./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:10:55,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:10:55,471 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:10:55,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:10:55,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:10:55,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:10:55,508 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:10:55,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:10:55,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:10:55,508 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:10:55,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:10:55,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:10:55,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:10:55,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:10:55,509 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:10:55,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:10:55,510 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:10:55,511 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:10:55,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:10:55,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:10:55,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:10:55,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:55,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:10:55,511 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:10:55,511 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:10:55,511 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:10:55,511 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:10:55,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:10:55,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:10:55,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:10:55,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:10:55,514 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:10:55,514 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 -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2025-02-08 14:10:55,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:10:55,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:10:55,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:10:55,789 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:10:55,789 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:10:55,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2025-02-08 14:10:57,026 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9c459b596/36b3d926e98248c7ab7478b663eecf14/FLAG5a9fe5b0d [2025-02-08 14:10:57,296 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:10:57,297 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2025-02-08 14:10:57,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9c459b596/36b3d926e98248c7ab7478b663eecf14/FLAG5a9fe5b0d [2025-02-08 14:10:57,596 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9c459b596/36b3d926e98248c7ab7478b663eecf14 [2025-02-08 14:10:57,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:10:57,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:10:57,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:57,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:10:57,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:10:57,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c2aa76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57, skipping insertion in model container [2025-02-08 14:10:57,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,628 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:10:57,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:57,812 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:10:57,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:57,863 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:10:57,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57 WrapperNode [2025-02-08 14:10:57,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:57,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:57,867 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:10:57,867 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:10:57,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,906 INFO L138 Inliner]: procedures = 24, calls = 54, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 349 [2025-02-08 14:10:57,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:57,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:10:57,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:10:57,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:10:57,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,955 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-08 14:10:57,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,968 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,975 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:10:57,981 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:10:57,984 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:10:57,984 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:10:57,985 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:58,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:58,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:10:58,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:10:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:10:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:10:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:10:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:10:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:10:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:10:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:10:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:10:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:10:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:10:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:10:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:10:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:10:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:10:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:10:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:10:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:10:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:10:58,047 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:10:58,166 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:10:58,168 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:10:58,671 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:10:58,671 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:10:59,053 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:10:59,054 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:10:59,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:59 BoogieIcfgContainer [2025-02-08 14:10:59,055 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:10:59,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:10:59,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:10:59,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:10:59,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:10:57" (1/3) ... [2025-02-08 14:10:59,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e55ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:59, skipping insertion in model container [2025-02-08 14:10:59,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (2/3) ... [2025-02-08 14:10:59,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e55ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:59, skipping insertion in model container [2025-02-08 14:10:59,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:59" (3/3) ... [2025-02-08 14:10:59,064 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2025-02-08 14:10:59,080 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:10:59,081 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-commit-1.wvr-bad.c that has 4 procedures, 71 locations, 1 initial locations, 6 loop locations, and 22 error locations. [2025-02-08 14:10:59,082 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:10:59,162 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:10:59,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 87 transitions, 195 flow [2025-02-08 14:10:59,242 INFO L124 PetriNetUnfolderBase]: 17/84 cut-off events. [2025-02-08 14:10:59,246 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 14:10:59,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 17/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 254 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 67. Up to 6 conditions per place. [2025-02-08 14:10:59,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 87 transitions, 195 flow [2025-02-08 14:10:59,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 82 transitions, 179 flow [2025-02-08 14:10:59,269 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:10:59,281 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;@104cc41f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:10:59,281 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-02-08 14:10:59,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:10:59,285 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:10:59,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:10:59,285 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:59,286 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:10:59,286 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:10:59,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:59,290 INFO L85 PathProgramCache]: Analyzing trace with hash 945577, now seen corresponding path program 1 times [2025-02-08 14:10:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:59,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098007732] [2025-02-08 14:10:59,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:59,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:59,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:10:59,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:10:59,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:59,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:59,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:59,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098007732] [2025-02-08 14:10:59,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098007732] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:59,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:10:59,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:10:59,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13096312] [2025-02-08 14:10:59,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:59,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:10:59,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:59,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:10:59,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:10:59,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2025-02-08 14:10:59,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:59,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:59,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2025-02-08 14:10:59,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:00,328 INFO L124 PetriNetUnfolderBase]: 3370/4957 cut-off events. [2025-02-08 14:11:00,329 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2025-02-08 14:11:00,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9479 conditions, 4957 events. 3370/4957 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 27937 event pairs, 2182 based on Foata normal form. 3/3096 useless extension candidates. Maximal degree in co-relation 9006. Up to 4308 conditions per place. [2025-02-08 14:11:00,386 INFO L140 encePairwiseOnDemand]: 60/87 looper letters, 51 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2025-02-08 14:11:00,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 297 flow [2025-02-08 14:11:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:00,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2025-02-08 14:11:00,398 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2025-02-08 14:11:00,401 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 179 flow. Second operand 4 states and 166 transitions. [2025-02-08 14:11:00,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 297 flow [2025-02-08 14:11:00,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 288 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:11:00,418 INFO L231 Difference]: Finished difference. Result has 68 places, 80 transitions, 236 flow [2025-02-08 14:11:00,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=68, PETRI_TRANSITIONS=80} [2025-02-08 14:11:00,425 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2025-02-08 14:11:00,425 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 80 transitions, 236 flow [2025-02-08 14:11:00,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:00,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:00,425 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:11:00,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:11:00,426 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:00,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:00,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1894226617, now seen corresponding path program 1 times [2025-02-08 14:11:00,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:00,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707168969] [2025-02-08 14:11:00,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:00,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:00,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:11:00,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:11:00,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:00,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:00,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:00,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707168969] [2025-02-08 14:11:00,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707168969] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:00,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170120867] [2025-02-08 14:11:00,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:00,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:00,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:00,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:00,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:11:00,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:11:00,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:11:00,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:00,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:00,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:00,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:00,750 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:11:00,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170120867] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:00,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:11:00,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:11:00,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830992561] [2025-02-08 14:11:00,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:00,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:11:00,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:00,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:11:00,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:11:00,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2025-02-08 14:11:00,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 80 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:00,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:00,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2025-02-08 14:11:00,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:01,432 INFO L124 PetriNetUnfolderBase]: 3370/4954 cut-off events. [2025-02-08 14:11:01,434 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2025-02-08 14:11:01,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9439 conditions, 4954 events. 3370/4954 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 27873 event pairs, 2182 based on Foata normal form. 3/3098 useless extension candidates. Maximal degree in co-relation 9366. Up to 4293 conditions per place. [2025-02-08 14:11:01,479 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 41 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2025-02-08 14:11:01,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 340 flow [2025-02-08 14:11:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:11:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:11:01,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2025-02-08 14:11:01,483 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36973180076628354 [2025-02-08 14:11:01,483 INFO L175 Difference]: Start difference. First operand has 68 places, 80 transitions, 236 flow. Second operand 6 states and 193 transitions. [2025-02-08 14:11:01,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 340 flow [2025-02-08 14:11:01,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:11:01,487 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 258 flow [2025-02-08 14:11:01,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2025-02-08 14:11:01,488 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -5 predicate places. [2025-02-08 14:11:01,489 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 258 flow [2025-02-08 14:11:01,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:01,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:01,490 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:11:01,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:11:01,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:01,691 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:01,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1408517880, now seen corresponding path program 1 times [2025-02-08 14:11:01,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:01,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339068476] [2025-02-08 14:11:01,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:01,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:01,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:01,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:01,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:01,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:01,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:01,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339068476] [2025-02-08 14:11:01,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339068476] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:01,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041486348] [2025-02-08 14:11:01,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:01,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:01,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:01,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:01,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:11:01,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:01,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:01,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:01,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:01,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:01,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:01,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:01,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041486348] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:01,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:01,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:11:01,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275592522] [2025-02-08 14:11:01,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:01,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:11:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:01,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:11:01,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:11:02,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2025-02-08 14:11:02,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 258 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:02,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:02,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2025-02-08 14:11:02,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:02,641 INFO L124 PetriNetUnfolderBase]: 3379/4990 cut-off events. [2025-02-08 14:11:02,641 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2025-02-08 14:11:02,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9580 conditions, 4990 events. 3379/4990 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 28269 event pairs, 2182 based on Foata normal form. 9/3140 useless extension candidates. Maximal degree in co-relation 9368. Up to 4308 conditions per place. [2025-02-08 14:11:02,674 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 48 selfloop transitions, 37 changer transitions 0/104 dead transitions. [2025-02-08 14:11:02,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 602 flow [2025-02-08 14:11:02,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:11:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:11:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2025-02-08 14:11:02,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36091954022988504 [2025-02-08 14:11:02,677 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 258 flow. Second operand 10 states and 314 transitions. [2025-02-08 14:11:02,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 602 flow [2025-02-08 14:11:02,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 519 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-02-08 14:11:02,683 INFO L231 Difference]: Finished difference. Result has 77 places, 104 transitions, 473 flow [2025-02-08 14:11:02,684 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=473, PETRI_PLACES=77, PETRI_TRANSITIONS=104} [2025-02-08 14:11:02,685 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2025-02-08 14:11:02,685 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 104 transitions, 473 flow [2025-02-08 14:11:02,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:02,686 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:02,686 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:02,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:02,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:02,890 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:02,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:02,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2069992788, now seen corresponding path program 1 times [2025-02-08 14:11:02,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:02,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913332549] [2025-02-08 14:11:02,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:02,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:02,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:11:02,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:11:02,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:02,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:03,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:03,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913332549] [2025-02-08 14:11:03,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913332549] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:03,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:03,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:11:03,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929043441] [2025-02-08 14:11:03,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:03,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:03,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:03,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:03,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:03,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2025-02-08 14:11:03,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 104 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:03,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:03,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2025-02-08 14:11:03,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:03,709 INFO L124 PetriNetUnfolderBase]: 5838/8627 cut-off events. [2025-02-08 14:11:03,711 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2025-02-08 14:11:03,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16513 conditions, 8627 events. 5838/8627 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 51902 event pairs, 1884 based on Foata normal form. 214/5774 useless extension candidates. Maximal degree in co-relation 16415. Up to 4473 conditions per place. [2025-02-08 14:11:03,807 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 108 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2025-02-08 14:11:03,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 133 transitions, 757 flow [2025-02-08 14:11:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:03,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2025-02-08 14:11:03,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6245210727969349 [2025-02-08 14:11:03,810 INFO L175 Difference]: Start difference. First operand has 77 places, 104 transitions, 473 flow. Second operand 3 states and 163 transitions. [2025-02-08 14:11:03,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 133 transitions, 757 flow [2025-02-08 14:11:03,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 133 transitions, 720 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:03,815 INFO L231 Difference]: Finished difference. Result has 78 places, 106 transitions, 461 flow [2025-02-08 14:11:03,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=78, PETRI_TRANSITIONS=106} [2025-02-08 14:11:03,816 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2025-02-08 14:11:03,816 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 106 transitions, 461 flow [2025-02-08 14:11:03,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:03,817 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:03,817 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:03,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:11:03,817 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:03,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:03,818 INFO L85 PathProgramCache]: Analyzing trace with hash 254734994, now seen corresponding path program 1 times [2025-02-08 14:11:03,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:03,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611096296] [2025-02-08 14:11:03,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:03,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:03,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:03,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:03,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:03,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611096296] [2025-02-08 14:11:03,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611096296] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:03,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:03,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:03,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170990931] [2025-02-08 14:11:03,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:03,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:03,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:03,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:03,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:03,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2025-02-08 14:11:03,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 106 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2025-02-08 14:11:03,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:03,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2025-02-08 14:11:03,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:04,919 INFO L124 PetriNetUnfolderBase]: 8495/12342 cut-off events. [2025-02-08 14:11:04,920 INFO L125 PetriNetUnfolderBase]: For 953/965 co-relation queries the response was YES. [2025-02-08 14:11:04,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25452 conditions, 12342 events. 8495/12342 cut-off events. For 953/965 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 70255 event pairs, 3181 based on Foata normal form. 0/9349 useless extension candidates. Maximal degree in co-relation 25357. Up to 5816 conditions per place. [2025-02-08 14:11:05,000 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 111 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2025-02-08 14:11:05,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 132 transitions, 751 flow [2025-02-08 14:11:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2025-02-08 14:11:05,003 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2025-02-08 14:11:05,003 INFO L175 Difference]: Start difference. First operand has 78 places, 106 transitions, 461 flow. Second operand 3 states and 147 transitions. [2025-02-08 14:11:05,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 132 transitions, 751 flow [2025-02-08 14:11:05,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 132 transitions, 748 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:05,007 INFO L231 Difference]: Finished difference. Result has 81 places, 107 transitions, 480 flow [2025-02-08 14:11:05,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=81, PETRI_TRANSITIONS=107} [2025-02-08 14:11:05,008 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2025-02-08 14:11:05,008 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 107 transitions, 480 flow [2025-02-08 14:11:05,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2025-02-08 14:11:05,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:05,008 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:05,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:11:05,009 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:05,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1387946467, now seen corresponding path program 1 times [2025-02-08 14:11:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:05,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295419470] [2025-02-08 14:11:05,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:05,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:05,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:11:05,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:11:05,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:05,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:05,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:05,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:05,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295419470] [2025-02-08 14:11:05,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295419470] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:05,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:05,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:05,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057366719] [2025-02-08 14:11:05,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:05,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:05,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:05,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:05,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:05,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2025-02-08 14:11:05,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 107 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:05,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:05,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2025-02-08 14:11:05,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:06,343 INFO L124 PetriNetUnfolderBase]: 10419/15911 cut-off events. [2025-02-08 14:11:06,343 INFO L125 PetriNetUnfolderBase]: For 3354/3462 co-relation queries the response was YES. [2025-02-08 14:11:06,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33888 conditions, 15911 events. 10419/15911 cut-off events. For 3354/3462 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 99555 event pairs, 4177 based on Foata normal form. 315/12544 useless extension candidates. Maximal degree in co-relation 33792. Up to 7196 conditions per place. [2025-02-08 14:11:06,441 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 113 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2025-02-08 14:11:06,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 138 transitions, 796 flow [2025-02-08 14:11:06,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2025-02-08 14:11:06,443 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6245210727969349 [2025-02-08 14:11:06,443 INFO L175 Difference]: Start difference. First operand has 81 places, 107 transitions, 480 flow. Second operand 3 states and 163 transitions. [2025-02-08 14:11:06,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 138 transitions, 796 flow [2025-02-08 14:11:06,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 138 transitions, 784 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:06,451 INFO L231 Difference]: Finished difference. Result has 82 places, 108 transitions, 486 flow [2025-02-08 14:11:06,451 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=82, PETRI_TRANSITIONS=108} [2025-02-08 14:11:06,452 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2025-02-08 14:11:06,452 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 108 transitions, 486 flow [2025-02-08 14:11:06,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:06,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:06,453 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:06,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:11:06,454 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:06,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:06,454 INFO L85 PathProgramCache]: Analyzing trace with hash -76665510, now seen corresponding path program 1 times [2025-02-08 14:11:06,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:06,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060742435] [2025-02-08 14:11:06,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:06,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:06,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:11:06,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:11:06,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:06,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:06,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060742435] [2025-02-08 14:11:06,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060742435] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:06,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:06,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:06,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831667300] [2025-02-08 14:11:06,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:06,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:06,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:06,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:06,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:06,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 87 [2025-02-08 14:11:06,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 108 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:06,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:06,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 87 [2025-02-08 14:11:06,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:07,844 INFO L124 PetriNetUnfolderBase]: 14063/20642 cut-off events. [2025-02-08 14:11:07,845 INFO L125 PetriNetUnfolderBase]: For 3137/3361 co-relation queries the response was YES. [2025-02-08 14:11:07,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43484 conditions, 20642 events. 14063/20642 cut-off events. For 3137/3361 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 124304 event pairs, 6937 based on Foata normal form. 0/16000 useless extension candidates. Maximal degree in co-relation 43387. Up to 12185 conditions per place. [2025-02-08 14:11:07,944 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 111 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2025-02-08 14:11:07,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 786 flow [2025-02-08 14:11:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:07,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2025-02-08 14:11:07,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2025-02-08 14:11:07,945 INFO L175 Difference]: Start difference. First operand has 82 places, 108 transitions, 486 flow. Second operand 3 states and 153 transitions. [2025-02-08 14:11:07,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 786 flow [2025-02-08 14:11:07,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 135 transitions, 784 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:07,951 INFO L231 Difference]: Finished difference. Result has 85 places, 108 transitions, 502 flow [2025-02-08 14:11:07,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=502, PETRI_PLACES=85, PETRI_TRANSITIONS=108} [2025-02-08 14:11:07,955 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2025-02-08 14:11:07,956 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 108 transitions, 502 flow [2025-02-08 14:11:07,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:07,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:07,957 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:07,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:11:07,957 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:07,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash 717142474, now seen corresponding path program 1 times [2025-02-08 14:11:07,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:07,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935751787] [2025-02-08 14:11:07,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:07,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:11:07,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:11:07,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:07,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:08,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:08,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935751787] [2025-02-08 14:11:08,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935751787] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:08,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:08,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:08,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879492474] [2025-02-08 14:11:08,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:08,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:08,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:08,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:08,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2025-02-08 14:11:08,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 108 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:08,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:08,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2025-02-08 14:11:08,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:09,330 INFO L124 PetriNetUnfolderBase]: 12513/19151 cut-off events. [2025-02-08 14:11:09,330 INFO L125 PetriNetUnfolderBase]: For 6019/6411 co-relation queries the response was YES. [2025-02-08 14:11:09,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41688 conditions, 19151 events. 12513/19151 cut-off events. For 6019/6411 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 120325 event pairs, 9361 based on Foata normal form. 112/14998 useless extension candidates. Maximal degree in co-relation 41533. Up to 15248 conditions per place. [2025-02-08 14:11:09,440 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 131 selfloop transitions, 3 changer transitions 2/160 dead transitions. [2025-02-08 14:11:09,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 160 transitions, 1013 flow [2025-02-08 14:11:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:09,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2025-02-08 14:11:09,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5488505747126436 [2025-02-08 14:11:09,442 INFO L175 Difference]: Start difference. First operand has 85 places, 108 transitions, 502 flow. Second operand 4 states and 191 transitions. [2025-02-08 14:11:09,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 160 transitions, 1013 flow [2025-02-08 14:11:09,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 160 transitions, 1005 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:09,453 INFO L231 Difference]: Finished difference. Result has 87 places, 108 transitions, 505 flow [2025-02-08 14:11:09,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=87, PETRI_TRANSITIONS=108} [2025-02-08 14:11:09,454 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 12 predicate places. [2025-02-08 14:11:09,454 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 108 transitions, 505 flow [2025-02-08 14:11:09,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:09,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:09,455 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:09,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:11:09,455 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:09,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:09,455 INFO L85 PathProgramCache]: Analyzing trace with hash 756582236, now seen corresponding path program 1 times [2025-02-08 14:11:09,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:09,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001289001] [2025-02-08 14:11:09,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:09,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:09,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:11:09,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:11:09,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:09,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:09,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:09,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001289001] [2025-02-08 14:11:09,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001289001] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:09,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:09,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:09,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886946314] [2025-02-08 14:11:09,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:09,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:09,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:09,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:09,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:09,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 87 [2025-02-08 14:11:09,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 108 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:09,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:09,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 87 [2025-02-08 14:11:09,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:11,607 INFO L124 PetriNetUnfolderBase]: 23803/34699 cut-off events. [2025-02-08 14:11:11,608 INFO L125 PetriNetUnfolderBase]: For 9699/10513 co-relation queries the response was YES. [2025-02-08 14:11:11,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76593 conditions, 34699 events. 23803/34699 cut-off events. For 9699/10513 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 216510 event pairs, 13589 based on Foata normal form. 0/26669 useless extension candidates. Maximal degree in co-relation 76437. Up to 16287 conditions per place. [2025-02-08 14:11:11,989 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 111 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2025-02-08 14:11:11,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 137 transitions, 823 flow [2025-02-08 14:11:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:11,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2025-02-08 14:11:11,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2025-02-08 14:11:11,990 INFO L175 Difference]: Start difference. First operand has 87 places, 108 transitions, 505 flow. Second operand 3 states and 153 transitions. [2025-02-08 14:11:11,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 137 transitions, 823 flow [2025-02-08 14:11:11,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 137 transitions, 819 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:12,001 INFO L231 Difference]: Finished difference. Result has 90 places, 109 transitions, 527 flow [2025-02-08 14:11:12,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=527, PETRI_PLACES=90, PETRI_TRANSITIONS=109} [2025-02-08 14:11:12,002 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 15 predicate places. [2025-02-08 14:11:12,002 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 109 transitions, 527 flow [2025-02-08 14:11:12,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:12,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:12,003 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:11:12,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:11:12,003 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:12,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:12,003 INFO L85 PathProgramCache]: Analyzing trace with hash 23110742, now seen corresponding path program 2 times [2025-02-08 14:11:12,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:12,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230297052] [2025-02-08 14:11:12,004 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:12,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:12,012 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:11:12,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:11:12,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:12,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:12,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:12,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230297052] [2025-02-08 14:11:12,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230297052] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:12,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560968139] [2025-02-08 14:11:12,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:12,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:12,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:12,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:12,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:11:12,116 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:11:12,128 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:11:12,128 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:12,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:12,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:11:12,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:12,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:12,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:12,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560968139] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:12,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:12,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:11:12,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529830670] [2025-02-08 14:11:12,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:12,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:12,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:12,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:12,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:12,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2025-02-08 14:11:12,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 109 transitions, 527 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:12,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:12,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2025-02-08 14:11:12,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:14,059 INFO L124 PetriNetUnfolderBase]: 18815/28866 cut-off events. [2025-02-08 14:11:14,059 INFO L125 PetriNetUnfolderBase]: For 12408/13526 co-relation queries the response was YES. [2025-02-08 14:11:14,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65261 conditions, 28866 events. 18815/28866 cut-off events. For 12408/13526 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 196811 event pairs, 15031 based on Foata normal form. 5/22943 useless extension candidates. Maximal degree in co-relation 65129. Up to 24910 conditions per place. [2025-02-08 14:11:14,196 INFO L140 encePairwiseOnDemand]: 76/87 looper letters, 47 selfloop transitions, 36 changer transitions 1/106 dead transitions. [2025-02-08 14:11:14,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 665 flow [2025-02-08 14:11:14,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2025-02-08 14:11:14,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3936781609195402 [2025-02-08 14:11:14,198 INFO L175 Difference]: Start difference. First operand has 90 places, 109 transitions, 527 flow. Second operand 4 states and 137 transitions. [2025-02-08 14:11:14,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 665 flow [2025-02-08 14:11:14,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 625 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-08 14:11:14,211 INFO L231 Difference]: Finished difference. Result has 84 places, 105 transitions, 524 flow [2025-02-08 14:11:14,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=524, PETRI_PLACES=84, PETRI_TRANSITIONS=105} [2025-02-08 14:11:14,212 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2025-02-08 14:11:14,212 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 105 transitions, 524 flow [2025-02-08 14:11:14,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:14,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:14,213 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:14,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 14:11:14,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:14,414 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:14,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash -802798616, now seen corresponding path program 1 times [2025-02-08 14:11:14,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:14,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026342045] [2025-02-08 14:11:14,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:14,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:14,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:11:14,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:11:14,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:14,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:14,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:14,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026342045] [2025-02-08 14:11:14,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026342045] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:14,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036557513] [2025-02-08 14:11:14,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:14,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:14,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:14,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:14,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 14:11:14,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:11:14,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:11:14,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:14,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:14,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:11:14,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:14,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:11:14,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036557513] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:14,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:11:14,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-02-08 14:11:14,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306305524] [2025-02-08 14:11:14,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:14,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:14,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:14,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:14,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:11:14,718 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2025-02-08 14:11:14,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 105 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:14,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:14,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2025-02-08 14:11:14,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:16,182 INFO L124 PetriNetUnfolderBase]: 13824/21468 cut-off events. [2025-02-08 14:11:16,183 INFO L125 PetriNetUnfolderBase]: For 7734/8646 co-relation queries the response was YES. [2025-02-08 14:11:16,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46820 conditions, 21468 events. 13824/21468 cut-off events. For 7734/8646 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 143225 event pairs, 10758 based on Foata normal form. 1221/18133 useless extension candidates. Maximal degree in co-relation 46582. Up to 18121 conditions per place. [2025-02-08 14:11:16,313 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 78 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2025-02-08 14:11:16,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 101 transitions, 668 flow [2025-02-08 14:11:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:16,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2025-02-08 14:11:16,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49808429118773945 [2025-02-08 14:11:16,315 INFO L175 Difference]: Start difference. First operand has 84 places, 105 transitions, 524 flow. Second operand 3 states and 130 transitions. [2025-02-08 14:11:16,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 101 transitions, 668 flow [2025-02-08 14:11:16,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 101 transitions, 594 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 14:11:16,322 INFO L231 Difference]: Finished difference. Result has 77 places, 101 transitions, 438 flow [2025-02-08 14:11:16,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=77, PETRI_TRANSITIONS=101} [2025-02-08 14:11:16,323 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2025-02-08 14:11:16,323 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 101 transitions, 438 flow [2025-02-08 14:11:16,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:16,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:16,323 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:16,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 14:11:16,524 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,SelfDestructingSolverStorable10 [2025-02-08 14:11:16,524 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:16,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:16,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1913257848, now seen corresponding path program 1 times [2025-02-08 14:11:16,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:16,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460950550] [2025-02-08 14:11:16,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:16,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:16,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:11:16,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:11:16,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:16,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 14:11:16,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:16,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460950550] [2025-02-08 14:11:16,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460950550] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:16,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:16,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637613219] [2025-02-08 14:11:16,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:16,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:16,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:16,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:16,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:16,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2025-02-08 14:11:16,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 101 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2025-02-08 14:11:16,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:16,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2025-02-08 14:11:16,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:18,031 INFO L124 PetriNetUnfolderBase]: 18120/27226 cut-off events. [2025-02-08 14:11:18,031 INFO L125 PetriNetUnfolderBase]: For 10308/12126 co-relation queries the response was YES. [2025-02-08 14:11:18,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61148 conditions, 27226 events. 18120/27226 cut-off events. For 10308/12126 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 170872 event pairs, 6045 based on Foata normal form. 566/22681 useless extension candidates. Maximal degree in co-relation 61128. Up to 17545 conditions per place. [2025-02-08 14:11:18,193 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 103 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2025-02-08 14:11:18,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 127 transitions, 728 flow [2025-02-08 14:11:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:18,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2025-02-08 14:11:18,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2025-02-08 14:11:18,195 INFO L175 Difference]: Start difference. First operand has 77 places, 101 transitions, 438 flow. Second operand 3 states and 153 transitions. [2025-02-08 14:11:18,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 127 transitions, 728 flow [2025-02-08 14:11:18,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 727 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:18,205 INFO L231 Difference]: Finished difference. Result has 79 places, 102 transitions, 453 flow [2025-02-08 14:11:18,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=79, PETRI_TRANSITIONS=102} [2025-02-08 14:11:18,206 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2025-02-08 14:11:18,206 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 102 transitions, 453 flow [2025-02-08 14:11:18,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2025-02-08 14:11:18,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:18,206 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:18,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 14:11:18,207 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:18,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:18,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1600457064, now seen corresponding path program 1 times [2025-02-08 14:11:18,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:18,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585841257] [2025-02-08 14:11:18,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:18,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:18,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 14:11:18,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 14:11:18,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:18,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 14:11:18,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:18,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585841257] [2025-02-08 14:11:18,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585841257] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:18,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:18,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:18,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023758947] [2025-02-08 14:11:18,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:18,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:18,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:18,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:18,357 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2025-02-08 14:11:18,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 102 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:18,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:18,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2025-02-08 14:11:18,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:20,736 INFO L124 PetriNetUnfolderBase]: 23693/36204 cut-off events. [2025-02-08 14:11:20,737 INFO L125 PetriNetUnfolderBase]: For 15257/17304 co-relation queries the response was YES. [2025-02-08 14:11:20,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82238 conditions, 36204 events. 23693/36204 cut-off events. For 15257/17304 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 243160 event pairs, 18637 based on Foata normal form. 320/29486 useless extension candidates. Maximal degree in co-relation 82216. Up to 24052 conditions per place. [2025-02-08 14:11:20,970 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 101 selfloop transitions, 8 changer transitions 0/131 dead transitions. [2025-02-08 14:11:20,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 764 flow [2025-02-08 14:11:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2025-02-08 14:11:20,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-02-08 14:11:20,972 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 453 flow. Second operand 4 states and 186 transitions. [2025-02-08 14:11:20,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 764 flow [2025-02-08 14:11:20,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:20,982 INFO L231 Difference]: Finished difference. Result has 82 places, 102 transitions, 478 flow [2025-02-08 14:11:20,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=82, PETRI_TRANSITIONS=102} [2025-02-08 14:11:20,983 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2025-02-08 14:11:20,983 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 102 transitions, 478 flow [2025-02-08 14:11:20,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:20,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:20,983 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:20,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 14:11:20,984 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:20,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:20,984 INFO L85 PathProgramCache]: Analyzing trace with hash -737656637, now seen corresponding path program 1 times [2025-02-08 14:11:20,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:20,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899645766] [2025-02-08 14:11:20,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:20,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:20,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 14:11:21,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 14:11:21,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:21,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:11:21,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:21,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899645766] [2025-02-08 14:11:21,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899645766] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:21,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:21,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:21,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054811655] [2025-02-08 14:11:21,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:21,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:21,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:21,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:21,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:21,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2025-02-08 14:11:21,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 102 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:21,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:21,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2025-02-08 14:11:21,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:23,396 INFO L124 PetriNetUnfolderBase]: 26991/38864 cut-off events. [2025-02-08 14:11:23,397 INFO L125 PetriNetUnfolderBase]: For 17188/19351 co-relation queries the response was YES. [2025-02-08 14:11:23,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91711 conditions, 38864 events. 26991/38864 cut-off events. For 17188/19351 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 225966 event pairs, 14081 based on Foata normal form. 452/33486 useless extension candidates. Maximal degree in co-relation 91687. Up to 24066 conditions per place. [2025-02-08 14:11:23,545 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 103 selfloop transitions, 4 changer transitions 1/124 dead transitions. [2025-02-08 14:11:23,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 124 transitions, 760 flow [2025-02-08 14:11:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2025-02-08 14:11:23,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2025-02-08 14:11:23,547 INFO L175 Difference]: Start difference. First operand has 82 places, 102 transitions, 478 flow. Second operand 3 states and 140 transitions. [2025-02-08 14:11:23,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 124 transitions, 760 flow [2025-02-08 14:11:23,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 751 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:23,554 INFO L231 Difference]: Finished difference. Result has 84 places, 102 transitions, 486 flow [2025-02-08 14:11:23,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=84, PETRI_TRANSITIONS=102} [2025-02-08 14:11:23,554 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2025-02-08 14:11:23,555 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 102 transitions, 486 flow [2025-02-08 14:11:23,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:23,555 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:23,555 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:23,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 14:11:23,555 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:23,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:23,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1708825616, now seen corresponding path program 1 times [2025-02-08 14:11:23,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:23,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075230922] [2025-02-08 14:11:23,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:23,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:23,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:11:23,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:11:23,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:23,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:11:23,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075230922] [2025-02-08 14:11:23,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075230922] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:23,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718411307] [2025-02-08 14:11:23,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:23,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:23,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:23,737 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:23,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 14:11:23,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 14:11:23,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 14:11:23,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:23,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:23,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:11:23,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:11:23,869 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:11:23,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718411307] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:23,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:11:23,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-08 14:11:23,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332392022] [2025-02-08 14:11:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:23,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:23,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:23,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:11:23,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2025-02-08 14:11:23,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 102 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:23,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:23,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2025-02-08 14:11:23,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:25,802 INFO L124 PetriNetUnfolderBase]: 16299/24740 cut-off events. [2025-02-08 14:11:25,802 INFO L125 PetriNetUnfolderBase]: For 17744/19537 co-relation queries the response was YES. [2025-02-08 14:11:25,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58687 conditions, 24740 events. 16299/24740 cut-off events. For 17744/19537 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 155140 event pairs, 12973 based on Foata normal form. 1360/21562 useless extension candidates. Maximal degree in co-relation 58663. Up to 21771 conditions per place. [2025-02-08 14:11:26,053 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 76 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2025-02-08 14:11:26,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 100 transitions, 632 flow [2025-02-08 14:11:26,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2025-02-08 14:11:26,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2025-02-08 14:11:26,054 INFO L175 Difference]: Start difference. First operand has 84 places, 102 transitions, 486 flow. Second operand 3 states and 126 transitions. [2025-02-08 14:11:26,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 100 transitions, 632 flow [2025-02-08 14:11:26,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 100 transitions, 616 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-08 14:11:26,062 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 464 flow [2025-02-08 14:11:26,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=81, PETRI_TRANSITIONS=100} [2025-02-08 14:11:26,062 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2025-02-08 14:11:26,062 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 464 flow [2025-02-08 14:11:26,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:26,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:26,063 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:26,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:26,263 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,SelfDestructingSolverStorable14 [2025-02-08 14:11:26,263 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:26,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash 435997223, now seen corresponding path program 1 times [2025-02-08 14:11:26,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:26,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484352831] [2025-02-08 14:11:26,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:26,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:26,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 14:11:26,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 14:11:26,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:26,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 14:11:26,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:26,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484352831] [2025-02-08 14:11:26,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484352831] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:26,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:26,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:26,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860514928] [2025-02-08 14:11:26,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:26,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:26,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:26,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:26,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:26,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2025-02-08 14:11:26,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:26,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:26,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2025-02-08 14:11:26,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:29,126 INFO L124 PetriNetUnfolderBase]: 25849/37649 cut-off events. [2025-02-08 14:11:29,126 INFO L125 PetriNetUnfolderBase]: For 20097/23055 co-relation queries the response was YES. [2025-02-08 14:11:29,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89737 conditions, 37649 events. 25849/37649 cut-off events. For 20097/23055 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 221302 event pairs, 16025 based on Foata normal form. 640/32456 useless extension candidates. Maximal degree in co-relation 89713. Up to 27157 conditions per place. [2025-02-08 14:11:29,310 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 101 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2025-02-08 14:11:29,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 736 flow [2025-02-08 14:11:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:29,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:29,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2025-02-08 14:11:29,311 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2025-02-08 14:11:29,311 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 464 flow. Second operand 3 states and 138 transitions. [2025-02-08 14:11:29,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 736 flow [2025-02-08 14:11:29,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 735 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:29,319 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 489 flow [2025-02-08 14:11:29,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=489, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2025-02-08 14:11:29,320 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 9 predicate places. [2025-02-08 14:11:29,320 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 489 flow [2025-02-08 14:11:29,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:29,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:29,320 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:29,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 14:11:29,320 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:29,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:29,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1305669726, now seen corresponding path program 1 times [2025-02-08 14:11:29,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:29,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601189035] [2025-02-08 14:11:29,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:29,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:29,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 14:11:29,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 14:11:29,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:29,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-08 14:11:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601189035] [2025-02-08 14:11:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601189035] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:29,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263040551] [2025-02-08 14:11:29,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:29,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:29,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:29,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:29,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2025-02-08 14:11:29,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:29,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:29,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2025-02-08 14:11:29,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:32,357 INFO L124 PetriNetUnfolderBase]: 27356/42140 cut-off events. [2025-02-08 14:11:32,358 INFO L125 PetriNetUnfolderBase]: For 26127/29025 co-relation queries the response was YES. [2025-02-08 14:11:32,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99409 conditions, 42140 events. 27356/42140 cut-off events. For 26127/29025 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 276747 event pairs, 22206 based on Foata normal form. 120/34609 useless extension candidates. Maximal degree in co-relation 99384. Up to 27867 conditions per place. [2025-02-08 14:11:32,544 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 69 selfloop transitions, 7 changer transitions 43/143 dead transitions. [2025-02-08 14:11:32,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 143 transitions, 912 flow [2025-02-08 14:11:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:11:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:11:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2025-02-08 14:11:32,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5011494252873563 [2025-02-08 14:11:32,545 INFO L175 Difference]: Start difference. First operand has 84 places, 101 transitions, 489 flow. Second operand 5 states and 218 transitions. [2025-02-08 14:11:32,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 143 transitions, 912 flow [2025-02-08 14:11:32,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 143 transitions, 898 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:32,561 INFO L231 Difference]: Finished difference. Result has 88 places, 100 transitions, 503 flow [2025-02-08 14:11:32,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=503, PETRI_PLACES=88, PETRI_TRANSITIONS=100} [2025-02-08 14:11:32,561 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2025-02-08 14:11:32,561 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 100 transitions, 503 flow [2025-02-08 14:11:32,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:32,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:32,562 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:32,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 14:11:32,562 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 14:11:32,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1545692574, now seen corresponding path program 1 times [2025-02-08 14:11:32,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:32,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038175057] [2025-02-08 14:11:32,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:32,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-08 14:11:32,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-08 14:11:32,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:32,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:32,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:32,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038175057] [2025-02-08 14:11:32,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038175057] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:32,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135308373] [2025-02-08 14:11:32,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:32,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:32,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:32,747 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:32,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 14:11:32,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-08 14:11:32,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-08 14:11:32,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:32,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:32,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:11:32,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-08 14:11:32,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 14:11:33,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135308373] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:33,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:33,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 4] total 11 [2025-02-08 14:11:33,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238426736] [2025-02-08 14:11:33,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:33,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 14:11:33,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:33,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 14:11:33,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-08 14:11:33,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2025-02-08 14:11:33,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 100 transitions, 503 flow. Second operand has 11 states, 11 states have (on average 28.818181818181817) internal successors, (317), 11 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:33,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:33,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2025-02-08 14:11:33,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand