./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 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-nonblocking-cntr.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:55:08,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:55:08,574 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:55:08,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:55:08,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:55:08,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:55:08,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:55:08,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:55:08,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:55:08,594 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:55:08,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:55:08,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:55:08,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:55:08,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:55:08,594 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:55:08,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:55:08,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:55:08,594 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:55:08,595 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:55:08,596 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:55:08,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:55:08,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:55:08,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:55:08,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:55:08,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:55:08,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:55:08,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:55:08,597 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 -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2025-01-10 06:55:08,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:55:08,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:55:08,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:55:08,791 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:55:08,791 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:55:08,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2025-01-10 06:55:10,085 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e54447883/0e8acf8d379b450f8d29819ff0be702f/FLAG037c84503 [2025-01-10 06:55:10,335 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:55:10,336 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2025-01-10 06:55:10,349 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e54447883/0e8acf8d379b450f8d29819ff0be702f/FLAG037c84503 [2025-01-10 06:55:10,379 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e54447883/0e8acf8d379b450f8d29819ff0be702f [2025-01-10 06:55:10,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:55:10,385 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:55:10,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:55:10,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:55:10,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:55:10,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4601c4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10, skipping insertion in model container [2025-01-10 06:55:10,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,436 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:55:10,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:55:10,586 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:55:10,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:55:10,606 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:55:10,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10 WrapperNode [2025-01-10 06:55:10,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:55:10,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:55:10,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:55:10,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:55:10,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,626 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2025-01-10 06:55:10,627 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:55:10,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:55:10,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:55:10,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:55:10,632 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,649 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-10 06:55:10,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,652 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,653 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:55:10,657 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:55:10,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:55:10,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:55:10,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (1/1) ... [2025-01-10 06:55:10,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:55:10,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:10,688 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) [2025-01-10 06:55:10,691 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 [2025-01-10 06:55:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:55:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:55:10,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:55:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:55:10,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:55:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:55:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 06:55:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 06:55:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:55:10,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:55:10,720 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:55:10,827 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:55:10,829 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:55:10,956 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:55:10,956 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:55:11,109 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:55:11,109 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:55:11,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:11 BoogieIcfgContainer [2025-01-10 06:55:11,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:55:11,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:55:11,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:55:11,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:55:11,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:55:10" (1/3) ... [2025-01-10 06:55:11,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b1ff59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:11, skipping insertion in model container [2025-01-10 06:55:11,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:10" (2/3) ... [2025-01-10 06:55:11,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b1ff59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:11, skipping insertion in model container [2025-01-10 06:55:11,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:11" (3/3) ... [2025-01-10 06:55:11,119 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2025-01-10 06:55:11,132 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:55:11,133 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr.wvr.c that has 3 procedures, 28 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-01-10 06:55:11,134 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:55:11,186 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 06:55:11,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 29 transitions, 72 flow [2025-01-10 06:55:11,240 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2025-01-10 06:55:11,246 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 06:55:11,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 2/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 64 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-01-10 06:55:11,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 29 transitions, 72 flow [2025-01-10 06:55:11,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 25 transitions, 59 flow [2025-01-10 06:55:11,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:55:11,276 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;@48e444bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:55:11,276 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-01-10 06:55:11,281 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:55:11,283 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2025-01-10 06:55:11,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:55:11,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:11,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 06:55:11,284 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:11,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash 247914770, now seen corresponding path program 1 times [2025-01-10 06:55:11,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:11,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917434948] [2025-01-10 06:55:11,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:11,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:11,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 06:55:11,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 06:55:11,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:11,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:11,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:11,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917434948] [2025-01-10 06:55:11,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917434948] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:11,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:11,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:55:11,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518322687] [2025-01-10 06:55:11,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:11,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:55:11,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:11,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:55:11,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:55:11,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 06:55:11,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2025-01-10 06:55:11,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:11,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 06:55:11,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:11,670 INFO L124 PetriNetUnfolderBase]: 143/294 cut-off events. [2025-01-10 06:55:11,670 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-01-10 06:55:11,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 294 events. 143/294 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1232 event pairs, 49 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 517. Up to 191 conditions per place. [2025-01-10 06:55:11,675 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 23 selfloop transitions, 2 changer transitions 2/33 dead transitions. [2025-01-10 06:55:11,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 135 flow [2025-01-10 06:55:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:55:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:55:11,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2025-01-10 06:55:11,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 06:55:11,688 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 59 flow. Second operand 3 states and 58 transitions. [2025-01-10 06:55:11,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 135 flow [2025-01-10 06:55:11,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 127 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:55:11,693 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 72 flow [2025-01-10 06:55:11,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2025-01-10 06:55:11,698 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2025-01-10 06:55:11,698 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 72 flow [2025-01-10 06:55:11,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2025-01-10 06:55:11,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:11,698 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:11,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:55:11,698 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:11,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:11,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2022902293, now seen corresponding path program 1 times [2025-01-10 06:55:11,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:11,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837878372] [2025-01-10 06:55:11,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:11,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:11,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:55:11,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:55:11,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:11,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:11,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:11,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837878372] [2025-01-10 06:55:11,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837878372] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:11,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:11,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:55:11,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782588110] [2025-01-10 06:55:11,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:11,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:11,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:11,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:55:11,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2025-01-10 06:55:11,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2025-01-10 06:55:11,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:11,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2025-01-10 06:55:11,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:11,886 INFO L124 PetriNetUnfolderBase]: 243/472 cut-off events. [2025-01-10 06:55:11,887 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-01-10 06:55:11,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 472 events. 243/472 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2212 event pairs, 111 based on Foata normal form. 14/401 useless extension candidates. Maximal degree in co-relation 535. Up to 337 conditions per place. [2025-01-10 06:55:11,890 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 39 selfloop transitions, 3 changer transitions 1/46 dead transitions. [2025-01-10 06:55:11,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 216 flow [2025-01-10 06:55:11,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2025-01-10 06:55:11,891 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5603448275862069 [2025-01-10 06:55:11,891 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 72 flow. Second operand 4 states and 65 transitions. [2025-01-10 06:55:11,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 216 flow [2025-01-10 06:55:11,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:11,892 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 94 flow [2025-01-10 06:55:11,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2025-01-10 06:55:11,893 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2025-01-10 06:55:11,893 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 94 flow [2025-01-10 06:55:11,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2025-01-10 06:55:11,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:11,893 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:11,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 06:55:11,893 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:11,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1104919708, now seen corresponding path program 1 times [2025-01-10 06:55:11,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:11,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804295972] [2025-01-10 06:55:11,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:11,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:11,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:55:11,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:55:11,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:11,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:11,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:11,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804295972] [2025-01-10 06:55:11,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804295972] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:11,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:11,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:55:11,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506069220] [2025-01-10 06:55:11,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:11,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:55:11,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:11,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:55:11,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:55:11,942 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 06:55:11,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-01-10 06:55:11,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:11,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 06:55:11,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:11,990 INFO L124 PetriNetUnfolderBase]: 130/254 cut-off events. [2025-01-10 06:55:11,991 INFO L125 PetriNetUnfolderBase]: For 87/106 co-relation queries the response was YES. [2025-01-10 06:55:11,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 254 events. 130/254 cut-off events. For 87/106 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1084 event pairs, 101 based on Foata normal form. 7/216 useless extension candidates. Maximal degree in co-relation 393. Up to 224 conditions per place. [2025-01-10 06:55:11,992 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 18 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2025-01-10 06:55:11,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 128 flow [2025-01-10 06:55:11,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:55:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:55:11,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2025-01-10 06:55:11,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2025-01-10 06:55:11,993 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 94 flow. Second operand 3 states and 42 transitions. [2025-01-10 06:55:11,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 128 flow [2025-01-10 06:55:11,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:11,995 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 90 flow [2025-01-10 06:55:11,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2025-01-10 06:55:11,995 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2025-01-10 06:55:11,995 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 90 flow [2025-01-10 06:55:11,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-01-10 06:55:11,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:11,996 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:11,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:55:11,996 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:11,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:11,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1521334617, now seen corresponding path program 1 times [2025-01-10 06:55:11,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:11,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382131704] [2025-01-10 06:55:11,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:11,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:12,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:55:12,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:55:12,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:12,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:12,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:12,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382131704] [2025-01-10 06:55:12,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382131704] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:12,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:12,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:55:12,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176265936] [2025-01-10 06:55:12,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:12,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:55:12,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:12,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:55:12,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:55:12,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 06:55:12,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-01-10 06:55:12,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:12,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 06:55:12,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:12,100 INFO L124 PetriNetUnfolderBase]: 180/347 cut-off events. [2025-01-10 06:55:12,100 INFO L125 PetriNetUnfolderBase]: For 111/148 co-relation queries the response was YES. [2025-01-10 06:55:12,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 347 events. 180/347 cut-off events. For 111/148 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1584 event pairs, 101 based on Foata normal form. 26/322 useless extension candidates. Maximal degree in co-relation 821. Up to 225 conditions per place. [2025-01-10 06:55:12,103 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 29 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2025-01-10 06:55:12,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 193 flow [2025-01-10 06:55:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:55:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:55:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2025-01-10 06:55:12,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2025-01-10 06:55:12,105 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 90 flow. Second operand 3 states and 53 transitions. [2025-01-10 06:55:12,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 193 flow [2025-01-10 06:55:12,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:12,107 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 103 flow [2025-01-10 06:55:12,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2025-01-10 06:55:12,107 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2025-01-10 06:55:12,107 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 103 flow [2025-01-10 06:55:12,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-01-10 06:55:12,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:12,108 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:12,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:55:12,108 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:12,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1596352384, now seen corresponding path program 1 times [2025-01-10 06:55:12,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:12,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274488177] [2025-01-10 06:55:12,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:12,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:12,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:55:12,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:55:12,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:12,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:12,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:12,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274488177] [2025-01-10 06:55:12,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274488177] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:12,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:12,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:55:12,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660641684] [2025-01-10 06:55:12,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:12,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:55:12,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:12,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:55:12,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:55:12,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 06:55:12,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2025-01-10 06:55:12,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:12,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 06:55:12,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:12,223 INFO L124 PetriNetUnfolderBase]: 157/301 cut-off events. [2025-01-10 06:55:12,223 INFO L125 PetriNetUnfolderBase]: For 179/216 co-relation queries the response was YES. [2025-01-10 06:55:12,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 301 events. 157/301 cut-off events. For 179/216 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1316 event pairs, 126 based on Foata normal form. 13/281 useless extension candidates. Maximal degree in co-relation 796. Up to 269 conditions per place. [2025-01-10 06:55:12,227 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 18 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2025-01-10 06:55:12,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 137 flow [2025-01-10 06:55:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:55:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:55:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2025-01-10 06:55:12,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2025-01-10 06:55:12,229 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 103 flow. Second operand 3 states and 41 transitions. [2025-01-10 06:55:12,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 137 flow [2025-01-10 06:55:12,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:12,230 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 99 flow [2025-01-10 06:55:12,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2025-01-10 06:55:12,230 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2025-01-10 06:55:12,230 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 99 flow [2025-01-10 06:55:12,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2025-01-10 06:55:12,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:12,230 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:12,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:55:12,233 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:12,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:12,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1596352385, now seen corresponding path program 1 times [2025-01-10 06:55:12,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:12,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696770275] [2025-01-10 06:55:12,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:12,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:12,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:55:12,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:55:12,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:12,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:12,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:12,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696770275] [2025-01-10 06:55:12,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696770275] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:12,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793644328] [2025-01-10 06:55:12,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:12,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:12,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:12,288 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) [2025-01-10 06:55:12,290 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 [2025-01-10 06:55:12,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:55:12,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:55:12,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:12,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:12,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:55:12,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:12,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:12,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793644328] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:12,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:12,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-01-10 06:55:12,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574847371] [2025-01-10 06:55:12,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:12,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 06:55:12,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:12,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 06:55:12,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:55:12,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 06:55:12,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 99 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:12,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:12,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 06:55:12,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:12,558 INFO L124 PetriNetUnfolderBase]: 406/1009 cut-off events. [2025-01-10 06:55:12,559 INFO L125 PetriNetUnfolderBase]: For 411/421 co-relation queries the response was YES. [2025-01-10 06:55:12,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2440 conditions, 1009 events. 406/1009 cut-off events. For 411/421 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5754 event pairs, 37 based on Foata normal form. 17/969 useless extension candidates. Maximal degree in co-relation 2428. Up to 187 conditions per place. [2025-01-10 06:55:12,565 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 61 selfloop transitions, 15 changer transitions 2/85 dead transitions. [2025-01-10 06:55:12,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 85 transitions, 470 flow [2025-01-10 06:55:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:55:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:55:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2025-01-10 06:55:12,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6502463054187192 [2025-01-10 06:55:12,568 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 99 flow. Second operand 7 states and 132 transitions. [2025-01-10 06:55:12,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 85 transitions, 470 flow [2025-01-10 06:55:12,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 85 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:12,570 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 248 flow [2025-01-10 06:55:12,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2025-01-10 06:55:12,572 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2025-01-10 06:55:12,572 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 248 flow [2025-01-10 06:55:12,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:12,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:12,573 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:12,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 06:55:12,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:12,777 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:12,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:12,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1281065093, now seen corresponding path program 1 times [2025-01-10 06:55:12,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:12,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002991387] [2025-01-10 06:55:12,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:12,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:12,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:55:12,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:55:12,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:12,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:12,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002991387] [2025-01-10 06:55:12,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002991387] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752553223] [2025-01-10 06:55:12,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:12,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:12,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:12,859 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) [2025-01-10 06:55:12,862 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 [2025-01-10 06:55:12,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:55:12,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:55:12,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:12,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:12,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:55:12,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:12,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:12,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752553223] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:12,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:55:12,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2025-01-10 06:55:12,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930523147] [2025-01-10 06:55:12,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:12,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:12,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:12,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:12,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2025-01-10 06:55:12,983 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 06:55:12,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2025-01-10 06:55:12,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:12,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 06:55:12,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:13,134 INFO L124 PetriNetUnfolderBase]: 358/768 cut-off events. [2025-01-10 06:55:13,134 INFO L125 PetriNetUnfolderBase]: For 1473/1534 co-relation queries the response was YES. [2025-01-10 06:55:13,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 768 events. 358/768 cut-off events. For 1473/1534 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3883 event pairs, 68 based on Foata normal form. 11/761 useless extension candidates. Maximal degree in co-relation 2329. Up to 510 conditions per place. [2025-01-10 06:55:13,143 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 41 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2025-01-10 06:55:13,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 390 flow [2025-01-10 06:55:13,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:13,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2025-01-10 06:55:13,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2025-01-10 06:55:13,145 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 248 flow. Second operand 4 states and 59 transitions. [2025-01-10 06:55:13,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 390 flow [2025-01-10 06:55:13,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 376 flow, removed 7 selfloop flow, removed 0 redundant places. [2025-01-10 06:55:13,153 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 246 flow [2025-01-10 06:55:13,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2025-01-10 06:55:13,153 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2025-01-10 06:55:13,154 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 246 flow [2025-01-10 06:55:13,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2025-01-10 06:55:13,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:13,155 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:13,161 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 [2025-01-10 06:55:13,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:13,356 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:13,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:13,356 INFO L85 PathProgramCache]: Analyzing trace with hash -44554566, now seen corresponding path program 1 times [2025-01-10 06:55:13,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:13,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660288285] [2025-01-10 06:55:13,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:13,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:13,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:55:13,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:55:13,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:13,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:13,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:13,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660288285] [2025-01-10 06:55:13,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660288285] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:13,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365560756] [2025-01-10 06:55:13,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:13,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:13,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:13,454 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) [2025-01-10 06:55:13,456 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 [2025-01-10 06:55:13,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:55:13,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:55:13,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:13,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:13,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:55:13,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:55:13,520 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:55:13,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365560756] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:13,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:55:13,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2025-01-10 06:55:13,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184466305] [2025-01-10 06:55:13,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:13,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:13,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:13,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:13,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:55:13,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-01-10 06:55:13,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2025-01-10 06:55:13,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:13,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-01-10 06:55:13,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:13,617 INFO L124 PetriNetUnfolderBase]: 423/788 cut-off events. [2025-01-10 06:55:13,618 INFO L125 PetriNetUnfolderBase]: For 1397/1478 co-relation queries the response was YES. [2025-01-10 06:55:13,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 788 events. 423/788 cut-off events. For 1397/1478 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3769 event pairs, 145 based on Foata normal form. 38/731 useless extension candidates. Maximal degree in co-relation 2432. Up to 366 conditions per place. [2025-01-10 06:55:13,622 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 30 selfloop transitions, 10 changer transitions 4/50 dead transitions. [2025-01-10 06:55:13,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 378 flow [2025-01-10 06:55:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2025-01-10 06:55:13,623 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45689655172413796 [2025-01-10 06:55:13,623 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 246 flow. Second operand 4 states and 53 transitions. [2025-01-10 06:55:13,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 378 flow [2025-01-10 06:55:13,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 360 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-01-10 06:55:13,626 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 225 flow [2025-01-10 06:55:13,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2025-01-10 06:55:13,627 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2025-01-10 06:55:13,627 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 225 flow [2025-01-10 06:55:13,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2025-01-10 06:55:13,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:13,627 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:13,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 06:55:13,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:13,828 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:13,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:13,829 INFO L85 PathProgramCache]: Analyzing trace with hash 791325955, now seen corresponding path program 1 times [2025-01-10 06:55:13,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:13,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566226323] [2025-01-10 06:55:13,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:13,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:13,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:55:13,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:55:13,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:13,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:13,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566226323] [2025-01-10 06:55:13,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566226323] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7521384] [2025-01-10 06:55:13,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:13,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:13,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:13,896 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) [2025-01-10 06:55:13,897 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 [2025-01-10 06:55:13,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:55:13,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:55:13,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:13,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:13,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:55:13,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:13,963 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:55:13,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7521384] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:13,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:55:13,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-01-10 06:55:13,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881439086] [2025-01-10 06:55:13,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:13,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:55:13,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:13,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:55:13,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:55:13,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2025-01-10 06:55:13,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2025-01-10 06:55:13,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:13,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2025-01-10 06:55:13,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:14,081 INFO L124 PetriNetUnfolderBase]: 362/749 cut-off events. [2025-01-10 06:55:14,081 INFO L125 PetriNetUnfolderBase]: For 1911/1943 co-relation queries the response was YES. [2025-01-10 06:55:14,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 749 events. 362/749 cut-off events. For 1911/1943 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3246 event pairs, 4 based on Foata normal form. 44/749 useless extension candidates. Maximal degree in co-relation 2376. Up to 281 conditions per place. [2025-01-10 06:55:14,085 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 58 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2025-01-10 06:55:14,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 589 flow [2025-01-10 06:55:14,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:55:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:55:14,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2025-01-10 06:55:14,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2025-01-10 06:55:14,087 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 225 flow. Second operand 6 states and 72 transitions. [2025-01-10 06:55:14,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 589 flow [2025-01-10 06:55:14,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 561 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:55:14,090 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 221 flow [2025-01-10 06:55:14,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2025-01-10 06:55:14,091 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2025-01-10 06:55:14,091 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 221 flow [2025-01-10 06:55:14,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2025-01-10 06:55:14,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:14,091 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-10 06:55:14,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 06:55:14,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-01-10 06:55:14,292 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:14,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:14,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1238698897, now seen corresponding path program 1 times [2025-01-10 06:55:14,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:14,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634796199] [2025-01-10 06:55:14,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:14,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:14,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:55:14,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:55:14,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:14,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:14,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634796199] [2025-01-10 06:55:14,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634796199] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937257042] [2025-01-10 06:55:14,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:14,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:14,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:14,348 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) [2025-01-10 06:55:14,353 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 [2025-01-10 06:55:14,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:55:14,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:55:14,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:14,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:14,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:55:14,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:14,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:14,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937257042] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:14,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:14,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 06:55:14,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030504041] [2025-01-10 06:55:14,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:14,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:55:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:14,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:55:14,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:55:14,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2025-01-10 06:55:14,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 221 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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) [2025-01-10 06:55:14,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:14,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2025-01-10 06:55:14,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:14,706 INFO L124 PetriNetUnfolderBase]: 560/1166 cut-off events. [2025-01-10 06:55:14,706 INFO L125 PetriNetUnfolderBase]: For 2693/2721 co-relation queries the response was YES. [2025-01-10 06:55:14,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3794 conditions, 1166 events. 560/1166 cut-off events. For 2693/2721 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5509 event pairs, 134 based on Foata normal form. 72/1236 useless extension candidates. Maximal degree in co-relation 3773. Up to 356 conditions per place. [2025-01-10 06:55:14,715 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 105 selfloop transitions, 9 changer transitions 0/118 dead transitions. [2025-01-10 06:55:14,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 118 transitions, 1006 flow [2025-01-10 06:55:14,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:55:14,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:55:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2025-01-10 06:55:14,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2025-01-10 06:55:14,716 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 221 flow. Second operand 10 states and 127 transitions. [2025-01-10 06:55:14,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 118 transitions, 1006 flow [2025-01-10 06:55:14,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 118 transitions, 991 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-01-10 06:55:14,723 INFO L231 Difference]: Finished difference. Result has 58 places, 39 transitions, 276 flow [2025-01-10 06:55:14,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=58, PETRI_TRANSITIONS=39} [2025-01-10 06:55:14,724 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2025-01-10 06:55:14,725 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 39 transitions, 276 flow [2025-01-10 06:55:14,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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) [2025-01-10 06:55:14,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:14,725 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2025-01-10 06:55:14,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 06:55:14,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 06:55:14,926 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:14,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:14,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2034604691, now seen corresponding path program 2 times [2025-01-10 06:55:14,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:14,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960173164] [2025-01-10 06:55:14,927 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:14,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:14,935 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-01-10 06:55:14,941 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 06:55:14,942 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:14,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:15,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:15,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960173164] [2025-01-10 06:55:15,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960173164] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:15,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418844780] [2025-01-10 06:55:15,034 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:15,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:15,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:15,036 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) [2025-01-10 06:55:15,044 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 [2025-01-10 06:55:15,068 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-01-10 06:55:15,078 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 06:55:15,078 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:15,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:15,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 06:55:15,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:15,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:15,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418844780] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:15,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:15,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 06:55:15,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659323859] [2025-01-10 06:55:15,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:15,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 06:55:15,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:15,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 06:55:15,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-10 06:55:15,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 06:55:15,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 39 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 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) [2025-01-10 06:55:15,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:15,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 06:55:15,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:15,516 INFO L124 PetriNetUnfolderBase]: 759/1972 cut-off events. [2025-01-10 06:55:15,517 INFO L125 PetriNetUnfolderBase]: For 7143/7245 co-relation queries the response was YES. [2025-01-10 06:55:15,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6696 conditions, 1972 events. 759/1972 cut-off events. For 7143/7245 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11712 event pairs, 29 based on Foata normal form. 88/2045 useless extension candidates. Maximal degree in co-relation 6673. Up to 365 conditions per place. [2025-01-10 06:55:15,534 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 96 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2025-01-10 06:55:15,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 146 transitions, 1222 flow [2025-01-10 06:55:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 06:55:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-10 06:55:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 210 transitions. [2025-01-10 06:55:15,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5570291777188329 [2025-01-10 06:55:15,536 INFO L175 Difference]: Start difference. First operand has 58 places, 39 transitions, 276 flow. Second operand 13 states and 210 transitions. [2025-01-10 06:55:15,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 146 transitions, 1222 flow [2025-01-10 06:55:15,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 146 transitions, 1193 flow, removed 12 selfloop flow, removed 2 redundant places. [2025-01-10 06:55:15,548 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 762 flow [2025-01-10 06:55:15,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=762, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2025-01-10 06:55:15,549 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2025-01-10 06:55:15,549 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 762 flow [2025-01-10 06:55:15,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 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) [2025-01-10 06:55:15,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:15,549 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2025-01-10 06:55:15,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 06:55:15,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-10 06:55:15,754 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:15,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1964830691, now seen corresponding path program 2 times [2025-01-10 06:55:15,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:15,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893214119] [2025-01-10 06:55:15,755 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:15,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:15,762 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-01-10 06:55:15,764 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-01-10 06:55:15,764 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:55:15,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-10 06:55:15,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:15,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893214119] [2025-01-10 06:55:15,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893214119] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:15,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798689822] [2025-01-10 06:55:15,787 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:15,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:15,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:15,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:15,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 06:55:15,835 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-01-10 06:55:15,841 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-01-10 06:55:15,841 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:55:15,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:15,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:55:15,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-10 06:55:15,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-10 06:55:15,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798689822] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:15,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:15,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-01-10 06:55:15,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462707087] [2025-01-10 06:55:15,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:15,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:55:15,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:15,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:55:15,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:55:15,927 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-01-10 06:55:15,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 762 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2025-01-10 06:55:15,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:15,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-01-10 06:55:15,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:16,169 INFO L124 PetriNetUnfolderBase]: 1482/2823 cut-off events. [2025-01-10 06:55:16,170 INFO L125 PetriNetUnfolderBase]: For 13002/13092 co-relation queries the response was YES. [2025-01-10 06:55:16,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10701 conditions, 2823 events. 1482/2823 cut-off events. For 13002/13092 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 13998 event pairs, 230 based on Foata normal form. 126/2949 useless extension candidates. Maximal degree in co-relation 10666. Up to 1240 conditions per place. [2025-01-10 06:55:16,193 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 120 selfloop transitions, 13 changer transitions 0/136 dead transitions. [2025-01-10 06:55:16,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 136 transitions, 1766 flow [2025-01-10 06:55:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:55:16,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:55:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2025-01-10 06:55:16,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3310344827586207 [2025-01-10 06:55:16,194 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 762 flow. Second operand 5 states and 48 transitions. [2025-01-10 06:55:16,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 136 transitions, 1766 flow [2025-01-10 06:55:16,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 136 transitions, 1515 flow, removed 117 selfloop flow, removed 6 redundant places. [2025-01-10 06:55:16,216 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 671 flow [2025-01-10 06:55:16,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=671, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2025-01-10 06:55:16,217 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2025-01-10 06:55:16,217 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 671 flow [2025-01-10 06:55:16,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2025-01-10 06:55:16,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:16,217 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2025-01-10 06:55:16,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-10 06:55:16,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:16,422 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:16,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:16,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1696749357, now seen corresponding path program 3 times [2025-01-10 06:55:16,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:16,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054900741] [2025-01-10 06:55:16,423 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:55:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:16,428 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 11 equivalence classes. [2025-01-10 06:55:16,438 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 55 of 55 statements. [2025-01-10 06:55:16,438 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-10 06:55:16,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:16,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:16,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054900741] [2025-01-10 06:55:16,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054900741] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:16,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805926072] [2025-01-10 06:55:16,596 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:55:16,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:16,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:16,603 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:16,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 06:55:16,648 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 11 equivalence classes. [2025-01-10 06:55:16,664 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 55 of 55 statements. [2025-01-10 06:55:16,665 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-10 06:55:16,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:16,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 06:55:16,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:16,735 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:16,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:17,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805926072] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:17,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:17,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-01-10 06:55:17,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707357333] [2025-01-10 06:55:17,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:17,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-10 06:55:17,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:17,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-10 06:55:17,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-10 06:55:17,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 06:55:17,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 671 flow. Second operand has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 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) [2025-01-10 06:55:17,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:17,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 06:55:17,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:17,845 INFO L124 PetriNetUnfolderBase]: 1587/4033 cut-off events. [2025-01-10 06:55:17,845 INFO L125 PetriNetUnfolderBase]: For 34459/34615 co-relation queries the response was YES. [2025-01-10 06:55:17,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14577 conditions, 4033 events. 1587/4033 cut-off events. For 34459/34615 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23008 event pairs, 31 based on Foata normal form. 184/4188 useless extension candidates. Maximal degree in co-relation 14545. Up to 803 conditions per place. [2025-01-10 06:55:17,870 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 170 selfloop transitions, 144 changer transitions 0/324 dead transitions. [2025-01-10 06:55:17,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 324 transitions, 2977 flow [2025-01-10 06:55:17,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-10 06:55:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-01-10 06:55:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 414 transitions. [2025-01-10 06:55:17,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5710344827586207 [2025-01-10 06:55:17,872 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 671 flow. Second operand 25 states and 414 transitions. [2025-01-10 06:55:17,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 324 transitions, 2977 flow [2025-01-10 06:55:17,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 324 transitions, 2927 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:55:17,892 INFO L231 Difference]: Finished difference. Result has 119 places, 180 transitions, 2232 flow [2025-01-10 06:55:17,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2232, PETRI_PLACES=119, PETRI_TRANSITIONS=180} [2025-01-10 06:55:17,893 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2025-01-10 06:55:17,893 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 180 transitions, 2232 flow [2025-01-10 06:55:17,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 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) [2025-01-10 06:55:17,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:17,894 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2025-01-10 06:55:17,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-10 06:55:18,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:18,094 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:18,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:18,095 INFO L85 PathProgramCache]: Analyzing trace with hash -782076589, now seen corresponding path program 4 times [2025-01-10 06:55:18,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:18,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784056618] [2025-01-10 06:55:18,095 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:55:18,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:18,107 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 115 statements into 2 equivalence classes. [2025-01-10 06:55:18,138 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 115 of 115 statements. [2025-01-10 06:55:18,138 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:55:18,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:18,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:18,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784056618] [2025-01-10 06:55:18,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784056618] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:18,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623978745] [2025-01-10 06:55:18,716 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:55:18,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:18,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:18,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:18,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 06:55:18,751 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 115 statements into 2 equivalence classes. [2025-01-10 06:55:18,780 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 115 of 115 statements. [2025-01-10 06:55:18,780 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:55:18,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:18,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-10 06:55:18,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:18,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:19,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623978745] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:19,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:19,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2025-01-10 06:55:19,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761655212] [2025-01-10 06:55:19,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:19,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-01-10 06:55:19,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:19,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-01-10 06:55:19,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-10 06:55:19,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 06:55:19,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 180 transitions, 2232 flow. Second operand has 49 states, 49 states have (on average 10.040816326530612) internal successors, (492), 49 states have internal predecessors, (492), 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) [2025-01-10 06:55:19,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:19,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 06:55:19,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:22,183 INFO L124 PetriNetUnfolderBase]: 4119/10683 cut-off events. [2025-01-10 06:55:22,184 INFO L125 PetriNetUnfolderBase]: For 275497/275835 co-relation queries the response was YES. [2025-01-10 06:55:22,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40268 conditions, 10683 events. 4119/10683 cut-off events. For 275497/275835 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 66770 event pairs, 57 based on Foata normal form. 376/11026 useless extension candidates. Maximal degree in co-relation 40213. Up to 2433 conditions per place. [2025-01-10 06:55:22,266 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 316 selfloop transitions, 500 changer transitions 0/826 dead transitions. [2025-01-10 06:55:22,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 826 transitions, 9742 flow [2025-01-10 06:55:22,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-01-10 06:55:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-01-10 06:55:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 822 transitions. [2025-01-10 06:55:22,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5784658691062632 [2025-01-10 06:55:22,270 INFO L175 Difference]: Start difference. First operand has 119 places, 180 transitions, 2232 flow. Second operand 49 states and 822 transitions. [2025-01-10 06:55:22,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 826 transitions, 9742 flow [2025-01-10 06:55:22,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 826 transitions, 7991 flow, removed 852 selfloop flow, removed 5 redundant places. [2025-01-10 06:55:22,528 INFO L231 Difference]: Finished difference. Result has 208 places, 538 transitions, 7092 flow [2025-01-10 06:55:22,528 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7092, PETRI_PLACES=208, PETRI_TRANSITIONS=538} [2025-01-10 06:55:22,530 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2025-01-10 06:55:22,530 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 538 transitions, 7092 flow [2025-01-10 06:55:22,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 10.040816326530612) internal successors, (492), 49 states have internal predecessors, (492), 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) [2025-01-10 06:55:22,530 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:22,531 INFO L206 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2025-01-10 06:55:22,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 06:55:22,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:22,731 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:22,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:22,733 INFO L85 PathProgramCache]: Analyzing trace with hash -340865453, now seen corresponding path program 5 times [2025-01-10 06:55:22,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:22,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950447848] [2025-01-10 06:55:22,733 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 06:55:22,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:22,746 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 235 statements into 47 equivalence classes. [2025-01-10 06:55:22,810 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 235 of 235 statements. [2025-01-10 06:55:22,810 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-01-10 06:55:22,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:24,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:24,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950447848] [2025-01-10 06:55:24,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950447848] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:24,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13040807] [2025-01-10 06:55:24,553 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 06:55:24,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:24,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:24,555 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:24,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 06:55:24,594 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 235 statements into 47 equivalence classes. [2025-01-10 06:55:24,672 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 235 of 235 statements. [2025-01-10 06:55:24,672 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-01-10 06:55:24,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:24,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-01-10 06:55:24,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:24,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:27,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13040807] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:27,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:27,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2025-01-10 06:55:27,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578949408] [2025-01-10 06:55:27,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:27,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-01-10 06:55:27,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:27,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-01-10 06:55:27,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-01-10 06:55:27,383 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 06:55:27,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 538 transitions, 7092 flow. Second operand has 96 states, 96 states have (on average 10.0) internal successors, (960), 96 states have internal predecessors, (960), 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) [2025-01-10 06:55:27,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:27,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 06:55:27,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:38,605 INFO L124 PetriNetUnfolderBase]: 12651/33281 cut-off events. [2025-01-10 06:55:38,606 INFO L125 PetriNetUnfolderBase]: For 2191733/2192443 co-relation queries the response was YES. [2025-01-10 06:55:38,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125481 conditions, 33281 events. 12651/33281 cut-off events. For 2191733/2192443 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 240970 event pairs, 177 based on Foata normal form. 760/34040 useless extension candidates. Maximal degree in co-relation 125383. Up to 8011 conditions per place. [2025-01-10 06:55:38,985 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 604 selfloop transitions, 1792 changer transitions 0/2406 dead transitions. [2025-01-10 06:55:38,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 2406 transitions, 31114 flow [2025-01-10 06:55:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-01-10 06:55:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2025-01-10 06:55:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 1626 transitions. [2025-01-10 06:55:38,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.584051724137931 [2025-01-10 06:55:38,989 INFO L175 Difference]: Start difference. First operand has 208 places, 538 transitions, 7092 flow. Second operand 96 states and 1626 transitions. [2025-01-10 06:55:38,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 2406 transitions, 31114 flow [2025-01-10 06:55:39,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 2406 transitions, 24595 flow, removed 3150 selfloop flow, removed 11 redundant places. [2025-01-10 06:55:39,663 INFO L231 Difference]: Finished difference. Result has 386 places, 1832 transitions, 24462 flow [2025-01-10 06:55:39,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6335, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=24462, PETRI_PLACES=386, PETRI_TRANSITIONS=1832} [2025-01-10 06:55:39,664 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2025-01-10 06:55:39,664 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 1832 transitions, 24462 flow [2025-01-10 06:55:39,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 10.0) internal successors, (960), 96 states have internal predecessors, (960), 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) [2025-01-10 06:55:39,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:39,665 INFO L206 CegarLoopForPetriNet]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2025-01-10 06:55:39,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 06:55:39,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-10 06:55:39,869 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:55:39,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:39,873 INFO L85 PathProgramCache]: Analyzing trace with hash -590184365, now seen corresponding path program 6 times [2025-01-10 06:55:39,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:39,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197245322] [2025-01-10 06:55:39,874 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 06:55:39,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:39,904 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 475 statements into 95 equivalence classes. [2025-01-10 06:55:40,446 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 475 of 475 statements. [2025-01-10 06:55:40,446 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-01-10 06:55:40,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:46,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:46,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197245322] [2025-01-10 06:55:46,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197245322] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:46,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846832936] [2025-01-10 06:55:46,148 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 06:55:46,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:46,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:46,151 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:46,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 06:55:46,206 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 475 statements into 95 equivalence classes. [2025-01-10 06:55:46,417 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 475 of 475 statements. [2025-01-10 06:55:46,417 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-01-10 06:55:46,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:46,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 97 conjuncts are in the unsatisfiable core [2025-01-10 06:55:46,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:46,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846832936] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:55,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:55,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2025-01-10 06:55:55,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562421047] [2025-01-10 06:55:55,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:55,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-01-10 06:55:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:55,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-01-10 06:55:55,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-01-10 06:55:55,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 06:55:55,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1832 transitions, 24462 flow. Second operand has 193 states, 193 states have (on average 10.010362694300518) internal successors, (1932), 193 states have internal predecessors, (1932), 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) [2025-01-10 06:55:55,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:55,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 06:55:55,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand