,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:53:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 18:53:36,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 18:53:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:53:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:53:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:53:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:53:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:53:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:53:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:53:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:53:36,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:53:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:53:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:53:36,207 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:53:36,285 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:53:36,286 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:53:36,527 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:53:36,527 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:53:36,719 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:53:36,719 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:53:36,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:53:36 BoogieIcfgContainer [2025-02-06 18:53:36,720 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:53:36,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:53:36,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:53:36,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:53:36,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:53:35" (1/3) ... [2025-02-06 18:53:36,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc946b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:53:36, skipping insertion in model container [2025-02-06 18:53:36,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:53:36" (2/3) ... [2025-02-06 18:53:36,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc946b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:53:36, skipping insertion in model container [2025-02-06 18:53:36,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:53:36" (3/3) ... [2025-02-06 18:53:36,729 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2025-02-06 18:53:36,741 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:53:36,742 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-min-array.wvr.c that has 4 procedures, 44 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2025-02-06 18:53:36,742 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:53:36,787 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 18:53:36,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2025-02-06 18:53:36,848 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2025-02-06 18:53:36,853 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 18:53:36,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 96 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2025-02-06 18:53:36,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2025-02-06 18:53:36,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 42 transitions, 99 flow [2025-02-06 18:53:36,872 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:53:36,885 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;@3cf69042, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:53:36,885 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-02-06 18:53:36,889 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:53:36,891 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:53:36,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:53:36,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:36,892 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:53:36,892 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:36,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:36,896 INFO L85 PathProgramCache]: Analyzing trace with hash 381478, now seen corresponding path program 1 times [2025-02-06 18:53:36,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:36,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932360137] [2025-02-06 18:53:36,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:36,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:36,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:53:36,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:53:36,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:36,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:37,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:37,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932360137] [2025-02-06 18:53:37,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932360137] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:37,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:37,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:53:37,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939680959] [2025-02-06 18:53:37,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:37,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:37,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:37,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:37,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:37,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-02-06 18:53:37,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:37,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:37,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-02-06 18:53:37,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:37,305 INFO L124 PetriNetUnfolderBase]: 431/833 cut-off events. [2025-02-06 18:53:37,305 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2025-02-06 18:53:37,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 833 events. 431/833 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4359 event pairs, 306 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 1365. Up to 625 conditions per place. [2025-02-06 18:53:37,313 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 25 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2025-02-06 18:53:37,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 163 flow [2025-02-06 18:53:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:37,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2025-02-06 18:53:37,323 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2025-02-06 18:53:37,324 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 99 flow. Second operand 4 states and 107 transitions. [2025-02-06 18:53:37,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 163 flow [2025-02-06 18:53:37,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 154 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 18:53:37,330 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2025-02-06 18:53:37,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2025-02-06 18:53:37,334 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2025-02-06 18:53:37,334 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2025-02-06 18:53:37,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:37,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:37,334 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:53:37,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:53:37,335 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:37,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:37,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1519981387, now seen corresponding path program 1 times [2025-02-06 18:53:37,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:37,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068500324] [2025-02-06 18:53:37,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:37,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:37,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:53:37,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:53:37,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:37,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:37,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:37,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068500324] [2025-02-06 18:53:37,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068500324] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:37,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893068041] [2025-02-06 18:53:37,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:37,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:37,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:37,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:53:37,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:53:37,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:53:37,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:37,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:37,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:53:37,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:37,559 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:53:37,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893068041] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:37,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:53:37,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:53:37,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842167906] [2025-02-06 18:53:37,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:37,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:53:37,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:37,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:53:37,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:53:37,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-02-06 18:53:37,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:37,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:37,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-02-06 18:53:37,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:37,750 INFO L124 PetriNetUnfolderBase]: 431/832 cut-off events. [2025-02-06 18:53:37,750 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-02-06 18:53:37,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 832 events. 431/832 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4368 event pairs, 306 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 1483. Up to 620 conditions per place. [2025-02-06 18:53:37,760 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 21 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2025-02-06 18:53:37,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 171 flow [2025-02-06 18:53:37,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:53:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:53:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2025-02-06 18:53:37,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2025-02-06 18:53:37,762 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 6 states and 143 transitions. [2025-02-06 18:53:37,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 171 flow [2025-02-06 18:53:37,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:37,764 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 126 flow [2025-02-06 18:53:37,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2025-02-06 18:53:37,764 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2025-02-06 18:53:37,764 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 126 flow [2025-02-06 18:53:37,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:37,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:37,766 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:53:37,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:53:37,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:37,968 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:37,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash 125217569, now seen corresponding path program 1 times [2025-02-06 18:53:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102390387] [2025-02-06 18:53:37,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:37,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:53:37,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:53:37,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:37,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:38,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:38,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102390387] [2025-02-06 18:53:38,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102390387] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:38,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635379432] [2025-02-06 18:53:38,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:38,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:38,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:38,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:38,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:53:38,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:53:38,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:53:38,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:38,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:38,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:53:38,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:38,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:38,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635379432] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:38,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:38,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 18:53:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126560543] [2025-02-06 18:53:38,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:38,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:53:38,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:38,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:53:38,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:53:38,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-02-06 18:53:38,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 126 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:38,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:38,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-02-06 18:53:38,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:38,350 INFO L124 PetriNetUnfolderBase]: 434/844 cut-off events. [2025-02-06 18:53:38,350 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2025-02-06 18:53:38,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 844 events. 434/844 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4455 event pairs, 306 based on Foata normal form. 3/778 useless extension candidates. Maximal degree in co-relation 1484. Up to 627 conditions per place. [2025-02-06 18:53:38,355 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2025-02-06 18:53:38,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 254 flow [2025-02-06 18:53:38,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:53:38,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:53:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2025-02-06 18:53:38,357 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2025-02-06 18:53:38,357 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 126 flow. Second operand 10 states and 230 transitions. [2025-02-06 18:53:38,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 254 flow [2025-02-06 18:53:38,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 208 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-02-06 18:53:38,359 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 178 flow [2025-02-06 18:53:38,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2025-02-06 18:53:38,361 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2025-02-06 18:53:38,361 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 178 flow [2025-02-06 18:53:38,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:38,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:38,362 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:38,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 18:53:38,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:38,563 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:38,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:38,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1619877133, now seen corresponding path program 1 times [2025-02-06 18:53:38,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:38,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533084619] [2025-02-06 18:53:38,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:38,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:38,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:53:38,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:53:38,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:38,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:38,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533084619] [2025-02-06 18:53:38,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533084619] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:38,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:38,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:53:38,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25728593] [2025-02-06 18:53:38,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:38,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:38,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:38,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:38,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:38,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-02-06 18:53:38,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:38,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:38,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-02-06 18:53:38,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:38,830 INFO L124 PetriNetUnfolderBase]: 1064/1850 cut-off events. [2025-02-06 18:53:38,830 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-02-06 18:53:38,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3496 conditions, 1850 events. 1064/1850 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10212 event pairs, 449 based on Foata normal form. 42/1790 useless extension candidates. Maximal degree in co-relation 3462. Up to 1096 conditions per place. [2025-02-06 18:53:38,838 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 65 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2025-02-06 18:53:38,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 382 flow [2025-02-06 18:53:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:38,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2025-02-06 18:53:38,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6968085106382979 [2025-02-06 18:53:38,840 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 178 flow. Second operand 4 states and 131 transitions. [2025-02-06 18:53:38,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 382 flow [2025-02-06 18:53:38,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 371 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 18:53:38,842 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 196 flow [2025-02-06 18:53:38,842 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2025-02-06 18:53:38,842 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2025-02-06 18:53:38,842 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 196 flow [2025-02-06 18:53:38,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:38,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:38,843 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:38,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:53:38,843 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:38,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1845383789, now seen corresponding path program 1 times [2025-02-06 18:53:38,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:38,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943444143] [2025-02-06 18:53:38,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:38,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:53:38,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:53:38,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:38,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:38,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:38,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943444143] [2025-02-06 18:53:38,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943444143] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:38,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:38,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:53:38,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579572771] [2025-02-06 18:53:38,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:38,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:38,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:38,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:38,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:38,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-02-06 18:53:38,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:38,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:38,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-02-06 18:53:38,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:39,135 INFO L124 PetriNetUnfolderBase]: 1708/2792 cut-off events. [2025-02-06 18:53:39,136 INFO L125 PetriNetUnfolderBase]: For 769/1064 co-relation queries the response was YES. [2025-02-06 18:53:39,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6051 conditions, 2792 events. 1708/2792 cut-off events. For 769/1064 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15453 event pairs, 787 based on Foata normal form. 163/2838 useless extension candidates. Maximal degree in co-relation 6015. Up to 1698 conditions per place. [2025-02-06 18:53:39,149 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 69 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2025-02-06 18:53:39,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 438 flow [2025-02-06 18:53:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2025-02-06 18:53:39,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6861702127659575 [2025-02-06 18:53:39,151 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 196 flow. Second operand 4 states and 129 transitions. [2025-02-06 18:53:39,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 438 flow [2025-02-06 18:53:39,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:39,153 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 222 flow [2025-02-06 18:53:39,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2025-02-06 18:53:39,154 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2025-02-06 18:53:39,154 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 222 flow [2025-02-06 18:53:39,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:39,154 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:39,154 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:39,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:53:39,154 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:39,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:39,156 INFO L85 PathProgramCache]: Analyzing trace with hash -699558746, now seen corresponding path program 1 times [2025-02-06 18:53:39,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:39,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980135884] [2025-02-06 18:53:39,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:39,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:39,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:53:39,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:53:39,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:39,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:39,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:39,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980135884] [2025-02-06 18:53:39,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980135884] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:39,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:39,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:53:39,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919559904] [2025-02-06 18:53:39,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:39,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:53:39,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:39,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:53:39,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:53:39,235 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2025-02-06 18:53:39,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:39,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:39,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2025-02-06 18:53:39,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:39,411 INFO L124 PetriNetUnfolderBase]: 1059/1948 cut-off events. [2025-02-06 18:53:39,411 INFO L125 PetriNetUnfolderBase]: For 773/1030 co-relation queries the response was YES. [2025-02-06 18:53:39,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 1948 events. 1059/1948 cut-off events. For 773/1030 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11501 event pairs, 724 based on Foata normal form. 92/1904 useless extension candidates. Maximal degree in co-relation 4333. Up to 1469 conditions per place. [2025-02-06 18:53:39,424 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2025-02-06 18:53:39,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 297 flow [2025-02-06 18:53:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:53:39,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:53:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2025-02-06 18:53:39,425 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2025-02-06 18:53:39,425 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 222 flow. Second operand 3 states and 90 transitions. [2025-02-06 18:53:39,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 297 flow [2025-02-06 18:53:39,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:53:39,428 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 220 flow [2025-02-06 18:53:39,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2025-02-06 18:53:39,429 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2025-02-06 18:53:39,429 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 220 flow [2025-02-06 18:53:39,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:39,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:39,429 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:39,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:53:39,430 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:39,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:39,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1735398665, now seen corresponding path program 1 times [2025-02-06 18:53:39,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:39,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55345288] [2025-02-06 18:53:39,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:39,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:39,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:53:39,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:53:39,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:39,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:53:39,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:39,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55345288] [2025-02-06 18:53:39,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55345288] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:39,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:39,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:53:39,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125041501] [2025-02-06 18:53:39,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:39,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:53:39,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:39,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:53:39,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:53:39,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-02-06 18:53:39,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:39,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:39,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-02-06 18:53:39,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:39,751 INFO L124 PetriNetUnfolderBase]: 1495/2340 cut-off events. [2025-02-06 18:53:39,752 INFO L125 PetriNetUnfolderBase]: For 918/1325 co-relation queries the response was YES. [2025-02-06 18:53:39,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5474 conditions, 2340 events. 1495/2340 cut-off events. For 918/1325 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12041 event pairs, 388 based on Foata normal form. 220/2436 useless extension candidates. Maximal degree in co-relation 5450. Up to 786 conditions per place. [2025-02-06 18:53:39,763 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 63 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2025-02-06 18:53:39,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 464 flow [2025-02-06 18:53:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:53:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:53:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-02-06 18:53:39,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2025-02-06 18:53:39,764 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 220 flow. Second operand 5 states and 139 transitions. [2025-02-06 18:53:39,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 464 flow [2025-02-06 18:53:39,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:53:39,767 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 230 flow [2025-02-06 18:53:39,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2025-02-06 18:53:39,767 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2025-02-06 18:53:39,767 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 230 flow [2025-02-06 18:53:39,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:39,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:39,768 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-06 18:53:39,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:53:39,768 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:39,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1317531504, now seen corresponding path program 2 times [2025-02-06 18:53:39,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:39,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309521336] [2025-02-06 18:53:39,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:39,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:39,775 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:53:39,778 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:53:39,778 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:53:39,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:39,807 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:53:39,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:39,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309521336] [2025-02-06 18:53:39,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309521336] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:39,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872027534] [2025-02-06 18:53:39,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:39,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:39,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:39,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:39,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:53:39,860 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:53:39,867 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:53:39,867 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:53:39,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:39,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:53:39,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:53:39,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:53:39,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872027534] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:39,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:39,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-06 18:53:39,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931583045] [2025-02-06 18:53:39,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:39,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:53:39,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:39,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:53:39,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:53:39,915 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-02-06 18:53:39,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:39,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:39,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-02-06 18:53:39,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:40,045 INFO L124 PetriNetUnfolderBase]: 1059/1875 cut-off events. [2025-02-06 18:53:40,046 INFO L125 PetriNetUnfolderBase]: For 789/1046 co-relation queries the response was YES. [2025-02-06 18:53:40,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4472 conditions, 1875 events. 1059/1875 cut-off events. For 789/1046 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10595 event pairs, 724 based on Foata normal form. 92/1904 useless extension candidates. Maximal degree in co-relation 4446. Up to 1460 conditions per place. [2025-02-06 18:53:40,057 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2025-02-06 18:53:40,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 56 transitions, 298 flow [2025-02-06 18:53:40,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:40,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-02-06 18:53:40,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2025-02-06 18:53:40,058 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 230 flow. Second operand 4 states and 101 transitions. [2025-02-06 18:53:40,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 56 transitions, 298 flow [2025-02-06 18:53:40,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 272 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-02-06 18:53:40,062 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 224 flow [2025-02-06 18:53:40,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2025-02-06 18:53:40,063 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2025-02-06 18:53:40,063 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 224 flow [2025-02-06 18:53:40,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:40,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:40,063 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:40,071 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 [2025-02-06 18:53:40,268 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 [2025-02-06 18:53:40,268 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:40,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:40,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2037216599, now seen corresponding path program 1 times [2025-02-06 18:53:40,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:40,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238423541] [2025-02-06 18:53:40,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:40,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:40,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:53:40,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:53:40,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:40,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:40,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:40,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238423541] [2025-02-06 18:53:40,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238423541] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:40,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789838571] [2025-02-06 18:53:40,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:40,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:40,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:40,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:40,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:53:40,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:53:40,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:53:40,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:40,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:40,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:53:40,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:53:40,489 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:53:40,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789838571] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:40,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:53:40,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2025-02-06 18:53:40,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565748333] [2025-02-06 18:53:40,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:40,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:53:40,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:40,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:53:40,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:53:40,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-02-06 18:53:40,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:40,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:40,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-02-06 18:53:40,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:40,711 INFO L124 PetriNetUnfolderBase]: 1792/2636 cut-off events. [2025-02-06 18:53:40,711 INFO L125 PetriNetUnfolderBase]: For 1052/1528 co-relation queries the response was YES. [2025-02-06 18:53:40,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6271 conditions, 2636 events. 1792/2636 cut-off events. For 1052/1528 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12697 event pairs, 556 based on Foata normal form. 166/2596 useless extension candidates. Maximal degree in co-relation 6195. Up to 1162 conditions per place. [2025-02-06 18:53:40,723 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 60 selfloop transitions, 10 changer transitions 3/87 dead transitions. [2025-02-06 18:53:40,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 476 flow [2025-02-06 18:53:40,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:53:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:53:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2025-02-06 18:53:40,724 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2025-02-06 18:53:40,724 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 224 flow. Second operand 6 states and 153 transitions. [2025-02-06 18:53:40,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 476 flow [2025-02-06 18:53:40,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 446 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:53:40,726 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 229 flow [2025-02-06 18:53:40,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2025-02-06 18:53:40,727 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2025-02-06 18:53:40,727 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 229 flow [2025-02-06 18:53:40,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:40,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:40,728 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:40,734 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 [2025-02-06 18:53:40,928 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 [2025-02-06 18:53:40,928 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:40,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:40,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1382121187, now seen corresponding path program 1 times [2025-02-06 18:53:40,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:40,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454711755] [2025-02-06 18:53:40,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:40,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:40,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:53:40,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:53:40,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:40,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:53:41,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:41,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454711755] [2025-02-06 18:53:41,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454711755] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:41,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100554741] [2025-02-06 18:53:41,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:41,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:41,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:41,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:41,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:53:41,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:53:41,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:53:41,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:41,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:41,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:53:41,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:41,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:41,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100554741] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:41,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:41,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-02-06 18:53:41,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427746931] [2025-02-06 18:53:41,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:41,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:53:41,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:41,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:53:41,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:53:41,383 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2025-02-06 18:53:41,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 229 flow. Second operand has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:41,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:41,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2025-02-06 18:53:41,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:42,212 INFO L124 PetriNetUnfolderBase]: 3699/5784 cut-off events. [2025-02-06 18:53:42,212 INFO L125 PetriNetUnfolderBase]: For 4006/4653 co-relation queries the response was YES. [2025-02-06 18:53:42,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15224 conditions, 5784 events. 3699/5784 cut-off events. For 4006/4653 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 34093 event pairs, 618 based on Foata normal form. 329/5978 useless extension candidates. Maximal degree in co-relation 8938. Up to 860 conditions per place. [2025-02-06 18:53:42,239 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 153 selfloop transitions, 23 changer transitions 6/194 dead transitions. [2025-02-06 18:53:42,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 194 transitions, 1089 flow [2025-02-06 18:53:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:53:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:53:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 361 transitions. [2025-02-06 18:53:42,241 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5486322188449848 [2025-02-06 18:53:42,241 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 229 flow. Second operand 14 states and 361 transitions. [2025-02-06 18:53:42,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 194 transitions, 1089 flow [2025-02-06 18:53:42,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 194 transitions, 1073 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:53:42,249 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 289 flow [2025-02-06 18:53:42,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=289, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2025-02-06 18:53:42,249 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 25 predicate places. [2025-02-06 18:53:42,249 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 289 flow [2025-02-06 18:53:42,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:42,250 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:42,250 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:42,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 18:53:42,450 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 [2025-02-06 18:53:42,451 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:42,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:42,451 INFO L85 PathProgramCache]: Analyzing trace with hash -235018202, now seen corresponding path program 1 times [2025-02-06 18:53:42,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:42,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097716338] [2025-02-06 18:53:42,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:42,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:42,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:53:42,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:53:42,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:42,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:53:42,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:42,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097716338] [2025-02-06 18:53:42,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097716338] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:42,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363231488] [2025-02-06 18:53:42,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:42,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:42,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:42,562 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:42,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:53:42,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:53:42,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:53:42,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:42,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:42,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 18:53:42,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:42,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:53:42,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:53:42,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363231488] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:42,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:42,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2025-02-06 18:53:42,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076585305] [2025-02-06 18:53:42,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:42,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 18:53:42,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:42,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 18:53:42,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-02-06 18:53:42,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-02-06 18:53:42,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 289 flow. Second operand has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:42,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:42,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-02-06 18:53:42,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:43,180 INFO L124 PetriNetUnfolderBase]: 2386/3961 cut-off events. [2025-02-06 18:53:43,180 INFO L125 PetriNetUnfolderBase]: For 3685/3867 co-relation queries the response was YES. [2025-02-06 18:53:43,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10957 conditions, 3961 events. 2386/3961 cut-off events. For 3685/3867 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 23090 event pairs, 1665 based on Foata normal form. 70/3933 useless extension candidates. Maximal degree in co-relation 8715. Up to 2667 conditions per place. [2025-02-06 18:53:43,195 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 29 selfloop transitions, 10 changer transitions 35/89 dead transitions. [2025-02-06 18:53:43,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 547 flow [2025-02-06 18:53:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:53:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:53:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2025-02-06 18:53:43,196 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2025-02-06 18:53:43,196 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 289 flow. Second operand 8 states and 203 transitions. [2025-02-06 18:53:43,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 547 flow [2025-02-06 18:53:43,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 503 flow, removed 4 selfloop flow, removed 7 redundant places. [2025-02-06 18:53:43,201 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 247 flow [2025-02-06 18:53:43,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=247, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2025-02-06 18:53:43,201 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2025-02-06 18:53:43,201 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 247 flow [2025-02-06 18:53:43,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:43,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:43,202 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:43,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 18:53:43,402 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,SelfDestructingSolverStorable10 [2025-02-06 18:53:43,403 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:43,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:43,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1681239256, now seen corresponding path program 1 times [2025-02-06 18:53:43,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:43,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627006396] [2025-02-06 18:53:43,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:43,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:43,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:53:43,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:53:43,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:43,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:53:43,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:43,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627006396] [2025-02-06 18:53:43,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627006396] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:43,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925297065] [2025-02-06 18:53:43,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:43,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:43,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:43,454 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:43,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 18:53:43,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:53:43,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:53:43,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:43,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:43,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:53:43,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:53:43,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:53:43,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925297065] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:43,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:43,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:53:43,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49464005] [2025-02-06 18:53:43,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:43,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:53:43,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:43,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:53:43,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:53:43,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-02-06 18:53:43,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 247 flow. Second operand has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:43,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:43,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-02-06 18:53:43,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:44,136 INFO L124 PetriNetUnfolderBase]: 4140/6580 cut-off events. [2025-02-06 18:53:44,136 INFO L125 PetriNetUnfolderBase]: For 5606/6729 co-relation queries the response was YES. [2025-02-06 18:53:44,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17848 conditions, 6580 events. 4140/6580 cut-off events. For 5606/6729 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 37356 event pairs, 847 based on Foata normal form. 543/7100 useless extension candidates. Maximal degree in co-relation 17773. Up to 2278 conditions per place. [2025-02-06 18:53:44,165 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 169 selfloop transitions, 13 changer transitions 0/195 dead transitions. [2025-02-06 18:53:44,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 195 transitions, 1149 flow [2025-02-06 18:53:44,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:53:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:53:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2025-02-06 18:53:44,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6978723404255319 [2025-02-06 18:53:44,167 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 247 flow. Second operand 10 states and 328 transitions. [2025-02-06 18:53:44,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 195 transitions, 1149 flow [2025-02-06 18:53:44,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 195 transitions, 1089 flow, removed 20 selfloop flow, removed 8 redundant places. [2025-02-06 18:53:44,177 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 305 flow [2025-02-06 18:53:44,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=305, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2025-02-06 18:53:44,179 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2025-02-06 18:53:44,180 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 305 flow [2025-02-06 18:53:44,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:44,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:44,180 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:44,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 18:53:44,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:44,384 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:44,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:44,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1887404617, now seen corresponding path program 2 times [2025-02-06 18:53:44,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:44,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044687567] [2025-02-06 18:53:44,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:44,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:44,393 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 18:53:44,398 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:53:44,398 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:53:44,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:53:44,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:44,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044687567] [2025-02-06 18:53:44,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044687567] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:53:44,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:53:44,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:53:44,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779818725] [2025-02-06 18:53:44,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:53:44,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:53:44,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:44,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:53:44,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:53:44,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-02-06 18:53:44,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:44,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:44,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-02-06 18:53:44,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:45,096 INFO L124 PetriNetUnfolderBase]: 5013/7373 cut-off events. [2025-02-06 18:53:45,096 INFO L125 PetriNetUnfolderBase]: For 9052/9548 co-relation queries the response was YES. [2025-02-06 18:53:45,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22105 conditions, 7373 events. 5013/7373 cut-off events. For 9052/9548 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 40358 event pairs, 573 based on Foata normal form. 166/7347 useless extension candidates. Maximal degree in co-relation 22036. Up to 2995 conditions per place. [2025-02-06 18:53:45,141 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 83 selfloop transitions, 7 changer transitions 0/104 dead transitions. [2025-02-06 18:53:45,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 104 transitions, 707 flow [2025-02-06 18:53:45,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:53:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:53:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2025-02-06 18:53:45,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6329787234042553 [2025-02-06 18:53:45,142 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 305 flow. Second operand 4 states and 119 transitions. [2025-02-06 18:53:45,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 104 transitions, 707 flow [2025-02-06 18:53:45,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 678 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-06 18:53:45,156 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 304 flow [2025-02-06 18:53:45,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2025-02-06 18:53:45,156 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2025-02-06 18:53:45,156 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 304 flow [2025-02-06 18:53:45,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:45,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:45,157 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:45,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:53:45,157 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:45,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1619999374, now seen corresponding path program 1 times [2025-02-06 18:53:45,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:45,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400860130] [2025-02-06 18:53:45,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:45,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:53:45,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:53:45,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:45,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:53:45,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:45,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400860130] [2025-02-06 18:53:45,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400860130] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:45,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400160607] [2025-02-06 18:53:45,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:53:45,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:45,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:45,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:45,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 18:53:45,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:53:45,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:53:45,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:53:45,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:45,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 18:53:45,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:45,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:45,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:53:45,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400160607] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:45,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:45,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2025-02-06 18:53:45,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396493627] [2025-02-06 18:53:45,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:45,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 18:53:45,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:45,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 18:53:45,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2025-02-06 18:53:45,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2025-02-06 18:53:45,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 304 flow. Second operand has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:45,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:45,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2025-02-06 18:53:45,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:47,033 INFO L124 PetriNetUnfolderBase]: 10457/15560 cut-off events. [2025-02-06 18:53:47,033 INFO L125 PetriNetUnfolderBase]: For 19913/20985 co-relation queries the response was YES. [2025-02-06 18:53:47,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47782 conditions, 15560 events. 10457/15560 cut-off events. For 19913/20985 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 96729 event pairs, 2987 based on Foata normal form. 360/15807 useless extension candidates. Maximal degree in co-relation 38744. Up to 4258 conditions per place. [2025-02-06 18:53:47,101 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 222 selfloop transitions, 23 changer transitions 9/268 dead transitions. [2025-02-06 18:53:47,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 268 transitions, 1818 flow [2025-02-06 18:53:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:53:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:53:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 418 transitions. [2025-02-06 18:53:47,103 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.523153942428035 [2025-02-06 18:53:47,103 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 304 flow. Second operand 17 states and 418 transitions. [2025-02-06 18:53:47,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 268 transitions, 1818 flow [2025-02-06 18:53:47,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 268 transitions, 1788 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:53:47,138 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 387 flow [2025-02-06 18:53:47,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=387, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2025-02-06 18:53:47,138 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 42 predicate places. [2025-02-06 18:53:47,139 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 387 flow [2025-02-06 18:53:47,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:47,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:47,139 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:47,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 18:53:47,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:47,340 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:47,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash 886282977, now seen corresponding path program 2 times [2025-02-06 18:53:47,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:47,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366318073] [2025-02-06 18:53:47,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:47,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:47,347 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 18:53:47,350 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:53:47,351 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:53:47,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-06 18:53:47,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:47,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366318073] [2025-02-06 18:53:47,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366318073] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:47,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438143581] [2025-02-06 18:53:47,405 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:47,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:47,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:47,408 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:53:47,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 18:53:47,453 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 18:53:47,467 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:53:47,467 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:53:47,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:47,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:53:47,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-06 18:53:47,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-06 18:53:47,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438143581] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:47,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:47,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2025-02-06 18:53:47,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279957832] [2025-02-06 18:53:47,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:47,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:53:47,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:47,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:53:47,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:53:47,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-02-06 18:53:47,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 387 flow. Second operand has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:47,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:47,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-02-06 18:53:47,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:48,684 INFO L124 PetriNetUnfolderBase]: 10364/15505 cut-off events. [2025-02-06 18:53:48,684 INFO L125 PetriNetUnfolderBase]: For 20283/21552 co-relation queries the response was YES. [2025-02-06 18:53:48,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48366 conditions, 15505 events. 10364/15505 cut-off events. For 20283/21552 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 95894 event pairs, 1783 based on Foata normal form. 253/15711 useless extension candidates. Maximal degree in co-relation 39337. Up to 6270 conditions per place. [2025-02-06 18:53:48,762 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 96 selfloop transitions, 20 changer transitions 3/133 dead transitions. [2025-02-06 18:53:48,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 935 flow [2025-02-06 18:53:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:53:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:53:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2025-02-06 18:53:48,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5562310030395137 [2025-02-06 18:53:48,763 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 387 flow. Second operand 7 states and 183 transitions. [2025-02-06 18:53:48,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 935 flow [2025-02-06 18:53:48,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 133 transitions, 900 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-02-06 18:53:48,805 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 400 flow [2025-02-06 18:53:48,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2025-02-06 18:53:48,805 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 40 predicate places. [2025-02-06 18:53:48,806 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 400 flow [2025-02-06 18:53:48,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:48,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:53:48,806 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:53:48,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 18:53:49,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:49,006 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-06 18:53:49,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:53:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash 705623759, now seen corresponding path program 2 times [2025-02-06 18:53:49,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:53:49,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878415657] [2025-02-06 18:53:49,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:49,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:53:49,016 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 18:53:49,024 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 18:53:49,025 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:53:49,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-06 18:53:49,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:53:49,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878415657] [2025-02-06 18:53:49,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878415657] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:53:49,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110155884] [2025-02-06 18:53:49,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:53:49,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:53:49,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:53:49,085 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) [2025-02-06 18:53:49,091 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 [2025-02-06 18:53:49,129 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 18:53:49,143 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 18:53:49,143 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:53:49,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:53:49,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:53:49,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:53:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-06 18:53:49,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:53:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-06 18:53:49,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110155884] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:53:49,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:53:49,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-06 18:53:49,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000231733] [2025-02-06 18:53:49,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:53:49,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:53:49,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:53:49,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:53:49,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:53:49,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-02-06 18:53:49,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:49,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:53:49,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-02-06 18:53:49,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:53:50,433 INFO L124 PetriNetUnfolderBase]: 11128/17573 cut-off events. [2025-02-06 18:53:50,433 INFO L125 PetriNetUnfolderBase]: For 33128/34557 co-relation queries the response was YES. [2025-02-06 18:53:50,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55737 conditions, 17573 events. 11128/17573 cut-off events. For 33128/34557 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 113994 event pairs, 2816 based on Foata normal form. 977/18449 useless extension candidates. Maximal degree in co-relation 42982. Up to 6822 conditions per place. [2025-02-06 18:53:50,474 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2025-02-06 18:53:50,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 114 transitions, 844 flow [2025-02-06 18:53:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:53:50,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:53:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-02-06 18:53:50,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2025-02-06 18:53:50,476 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 400 flow. Second operand 5 states and 139 transitions. [2025-02-06 18:53:50,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 114 transitions, 844 flow [2025-02-06 18:53:50,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 114 transitions, 764 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-02-06 18:53:50,531 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2025-02-06 18:53:50,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2025-02-06 18:53:50,531 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 34 predicate places. [2025-02-06 18:53:50,531 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2025-02-06 18:53:50,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:53:50,533 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-02-06 18:53:50,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-02-06 18:53:50,540 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 [2025-02-06 18:53:50,735 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,SelfDestructingSolverStorable15 [2025-02-06 18:53:50,735 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:53:50,740 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 18:53:50,740 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 18:53:50,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 06:53:50 BasicIcfg [2025-02-06 18:53:50,744 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 18:53:50,745 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 18:53:50,745 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 18:53:50,745 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 18:53:50,745 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:53:36" (3/4) ... [2025-02-06 18:53:50,747 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 18:53:50,749 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-06 18:53:50,749 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-06 18:53:50,749 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-02-06 18:53:50,752 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 68 nodes and edges [2025-02-06 18:53:50,752 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2025-02-06 18:53:50,752 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2025-02-06 18:53:50,752 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-06 18:53:50,808 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 18:53:50,808 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 18:53:50,808 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 18:53:50,809 INFO L158 Benchmark]: Toolchain (without parser) took 14864.26ms. Allocated memory was 167.8MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 132.7MB in the beginning and 558.7MB in the end (delta: -426.0MB). Peak memory consumption was 542.2MB. Max. memory is 16.1GB. [2025-02-06 18:53:50,809 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 226.5MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:53:50,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.51ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 120.5MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:53:50,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.72ms. Allocated memory is still 167.8MB. Free memory was 120.5MB in the beginning and 119.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:53:50,811 INFO L158 Benchmark]: Boogie Preprocessor took 28.04ms. Allocated memory is still 167.8MB. Free memory was 119.5MB in the beginning and 117.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:53:50,811 INFO L158 Benchmark]: IcfgBuilder took 569.90ms. Allocated memory is still 167.8MB. Free memory was 117.3MB in the beginning and 79.3MB in the end (delta: 38.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-06 18:53:50,811 INFO L158 Benchmark]: TraceAbstraction took 14021.35ms. Allocated memory was 167.8MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 78.8MB in the beginning and 564.8MB in the end (delta: -486.0MB). Peak memory consumption was 936.5MB. Max. memory is 16.1GB. [2025-02-06 18:53:50,812 INFO L158 Benchmark]: Witness Printer took 63.22ms. Allocated memory is still 1.1GB. Free memory was 564.8MB in the beginning and 558.7MB in the end (delta: 6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:53:50,813 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 226.5MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.51ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 120.5MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.72ms. Allocated memory is still 167.8MB. Free memory was 120.5MB in the beginning and 119.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.04ms. Allocated memory is still 167.8MB. Free memory was 119.5MB in the beginning and 117.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 569.90ms. Allocated memory is still 167.8MB. Free memory was 117.3MB in the beginning and 79.3MB in the end (delta: 38.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 14021.35ms. Allocated memory was 167.8MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 78.8MB in the beginning and 564.8MB in the end (delta: -486.0MB). Peak memory consumption was 936.5MB. Max. memory is 16.1GB. * Witness Printer took 63.22ms. Allocated memory is still 1.1GB. Free memory was 564.8MB in the beginning and 558.7MB in the end (delta: 6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 74 locations, 17 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: 13.9s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1431 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1345 mSDsluCounter, 885 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 858 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4780 IncrementalHoareTripleChecker+Invalid, 4827 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 27 mSDtfsCounter, 4780 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 276 SyntacticMatches, 7 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=15, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 441 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 571 ConstructedInterpolants, 0 QuantifiedInterpolants, 1799 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1116 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 34 InterpolantComputations, 8 PerfectInterpolantSequences, 346/493 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 18:53:50,836 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