./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:46:05,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:46:05,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:46:05,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:46:05,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:46:05,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:46:05,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:46:05,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:46:05,663 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:46:05,663 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:46:05,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:46:05,664 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:46:05,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:46:05,664 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:46:05,665 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:46:05,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:46:05,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:46:05,666 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/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 -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2025-03-17 19:46:05,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:46:05,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:46:05,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:46:05,905 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:46:05,905 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:46:05,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2025-03-17 19:46:06,986 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85eba7f85/5672e88b54a0489ab21d845aeec86e21/FLAG748223557 [2025-03-17 19:46:07,237 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:46:07,237 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2025-03-17 19:46:07,242 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85eba7f85/5672e88b54a0489ab21d845aeec86e21/FLAG748223557 [2025-03-17 19:46:07,252 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85eba7f85/5672e88b54a0489ab21d845aeec86e21 [2025-03-17 19:46:07,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:46:07,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:46:07,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:46:07,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:46:07,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:46:07,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d31ac5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07, skipping insertion in model container [2025-03-17 19:46:07,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,273 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:46:07,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:46:07,408 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:46:07,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:46:07,443 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:46:07,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07 WrapperNode [2025-03-17 19:46:07,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:46:07,445 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:46:07,445 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:46:07,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:46:07,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,477 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 183 [2025-03-17 19:46:07,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:46:07,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:46:07,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:46:07,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:46:07,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,510 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2025-03-17 19:46:07,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,520 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,524 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,525 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:46:07,529 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:46:07,529 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:46:07,529 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:46:07,529 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (1/1) ... [2025-03-17 19:46:07,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:46:07,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:07,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:46:07,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:46:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:46:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:46:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:46:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:46:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:46:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:46:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:46:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:46:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:46:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:46:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:46:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:46:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:46:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:46:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:46:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:46:07,573 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:46:07,663 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:46:07,665 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:46:08,003 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:46:08,003 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:46:08,217 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:46:08,217 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:46:08,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:46:08 BoogieIcfgContainer [2025-03-17 19:46:08,218 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:46:08,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:46:08,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:46:08,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:46:08,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:46:07" (1/3) ... [2025-03-17 19:46:08,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea7adcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:46:08, skipping insertion in model container [2025-03-17 19:46:08,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:07" (2/3) ... [2025-03-17 19:46:08,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea7adcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:46:08, skipping insertion in model container [2025-03-17 19:46:08,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:46:08" (3/3) ... [2025-03-17 19:46:08,227 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2025-03-17 19:46:08,237 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:46:08,239 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-vector-add.wvr.c that has 4 procedures, 53 locations, 1 initial locations, 7 loop locations, and 14 error locations. [2025-03-17 19:46:08,239 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:46:08,291 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:46:08,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2025-03-17 19:46:08,360 INFO L124 PetriNetUnfolderBase]: 7/56 cut-off events. [2025-03-17 19:46:08,363 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:46:08,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 7/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2025-03-17 19:46:08,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 59 transitions, 139 flow [2025-03-17 19:46:08,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 54 transitions, 123 flow [2025-03-17 19:46:08,374 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:46:08,385 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;@38905d6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:46:08,385 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2025-03-17 19:46:08,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:46:08,388 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:46:08,388 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:46:08,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:08,390 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:46:08,390 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:08,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash 641771, now seen corresponding path program 1 times [2025-03-17 19:46:08,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:08,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494210920] [2025-03-17 19:46:08,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:08,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:08,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:46:08,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:46:08,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:08,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:08,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:08,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494210920] [2025-03-17 19:46:08,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494210920] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:08,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:08,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:46:08,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719700985] [2025-03-17 19:46:08,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:08,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:08,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:08,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:08,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:08,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-03-17 19:46:08,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2025-03-17 19:46:08,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:08,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-03-17 19:46:08,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:08,902 INFO L124 PetriNetUnfolderBase]: 437/799 cut-off events. [2025-03-17 19:46:08,904 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2025-03-17 19:46:08,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 799 events. 437/799 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3642 event pairs, 306 based on Foata normal form. 4/611 useless extension candidates. Maximal degree in co-relation 1301. Up to 640 conditions per place. [2025-03-17 19:46:08,915 INFO L140 encePairwiseOnDemand]: 38/59 looper letters, 40 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2025-03-17 19:46:08,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 253 flow [2025-03-17 19:46:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2025-03-17 19:46:08,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5296610169491526 [2025-03-17 19:46:08,928 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 123 flow. Second operand 4 states and 125 transitions. [2025-03-17 19:46:08,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 253 flow [2025-03-17 19:46:08,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 244 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:46:08,936 INFO L231 Difference]: Finished difference. Result has 58 places, 66 transitions, 230 flow [2025-03-17 19:46:08,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=58, PETRI_TRANSITIONS=66} [2025-03-17 19:46:08,940 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2025-03-17 19:46:08,940 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 66 transitions, 230 flow [2025-03-17 19:46:08,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2025-03-17 19:46:08,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:08,940 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:46:08,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:46:08,940 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:08,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:08,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1939721515, now seen corresponding path program 1 times [2025-03-17 19:46:08,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:08,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316018970] [2025-03-17 19:46:08,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:08,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:08,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:46:08,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:46:08,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:08,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:09,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:09,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316018970] [2025-03-17 19:46:09,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316018970] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:09,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546009351] [2025-03-17 19:46:09,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:09,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:09,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:09,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:09,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:46:09,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:46:09,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:46:09,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:09,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:09,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:46:09,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:09,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:46:09,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546009351] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:09,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:46:09,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:46:09,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457231398] [2025-03-17 19:46:09,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:09,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:46:09,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:09,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:46:09,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:46:09,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-03-17 19:46:09,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 66 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2025-03-17 19:46:09,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:09,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-03-17 19:46:09,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:09,374 INFO L124 PetriNetUnfolderBase]: 437/795 cut-off events. [2025-03-17 19:46:09,374 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2025-03-17 19:46:09,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 795 events. 437/795 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3618 event pairs, 306 based on Foata normal form. 4/614 useless extension candidates. Maximal degree in co-relation 1429. Up to 620 conditions per place. [2025-03-17 19:46:09,379 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 27 selfloop transitions, 22 changer transitions 0/62 dead transitions. [2025-03-17 19:46:09,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 312 flow [2025-03-17 19:46:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:46:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:46:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2025-03-17 19:46:09,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4209039548022599 [2025-03-17 19:46:09,381 INFO L175 Difference]: Start difference. First operand has 58 places, 66 transitions, 230 flow. Second operand 6 states and 149 transitions. [2025-03-17 19:46:09,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 312 flow [2025-03-17 19:46:09,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:46:09,384 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 258 flow [2025-03-17 19:46:09,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2025-03-17 19:46:09,384 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2025-03-17 19:46:09,384 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 258 flow [2025-03-17 19:46:09,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2025-03-17 19:46:09,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:09,385 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:46:09,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:09,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:09,586 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:09,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:09,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1825414, now seen corresponding path program 1 times [2025-03-17 19:46:09,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:09,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139903192] [2025-03-17 19:46:09,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:09,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:09,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:46:09,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:46:09,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:09,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:09,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:09,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139903192] [2025-03-17 19:46:09,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139903192] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:09,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953344624] [2025-03-17 19:46:09,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:09,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:09,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:09,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:09,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:46:09,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:46:09,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:46:09,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:09,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:09,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:46:09,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:09,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:09,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:09,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953344624] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:09,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:09,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:46:09,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574455343] [2025-03-17 19:46:09,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:09,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:46:09,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:09,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:46:09,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:46:09,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-03-17 19:46:09,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 258 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2025-03-17 19:46:09,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:09,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-03-17 19:46:09,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:10,081 INFO L124 PetriNetUnfolderBase]: 449/843 cut-off events. [2025-03-17 19:46:10,081 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2025-03-17 19:46:10,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1713 conditions, 843 events. 449/843 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4037 event pairs, 306 based on Foata normal form. 12/671 useless extension candidates. Maximal degree in co-relation 1431. Up to 639 conditions per place. [2025-03-17 19:46:10,086 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 36 selfloop transitions, 49 changer transitions 0/98 dead transitions. [2025-03-17 19:46:10,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 98 transitions, 662 flow [2025-03-17 19:46:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:46:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:46:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2025-03-17 19:46:10,089 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43559322033898307 [2025-03-17 19:46:10,089 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 258 flow. Second operand 10 states and 257 transitions. [2025-03-17 19:46:10,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 98 transitions, 662 flow [2025-03-17 19:46:10,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 554 flow, removed 20 selfloop flow, removed 5 redundant places. [2025-03-17 19:46:10,094 INFO L231 Difference]: Finished difference. Result has 66 places, 98 transitions, 548 flow [2025-03-17 19:46:10,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=548, PETRI_PLACES=66, PETRI_TRANSITIONS=98} [2025-03-17 19:46:10,094 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2025-03-17 19:46:10,094 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 98 transitions, 548 flow [2025-03-17 19:46:10,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2025-03-17 19:46:10,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:10,095 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:10,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:10,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-17 19:46:10,295 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:10,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:10,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1659495384, now seen corresponding path program 1 times [2025-03-17 19:46:10,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:10,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461534768] [2025-03-17 19:46:10,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:10,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:10,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:46:10,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:46:10,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:10,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:10,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:10,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461534768] [2025-03-17 19:46:10,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461534768] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:10,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:10,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:46:10,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815387761] [2025-03-17 19:46:10,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:10,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:10,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:10,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:10,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:10,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-17 19:46:10,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 98 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:10,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:10,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-17 19:46:10,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:10,577 INFO L124 PetriNetUnfolderBase]: 883/1519 cut-off events. [2025-03-17 19:46:10,577 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2025-03-17 19:46:10,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3054 conditions, 1519 events. 883/1519 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7519 event pairs, 466 based on Foata normal form. 42/1215 useless extension candidates. Maximal degree in co-relation 2925. Up to 1001 conditions per place. [2025-03-17 19:46:10,582 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 108 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2025-03-17 19:46:10,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 127 transitions, 836 flow [2025-03-17 19:46:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:10,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2025-03-17 19:46:10,584 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2025-03-17 19:46:10,584 INFO L175 Difference]: Start difference. First operand has 66 places, 98 transitions, 548 flow. Second operand 4 states and 154 transitions. [2025-03-17 19:46:10,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 127 transitions, 836 flow [2025-03-17 19:46:10,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 127 transitions, 786 flow, removed 12 selfloop flow, removed 2 redundant places. [2025-03-17 19:46:10,587 INFO L231 Difference]: Finished difference. Result has 69 places, 101 transitions, 527 flow [2025-03-17 19:46:10,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=527, PETRI_PLACES=69, PETRI_TRANSITIONS=101} [2025-03-17 19:46:10,587 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2025-03-17 19:46:10,588 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 101 transitions, 527 flow [2025-03-17 19:46:10,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:10,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:10,589 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:10,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:46:10,589 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:10,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:10,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1297593592, now seen corresponding path program 1 times [2025-03-17 19:46:10,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:10,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778307090] [2025-03-17 19:46:10,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:10,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:10,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:46:10,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:46:10,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:10,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:10,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778307090] [2025-03-17 19:46:10,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778307090] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:10,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:10,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:46:10,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632693049] [2025-03-17 19:46:10,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:10,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:10,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:10,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:10,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:10,681 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-17 19:46:10,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 101 transitions, 527 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:10,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:10,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-17 19:46:10,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:10,906 INFO L124 PetriNetUnfolderBase]: 1399/2287 cut-off events. [2025-03-17 19:46:10,906 INFO L125 PetriNetUnfolderBase]: For 935/1007 co-relation queries the response was YES. [2025-03-17 19:46:10,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5374 conditions, 2287 events. 1399/2287 cut-off events. For 935/1007 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11815 event pairs, 724 based on Foata normal form. 64/1931 useless extension candidates. Maximal degree in co-relation 5249. Up to 1517 conditions per place. [2025-03-17 19:46:10,916 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 115 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2025-03-17 19:46:10,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 134 transitions, 875 flow [2025-03-17 19:46:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2025-03-17 19:46:10,917 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2025-03-17 19:46:10,917 INFO L175 Difference]: Start difference. First operand has 69 places, 101 transitions, 527 flow. Second operand 4 states and 152 transitions. [2025-03-17 19:46:10,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 134 transitions, 875 flow [2025-03-17 19:46:10,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 134 transitions, 866 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:10,922 INFO L231 Difference]: Finished difference. Result has 73 places, 104 transitions, 553 flow [2025-03-17 19:46:10,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=553, PETRI_PLACES=73, PETRI_TRANSITIONS=104} [2025-03-17 19:46:10,923 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2025-03-17 19:46:10,923 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 104 transitions, 553 flow [2025-03-17 19:46:10,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:10,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:10,923 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:10,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:46:10,923 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:10,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:10,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1340957912, now seen corresponding path program 1 times [2025-03-17 19:46:10,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:10,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908744898] [2025-03-17 19:46:10,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:10,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:10,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:46:10,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:46:10,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:10,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:11,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:11,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908744898] [2025-03-17 19:46:11,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908744898] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:11,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:11,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:46:11,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199391489] [2025-03-17 19:46:11,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:11,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:46:11,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:11,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:46:11,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:46:11,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-03-17 19:46:11,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 104 transitions, 553 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:11,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:11,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-03-17 19:46:11,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:11,307 INFO L124 PetriNetUnfolderBase]: 1552/2880 cut-off events. [2025-03-17 19:46:11,307 INFO L125 PetriNetUnfolderBase]: For 1649/1667 co-relation queries the response was YES. [2025-03-17 19:46:11,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7326 conditions, 2880 events. 1552/2880 cut-off events. For 1649/1667 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16208 event pairs, 952 based on Foata normal form. 62/2567 useless extension candidates. Maximal degree in co-relation 7113. Up to 1496 conditions per place. [2025-03-17 19:46:11,323 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 134 selfloop transitions, 35 changer transitions 0/186 dead transitions. [2025-03-17 19:46:11,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 186 transitions, 1301 flow [2025-03-17 19:46:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:46:11,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:46:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2025-03-17 19:46:11,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6751412429378532 [2025-03-17 19:46:11,325 INFO L175 Difference]: Start difference. First operand has 73 places, 104 transitions, 553 flow. Second operand 6 states and 239 transitions. [2025-03-17 19:46:11,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 186 transitions, 1301 flow [2025-03-17 19:46:11,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 186 transitions, 1292 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:11,331 INFO L231 Difference]: Finished difference. Result has 80 places, 120 transitions, 758 flow [2025-03-17 19:46:11,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=758, PETRI_PLACES=80, PETRI_TRANSITIONS=120} [2025-03-17 19:46:11,332 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2025-03-17 19:46:11,332 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 120 transitions, 758 flow [2025-03-17 19:46:11,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:11,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:11,332 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:11,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:46:11,333 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:11,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:11,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1424397842, now seen corresponding path program 1 times [2025-03-17 19:46:11,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:11,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956145956] [2025-03-17 19:46:11,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:11,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:11,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:46:11,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:46:11,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:11,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:11,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:11,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956145956] [2025-03-17 19:46:11,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956145956] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:11,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:11,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:46:11,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496539883] [2025-03-17 19:46:11,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:11,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:46:11,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:11,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:46:11,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:46:11,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-17 19:46:11,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 120 transitions, 758 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2025-03-17 19:46:11,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:11,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-17 19:46:11,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:11,698 INFO L124 PetriNetUnfolderBase]: 1868/3076 cut-off events. [2025-03-17 19:46:11,699 INFO L125 PetriNetUnfolderBase]: For 2806/2993 co-relation queries the response was YES. [2025-03-17 19:46:11,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8516 conditions, 3076 events. 1868/3076 cut-off events. For 2806/2993 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 15268 event pairs, 572 based on Foata normal form. 122/2756 useless extension candidates. Maximal degree in co-relation 8293. Up to 1144 conditions per place. [2025-03-17 19:46:11,715 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 132 selfloop transitions, 10 changer transitions 0/157 dead transitions. [2025-03-17 19:46:11,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 157 transitions, 1220 flow [2025-03-17 19:46:11,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:46:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:46:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2025-03-17 19:46:11,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5661016949152542 [2025-03-17 19:46:11,716 INFO L175 Difference]: Start difference. First operand has 80 places, 120 transitions, 758 flow. Second operand 5 states and 167 transitions. [2025-03-17 19:46:11,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 157 transitions, 1220 flow [2025-03-17 19:46:11,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 157 transitions, 1214 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-03-17 19:46:11,728 INFO L231 Difference]: Finished difference. Result has 83 places, 119 transitions, 770 flow [2025-03-17 19:46:11,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=770, PETRI_PLACES=83, PETRI_TRANSITIONS=119} [2025-03-17 19:46:11,729 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 26 predicate places. [2025-03-17 19:46:11,729 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 119 transitions, 770 flow [2025-03-17 19:46:11,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2025-03-17 19:46:11,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:11,729 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:11,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:46:11,729 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:11,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:11,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1206660760, now seen corresponding path program 1 times [2025-03-17 19:46:11,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:11,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789866417] [2025-03-17 19:46:11,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:11,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:11,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:46:11,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:46:11,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:11,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:11,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:11,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789866417] [2025-03-17 19:46:11,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789866417] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:11,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:11,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:46:11,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235390628] [2025-03-17 19:46:11,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:11,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:46:11,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:11,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:46:11,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:46:11,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-17 19:46:11,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 119 transitions, 770 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2025-03-17 19:46:11,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:11,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-17 19:46:11,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:12,140 INFO L124 PetriNetUnfolderBase]: 1770/3091 cut-off events. [2025-03-17 19:46:12,140 INFO L125 PetriNetUnfolderBase]: For 3154/3199 co-relation queries the response was YES. [2025-03-17 19:46:12,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8890 conditions, 3091 events. 1770/3091 cut-off events. For 3154/3199 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16241 event pairs, 1160 based on Foata normal form. 43/2819 useless extension candidates. Maximal degree in co-relation 8664. Up to 1793 conditions per place. [2025-03-17 19:46:12,159 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 125 selfloop transitions, 35 changer transitions 6/181 dead transitions. [2025-03-17 19:46:12,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 181 transitions, 1435 flow [2025-03-17 19:46:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:46:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:46:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2025-03-17 19:46:12,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.632768361581921 [2025-03-17 19:46:12,162 INFO L175 Difference]: Start difference. First operand has 83 places, 119 transitions, 770 flow. Second operand 6 states and 224 transitions. [2025-03-17 19:46:12,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 181 transitions, 1435 flow [2025-03-17 19:46:12,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 181 transitions, 1399 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:46:12,171 INFO L231 Difference]: Finished difference. Result has 86 places, 121 transitions, 847 flow [2025-03-17 19:46:12,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=847, PETRI_PLACES=86, PETRI_TRANSITIONS=121} [2025-03-17 19:46:12,172 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2025-03-17 19:46:12,172 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 121 transitions, 847 flow [2025-03-17 19:46:12,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2025-03-17 19:46:12,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:12,172 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:12,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:46:12,172 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:12,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:12,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1905643823, now seen corresponding path program 1 times [2025-03-17 19:46:12,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:12,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329699193] [2025-03-17 19:46:12,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:12,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:12,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:46:12,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:46:12,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:12,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:12,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:12,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329699193] [2025-03-17 19:46:12,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329699193] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:12,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:12,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:46:12,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109407212] [2025-03-17 19:46:12,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:12,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:46:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:12,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:46:12,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:46:12,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-03-17 19:46:12,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 121 transitions, 847 flow. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:12,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:12,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-03-17 19:46:12,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:12,568 INFO L124 PetriNetUnfolderBase]: 1274/2326 cut-off events. [2025-03-17 19:46:12,569 INFO L125 PetriNetUnfolderBase]: For 2312/2328 co-relation queries the response was YES. [2025-03-17 19:46:12,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6589 conditions, 2326 events. 1274/2326 cut-off events. For 2312/2328 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12459 event pairs, 824 based on Foata normal form. 34/2220 useless extension candidates. Maximal degree in co-relation 6356. Up to 1496 conditions per place. [2025-03-17 19:46:12,577 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 95 selfloop transitions, 31 changer transitions 32/174 dead transitions. [2025-03-17 19:46:12,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 174 transitions, 1443 flow [2025-03-17 19:46:12,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:46:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:46:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 258 transitions. [2025-03-17 19:46:12,580 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6246973365617433 [2025-03-17 19:46:12,580 INFO L175 Difference]: Start difference. First operand has 86 places, 121 transitions, 847 flow. Second operand 7 states and 258 transitions. [2025-03-17 19:46:12,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 174 transitions, 1443 flow [2025-03-17 19:46:12,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 174 transitions, 1390 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:46:12,588 INFO L231 Difference]: Finished difference. Result has 92 places, 115 transitions, 832 flow [2025-03-17 19:46:12,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=832, PETRI_PLACES=92, PETRI_TRANSITIONS=115} [2025-03-17 19:46:12,589 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2025-03-17 19:46:12,589 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 115 transitions, 832 flow [2025-03-17 19:46:12,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:12,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:12,589 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:46:12,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:46:12,589 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:12,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:12,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1893997370, now seen corresponding path program 2 times [2025-03-17 19:46:12,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:12,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931381080] [2025-03-17 19:46:12,590 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:12,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:12,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:46:12,604 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:46:12,604 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:12,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:46:12,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:12,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931381080] [2025-03-17 19:46:12,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931381080] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:12,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594488899] [2025-03-17 19:46:12,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:12,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:12,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:12,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:12,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:46:12,669 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:46:12,676 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:46:12,676 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:12,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:12,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:46:12,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:46:12,699 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:46:12,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594488899] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:12,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:12,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:46:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001350071] [2025-03-17 19:46:12,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:12,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:12,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:12,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:12,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:12,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-03-17 19:46:12,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 115 transitions, 832 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-17 19:46:12,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:12,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-03-17 19:46:12,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:12,886 INFO L124 PetriNetUnfolderBase]: 1084/2010 cut-off events. [2025-03-17 19:46:12,887 INFO L125 PetriNetUnfolderBase]: For 2244/2260 co-relation queries the response was YES. [2025-03-17 19:46:12,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5801 conditions, 2010 events. 1084/2010 cut-off events. For 2244/2260 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11106 event pairs, 724 based on Foata normal form. 1/1873 useless extension candidates. Maximal degree in co-relation 5564. Up to 1551 conditions per place. [2025-03-17 19:46:12,896 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 86 selfloop transitions, 16 changer transitions 0/114 dead transitions. [2025-03-17 19:46:12,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 114 transitions, 1026 flow [2025-03-17 19:46:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-03-17 19:46:12,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4279661016949153 [2025-03-17 19:46:12,897 INFO L175 Difference]: Start difference. First operand has 92 places, 115 transitions, 832 flow. Second operand 4 states and 101 transitions. [2025-03-17 19:46:12,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 114 transitions, 1026 flow [2025-03-17 19:46:12,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 114 transitions, 913 flow, removed 9 selfloop flow, removed 11 redundant places. [2025-03-17 19:46:12,904 INFO L231 Difference]: Finished difference. Result has 79 places, 114 transitions, 741 flow [2025-03-17 19:46:12,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=741, PETRI_PLACES=79, PETRI_TRANSITIONS=114} [2025-03-17 19:46:12,904 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2025-03-17 19:46:12,905 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 114 transitions, 741 flow [2025-03-17 19:46:12,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-17 19:46:12,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:12,905 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-17 19:46:12,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:13,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:13,106 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:13,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2004021801, now seen corresponding path program 1 times [2025-03-17 19:46:13,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:13,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036604603] [2025-03-17 19:46:13,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:13,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:13,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:46:13,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:46:13,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:13,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-17 19:46:13,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:13,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036604603] [2025-03-17 19:46:13,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036604603] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:13,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:13,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:46:13,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626530937] [2025-03-17 19:46:13,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:13,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:13,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:13,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:13,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:13,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-03-17 19:46:13,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 114 transitions, 741 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2025-03-17 19:46:13,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:13,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-03-17 19:46:13,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:13,310 INFO L124 PetriNetUnfolderBase]: 1073/1954 cut-off events. [2025-03-17 19:46:13,310 INFO L125 PetriNetUnfolderBase]: For 1089/1103 co-relation queries the response was YES. [2025-03-17 19:46:13,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4946 conditions, 1954 events. 1073/1954 cut-off events. For 1089/1103 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10853 event pairs, 724 based on Foata normal form. 3/1740 useless extension candidates. Maximal degree in co-relation 4827. Up to 1496 conditions per place. [2025-03-17 19:46:13,317 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 66 selfloop transitions, 17 changer transitions 5/103 dead transitions. [2025-03-17 19:46:13,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 103 transitions, 815 flow [2025-03-17 19:46:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2025-03-17 19:46:13,318 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.614406779661017 [2025-03-17 19:46:13,319 INFO L175 Difference]: Start difference. First operand has 79 places, 114 transitions, 741 flow. Second operand 4 states and 145 transitions. [2025-03-17 19:46:13,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 103 transitions, 815 flow [2025-03-17 19:46:13,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 758 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-17 19:46:13,322 INFO L231 Difference]: Finished difference. Result has 77 places, 98 transitions, 595 flow [2025-03-17 19:46:13,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=595, PETRI_PLACES=77, PETRI_TRANSITIONS=98} [2025-03-17 19:46:13,322 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2025-03-17 19:46:13,322 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 98 transitions, 595 flow [2025-03-17 19:46:13,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2025-03-17 19:46:13,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:13,323 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:13,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:46:13,323 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:13,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:13,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1456480279, now seen corresponding path program 1 times [2025-03-17 19:46:13,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:13,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362403492] [2025-03-17 19:46:13,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:13,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:13,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:46:13,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:46:13,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:13,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 19:46:13,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362403492] [2025-03-17 19:46:13,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362403492] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752457302] [2025-03-17 19:46:13,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:13,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:13,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:13,438 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:13,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:46:13,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:46:13,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:46:13,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:13,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:13,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 19:46:13,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 19:46:13,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-17 19:46:13,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752457302] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:13,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:13,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-03-17 19:46:13,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208115177] [2025-03-17 19:46:13,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:13,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 19:46:13,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:13,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 19:46:13,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2025-03-17 19:46:13,756 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-03-17 19:46:13,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 98 transitions, 595 flow. Second operand has 19 states, 19 states have (on average 17.210526315789473) internal successors, (327), 19 states have internal predecessors, (327), 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) [2025-03-17 19:46:13,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:13,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-03-17 19:46:13,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:14,191 INFO L124 PetriNetUnfolderBase]: 2125/3785 cut-off events. [2025-03-17 19:46:14,191 INFO L125 PetriNetUnfolderBase]: For 2091/2186 co-relation queries the response was YES. [2025-03-17 19:46:14,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9495 conditions, 3785 events. 2125/3785 cut-off events. For 2091/2186 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 21210 event pairs, 1448 based on Foata normal form. 3/3365 useless extension candidates. Maximal degree in co-relation 9362. Up to 1475 conditions per place. [2025-03-17 19:46:14,211 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 62 selfloop transitions, 59 changer transitions 0/133 dead transitions. [2025-03-17 19:46:14,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 133 transitions, 1006 flow [2025-03-17 19:46:14,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:46:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:46:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2025-03-17 19:46:14,214 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42033898305084744 [2025-03-17 19:46:14,214 INFO L175 Difference]: Start difference. First operand has 77 places, 98 transitions, 595 flow. Second operand 10 states and 248 transitions. [2025-03-17 19:46:14,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 133 transitions, 1006 flow [2025-03-17 19:46:14,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 133 transitions, 884 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-03-17 19:46:14,220 INFO L231 Difference]: Finished difference. Result has 79 places, 107 transitions, 682 flow [2025-03-17 19:46:14,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=682, PETRI_PLACES=79, PETRI_TRANSITIONS=107} [2025-03-17 19:46:14,221 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2025-03-17 19:46:14,221 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 107 transitions, 682 flow [2025-03-17 19:46:14,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.210526315789473) internal successors, (327), 19 states have internal predecessors, (327), 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) [2025-03-17 19:46:14,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:14,222 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2025-03-17 19:46:14,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:14,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:14,422 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:14,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:14,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1173939671, now seen corresponding path program 2 times [2025-03-17 19:46:14,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:14,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322793583] [2025-03-17 19:46:14,423 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:14,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:14,430 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-17 19:46:14,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-03-17 19:46:14,437 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:14,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-17 19:46:14,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:14,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322793583] [2025-03-17 19:46:14,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322793583] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:14,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403700891] [2025-03-17 19:46:14,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:14,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:14,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:14,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:14,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:46:14,526 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-17 19:46:14,534 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-03-17 19:46:14,534 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:14,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:14,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:46:14,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-17 19:46:14,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-17 19:46:14,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403700891] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:14,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:14,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-17 19:46:14,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080262559] [2025-03-17 19:46:14,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:14,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:46:14,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:14,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:46:14,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:46:14,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2025-03-17 19:46:14,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 107 transitions, 682 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2025-03-17 19:46:14,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:14,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2025-03-17 19:46:14,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:14,829 INFO L124 PetriNetUnfolderBase]: 2125/3827 cut-off events. [2025-03-17 19:46:14,829 INFO L125 PetriNetUnfolderBase]: For 2091/2119 co-relation queries the response was YES. [2025-03-17 19:46:14,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9551 conditions, 3827 events. 2125/3827 cut-off events. For 2091/2119 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 22031 event pairs, 1448 based on Foata normal form. 3/3393 useless extension candidates. Maximal degree in co-relation 9427. Up to 2915 conditions per place. [2025-03-17 19:46:14,848 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 40 selfloop transitions, 52 changer transitions 0/104 dead transitions. [2025-03-17 19:46:14,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 104 transitions, 836 flow [2025-03-17 19:46:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:46:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:46:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2025-03-17 19:46:14,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39322033898305087 [2025-03-17 19:46:14,851 INFO L175 Difference]: Start difference. First operand has 79 places, 107 transitions, 682 flow. Second operand 5 states and 116 transitions. [2025-03-17 19:46:14,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 104 transitions, 836 flow [2025-03-17 19:46:14,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 104 transitions, 722 flow, removed 4 selfloop flow, removed 7 redundant places. [2025-03-17 19:46:14,856 INFO L231 Difference]: Finished difference. Result has 73 places, 104 transitions, 642 flow [2025-03-17 19:46:14,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=642, PETRI_PLACES=73, PETRI_TRANSITIONS=104} [2025-03-17 19:46:14,857 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2025-03-17 19:46:14,857 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 104 transitions, 642 flow [2025-03-17 19:46:14,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2025-03-17 19:46:14,857 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:14,857 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:14,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 19:46:15,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-17 19:46:15,062 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:15,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:15,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1825927591, now seen corresponding path program 1 times [2025-03-17 19:46:15,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:15,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306533623] [2025-03-17 19:46:15,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:15,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:15,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:46:15,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:46:15,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:15,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:46:15,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:15,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306533623] [2025-03-17 19:46:15,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306533623] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:15,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291153726] [2025-03-17 19:46:15,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:15,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:15,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:15,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:15,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 19:46:15,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 19:46:15,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 19:46:15,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:15,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:15,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 19:46:15,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:46:15,301 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:46:15,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291153726] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:15,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:15,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-03-17 19:46:15,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561370982] [2025-03-17 19:46:15,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:15,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 19:46:15,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:15,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 19:46:15,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-03-17 19:46:15,557 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 59 [2025-03-17 19:46:15,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 104 transitions, 642 flow. Second operand has 19 states, 19 states have (on average 16.42105263157895) internal successors, (312), 19 states have internal predecessors, (312), 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) [2025-03-17 19:46:15,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:15,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 59 [2025-03-17 19:46:15,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:16,323 INFO L124 PetriNetUnfolderBase]: 2213/3658 cut-off events. [2025-03-17 19:46:16,323 INFO L125 PetriNetUnfolderBase]: For 1640/1754 co-relation queries the response was YES. [2025-03-17 19:46:16,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9363 conditions, 3658 events. 2213/3658 cut-off events. For 1640/1754 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 18800 event pairs, 536 based on Foata normal form. 62/3271 useless extension candidates. Maximal degree in co-relation 5591. Up to 825 conditions per place. [2025-03-17 19:46:16,339 INFO L140 encePairwiseOnDemand]: 41/59 looper letters, 158 selfloop transitions, 71 changer transitions 0/239 dead transitions. [2025-03-17 19:46:16,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 239 transitions, 1535 flow [2025-03-17 19:46:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 19:46:16,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-17 19:46:16,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 418 transitions. [2025-03-17 19:46:16,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4167497507477567 [2025-03-17 19:46:16,341 INFO L175 Difference]: Start difference. First operand has 73 places, 104 transitions, 642 flow. Second operand 17 states and 418 transitions. [2025-03-17 19:46:16,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 239 transitions, 1535 flow [2025-03-17 19:46:16,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 239 transitions, 1436 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:46:16,348 INFO L231 Difference]: Finished difference. Result has 85 places, 108 transitions, 703 flow [2025-03-17 19:46:16,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=703, PETRI_PLACES=85, PETRI_TRANSITIONS=108} [2025-03-17 19:46:16,348 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2025-03-17 19:46:16,348 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 108 transitions, 703 flow [2025-03-17 19:46:16,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.42105263157895) internal successors, (312), 19 states have internal predecessors, (312), 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) [2025-03-17 19:46:16,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:16,349 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:16,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:16,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:16,553 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:16,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:16,553 INFO L85 PathProgramCache]: Analyzing trace with hash -992732791, now seen corresponding path program 1 times [2025-03-17 19:46:16,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:16,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814883044] [2025-03-17 19:46:16,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:16,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:16,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 19:46:16,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 19:46:16,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:16,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:46:16,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814883044] [2025-03-17 19:46:16,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814883044] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345550707] [2025-03-17 19:46:16,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:16,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:16,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:16,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:16,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 19:46:16,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 19:46:16,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 19:46:16,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:16,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:16,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 19:46:16,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:46:16,872 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:46:16,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345550707] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:16,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:16,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 18 [2025-03-17 19:46:16,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280709694] [2025-03-17 19:46:16,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:16,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 19:46:16,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:16,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 19:46:16,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2025-03-17 19:46:17,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 59 [2025-03-17 19:46:17,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 108 transitions, 703 flow. Second operand has 20 states, 20 states have (on average 16.75) internal successors, (335), 20 states have internal predecessors, (335), 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) [2025-03-17 19:46:17,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:17,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 59 [2025-03-17 19:46:17,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:17,669 INFO L124 PetriNetUnfolderBase]: 2407/3899 cut-off events. [2025-03-17 19:46:17,669 INFO L125 PetriNetUnfolderBase]: For 3892/4005 co-relation queries the response was YES. [2025-03-17 19:46:17,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10812 conditions, 3899 events. 2407/3899 cut-off events. For 3892/4005 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 19295 event pairs, 1001 based on Foata normal form. 0/3398 useless extension candidates. Maximal degree in co-relation 6741. Up to 1348 conditions per place. [2025-03-17 19:46:17,711 INFO L140 encePairwiseOnDemand]: 41/59 looper letters, 123 selfloop transitions, 47 changer transitions 12/192 dead transitions. [2025-03-17 19:46:17,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 192 transitions, 1433 flow [2025-03-17 19:46:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 19:46:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 19:46:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 340 transitions. [2025-03-17 19:46:17,714 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.384180790960452 [2025-03-17 19:46:17,714 INFO L175 Difference]: Start difference. First operand has 85 places, 108 transitions, 703 flow. Second operand 15 states and 340 transitions. [2025-03-17 19:46:17,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 192 transitions, 1433 flow [2025-03-17 19:46:17,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 192 transitions, 1215 flow, removed 9 selfloop flow, removed 12 redundant places. [2025-03-17 19:46:17,720 INFO L231 Difference]: Finished difference. Result has 86 places, 112 transitions, 656 flow [2025-03-17 19:46:17,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=656, PETRI_PLACES=86, PETRI_TRANSITIONS=112} [2025-03-17 19:46:17,720 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2025-03-17 19:46:17,720 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 112 transitions, 656 flow [2025-03-17 19:46:17,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.75) internal successors, (335), 20 states have internal predecessors, (335), 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) [2025-03-17 19:46:17,721 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:17,721 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:17,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 19:46:17,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:17,925 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:17,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash -293749728, now seen corresponding path program 1 times [2025-03-17 19:46:17,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:17,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347691737] [2025-03-17 19:46:17,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:17,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:17,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 19:46:17,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 19:46:17,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:17,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:46:17,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:17,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347691737] [2025-03-17 19:46:17,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347691737] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:17,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863996777] [2025-03-17 19:46:17,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:17,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:17,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:17,994 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:17,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 19:46:18,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 19:46:18,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 19:46:18,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:18,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:18,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:46:18,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:46:18,081 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:46:18,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863996777] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:18,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:46:18,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:46:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087978850] [2025-03-17 19:46:18,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:18,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:46:18,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:18,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:46:18,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:46:18,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-17 19:46:18,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 112 transitions, 656 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:18,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:18,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-17 19:46:18,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:18,419 INFO L124 PetriNetUnfolderBase]: 2758/4281 cut-off events. [2025-03-17 19:46:18,420 INFO L125 PetriNetUnfolderBase]: For 1996/2044 co-relation queries the response was YES. [2025-03-17 19:46:18,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11648 conditions, 4281 events. 2758/4281 cut-off events. For 1996/2044 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 20926 event pairs, 462 based on Foata normal form. 148/3745 useless extension candidates. Maximal degree in co-relation 7372. Up to 1147 conditions per place. [2025-03-17 19:46:18,432 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 200 selfloop transitions, 7 changer transitions 0/215 dead transitions. [2025-03-17 19:46:18,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 215 transitions, 1438 flow [2025-03-17 19:46:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:46:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:46:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2025-03-17 19:46:18,433 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129943502824858 [2025-03-17 19:46:18,433 INFO L175 Difference]: Start difference. First operand has 86 places, 112 transitions, 656 flow. Second operand 6 states and 217 transitions. [2025-03-17 19:46:18,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 215 transitions, 1438 flow [2025-03-17 19:46:18,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 215 transitions, 1383 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-17 19:46:18,439 INFO L231 Difference]: Finished difference. Result has 82 places, 111 transitions, 611 flow [2025-03-17 19:46:18,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=611, PETRI_PLACES=82, PETRI_TRANSITIONS=111} [2025-03-17 19:46:18,440 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2025-03-17 19:46:18,440 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 111 transitions, 611 flow [2025-03-17 19:46:18,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:46:18,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:18,440 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:18,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:18,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-17 19:46:18,641 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:18,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash -516306365, now seen corresponding path program 1 times [2025-03-17 19:46:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:18,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902527642] [2025-03-17 19:46:18,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:18,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:18,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 19:46:18,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 19:46:18,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:18,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:46:18,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:18,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902527642] [2025-03-17 19:46:18,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902527642] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:18,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906234911] [2025-03-17 19:46:18,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:18,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:18,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:18,725 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:18,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 19:46:18,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 19:46:18,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 19:46:18,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:18,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:18,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:46:18,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:46:18,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 19:46:18,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906234911] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:18,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:18,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:46:18,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114191206] [2025-03-17 19:46:18,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:18,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:46:18,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:18,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:46:18,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:46:18,844 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-17 19:46:18,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 111 transitions, 611 flow. Second operand has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 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) [2025-03-17 19:46:18,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:18,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-17 19:46:18,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:19,431 INFO L124 PetriNetUnfolderBase]: 5404/8284 cut-off events. [2025-03-17 19:46:19,431 INFO L125 PetriNetUnfolderBase]: For 6289/6379 co-relation queries the response was YES. [2025-03-17 19:46:19,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24530 conditions, 8284 events. 5404/8284 cut-off events. For 6289/6379 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 42825 event pairs, 1384 based on Foata normal form. 444/7418 useless extension candidates. Maximal degree in co-relation 15689. Up to 3284 conditions per place. [2025-03-17 19:46:19,469 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 307 selfloop transitions, 13 changer transitions 0/328 dead transitions. [2025-03-17 19:46:19,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 328 transitions, 2049 flow [2025-03-17 19:46:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:46:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:46:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 364 transitions. [2025-03-17 19:46:19,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6169491525423729 [2025-03-17 19:46:19,471 INFO L175 Difference]: Start difference. First operand has 82 places, 111 transitions, 611 flow. Second operand 10 states and 364 transitions. [2025-03-17 19:46:19,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 328 transitions, 2049 flow [2025-03-17 19:46:19,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 328 transitions, 2003 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-17 19:46:19,482 INFO L231 Difference]: Finished difference. Result has 89 places, 120 transitions, 663 flow [2025-03-17 19:46:19,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=663, PETRI_PLACES=89, PETRI_TRANSITIONS=120} [2025-03-17 19:46:19,482 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2025-03-17 19:46:19,483 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 120 transitions, 663 flow [2025-03-17 19:46:19,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 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) [2025-03-17 19:46:19,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:19,483 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:19,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 19:46:19,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-17 19:46:19,684 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:19,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1098138404, now seen corresponding path program 2 times [2025-03-17 19:46:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:19,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990264378] [2025-03-17 19:46:19,684 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:19,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:19,692 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-17 19:46:19,698 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 36 statements. [2025-03-17 19:46:19,700 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:19,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-17 19:46:19,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990264378] [2025-03-17 19:46:19,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990264378] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893698473] [2025-03-17 19:46:19,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:19,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:19,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:19,730 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:19,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 19:46:19,788 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-17 19:46:19,803 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 36 statements. [2025-03-17 19:46:19,804 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:19,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:19,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:46:19,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-17 19:46:19,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-17 19:46:19,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893698473] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:19,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:19,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:46:19,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544489337] [2025-03-17 19:46:19,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:19,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:19,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:19,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:19,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:19,882 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-17 19:46:19,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 120 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2025-03-17 19:46:19,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:19,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-17 19:46:19,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:20,339 INFO L124 PetriNetUnfolderBase]: 5037/7924 cut-off events. [2025-03-17 19:46:20,339 INFO L125 PetriNetUnfolderBase]: For 9846/9890 co-relation queries the response was YES. [2025-03-17 19:46:20,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22653 conditions, 7924 events. 5037/7924 cut-off events. For 9846/9890 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 41476 event pairs, 1988 based on Foata normal form. 148/7260 useless extension candidates. Maximal degree in co-relation 16318. Up to 4313 conditions per place. [2025-03-17 19:46:20,362 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 89 selfloop transitions, 11 changer transitions 37/145 dead transitions. [2025-03-17 19:46:20,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 145 transitions, 1020 flow [2025-03-17 19:46:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:20,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2025-03-17 19:46:20,363 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5635593220338984 [2025-03-17 19:46:20,363 INFO L175 Difference]: Start difference. First operand has 89 places, 120 transitions, 663 flow. Second operand 4 states and 133 transitions. [2025-03-17 19:46:20,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 145 transitions, 1020 flow [2025-03-17 19:46:20,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 145 transitions, 999 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-03-17 19:46:20,376 INFO L231 Difference]: Finished difference. Result has 85 places, 94 transitions, 526 flow [2025-03-17 19:46:20,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=526, PETRI_PLACES=85, PETRI_TRANSITIONS=94} [2025-03-17 19:46:20,376 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2025-03-17 19:46:20,376 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 94 transitions, 526 flow [2025-03-17 19:46:20,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2025-03-17 19:46:20,376 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:20,377 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:20,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:20,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-17 19:46:20,581 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:20,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash -985033964, now seen corresponding path program 1 times [2025-03-17 19:46:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506386721] [2025-03-17 19:46:20,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:20,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:20,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 19:46:20,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 19:46:20,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:20,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-17 19:46:20,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:20,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506386721] [2025-03-17 19:46:20,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506386721] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:20,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668949936] [2025-03-17 19:46:20,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:20,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:20,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:20,663 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:20,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 19:46:20,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 19:46:20,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 19:46:20,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:20,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:20,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:46:20,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-17 19:46:20,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-17 19:46:20,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668949936] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:20,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:20,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:46:20,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362335443] [2025-03-17 19:46:20,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:20,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:46:20,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:20,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:46:20,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:46:20,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-17 19:46:20,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 94 transitions, 526 flow. Second operand has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 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) [2025-03-17 19:46:20,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:20,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-17 19:46:20,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:21,380 INFO L124 PetriNetUnfolderBase]: 5077/7766 cut-off events. [2025-03-17 19:46:21,380 INFO L125 PetriNetUnfolderBase]: For 9911/9911 co-relation queries the response was YES. [2025-03-17 19:46:21,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22574 conditions, 7766 events. 5077/7766 cut-off events. For 9911/9911 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 41389 event pairs, 1039 based on Foata normal form. 438/7624 useless extension candidates. Maximal degree in co-relation 22373. Up to 2327 conditions per place. [2025-03-17 19:46:21,413 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 300 selfloop transitions, 9 changer transitions 0/316 dead transitions. [2025-03-17 19:46:21,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 316 transitions, 2176 flow [2025-03-17 19:46:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:46:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:46:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 366 transitions. [2025-03-17 19:46:21,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6203389830508474 [2025-03-17 19:46:21,415 INFO L175 Difference]: Start difference. First operand has 85 places, 94 transitions, 526 flow. Second operand 10 states and 366 transitions. [2025-03-17 19:46:21,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 316 transitions, 2176 flow [2025-03-17 19:46:21,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 316 transitions, 1953 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-17 19:46:21,423 INFO L231 Difference]: Finished difference. Result has 78 places, 100 transitions, 545 flow [2025-03-17 19:46:21,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=545, PETRI_PLACES=78, PETRI_TRANSITIONS=100} [2025-03-17 19:46:21,424 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 21 predicate places. [2025-03-17 19:46:21,424 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 100 transitions, 545 flow [2025-03-17 19:46:21,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.25) internal successors, (291), 12 states have internal predecessors, (291), 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) [2025-03-17 19:46:21,424 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:21,424 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:21,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:21,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:21,629 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2025-03-17 19:46:21,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1745326756, now seen corresponding path program 2 times [2025-03-17 19:46:21,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:21,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590675522] [2025-03-17 19:46:21,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:21,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:21,638 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-03-17 19:46:21,643 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 46 statements. [2025-03-17 19:46:21,643 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:21,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-17 19:46:21,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:21,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590675522] [2025-03-17 19:46:21,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590675522] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:21,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302981441] [2025-03-17 19:46:21,678 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:21,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:21,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:21,680 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:21,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 19:46:21,746 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-03-17 19:46:21,761 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 46 statements. [2025-03-17 19:46:21,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:21,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:21,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:46:21,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-17 19:46:21,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-17 19:46:21,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302981441] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:21,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:21,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:46:21,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100622721] [2025-03-17 19:46:21,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:21,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:21,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:21,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:21,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2025-03-17 19:46:21,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 100 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2025-03-17 19:46:21,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:21,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2025-03-17 19:46:21,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:22,245 INFO L124 PetriNetUnfolderBase]: 4655/7353 cut-off events. [2025-03-17 19:46:22,245 INFO L125 PetriNetUnfolderBase]: For 10217/10217 co-relation queries the response was YES. [2025-03-17 19:46:22,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21120 conditions, 7353 events. 4655/7353 cut-off events. For 10217/10217 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 40113 event pairs, 1739 based on Foata normal form. 146/6305 useless extension candidates. Maximal degree in co-relation 20873. Up to 3462 conditions per place. [2025-03-17 19:46:22,258 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 0 selfloop transitions, 0 changer transitions 126/126 dead transitions. [2025-03-17 19:46:22,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 126 transitions, 876 flow [2025-03-17 19:46:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:22,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:22,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2025-03-17 19:46:22,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.559322033898305 [2025-03-17 19:46:22,259 INFO L175 Difference]: Start difference. First operand has 78 places, 100 transitions, 545 flow. Second operand 4 states and 132 transitions. [2025-03-17 19:46:22,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 126 transitions, 876 flow [2025-03-17 19:46:22,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 126 transitions, 856 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-03-17 19:46:22,272 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2025-03-17 19:46:22,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2025-03-17 19:46:22,273 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2025-03-17 19:46:22,273 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2025-03-17 19:46:22,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2025-03-17 19:46:22,275 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2025-03-17 19:46:22,275 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2025-03-17 19:46:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2025-03-17 19:46:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2025-03-17 19:46:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2025-03-17 19:46:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2025-03-17 19:46:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2025-03-17 19:46:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2025-03-17 19:46:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2025-03-17 19:46:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2025-03-17 19:46:22,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 19:46:22,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:22,478 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:22,482 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 19:46:22,482 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 19:46:22,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:46:22 BasicIcfg [2025-03-17 19:46:22,485 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 19:46:22,486 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:46:22,486 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:46:22,486 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:46:22,486 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:46:08" (3/4) ... [2025-03-17 19:46:22,487 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 19:46:22,489 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 19:46:22,489 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 19:46:22,489 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-17 19:46:22,495 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 152 nodes and edges [2025-03-17 19:46:22,497 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 62 nodes and edges [2025-03-17 19:46:22,497 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-03-17 19:46:22,498 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 19:46:22,560 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:46:22,561 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 19:46:22,561 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:46:22,561 INFO L158 Benchmark]: Toolchain (without parser) took 15306.66ms. Allocated memory was 167.8MB in the beginning and 503.3MB in the end (delta: 335.5MB). Free memory was 132.9MB in the beginning and 338.7MB in the end (delta: -205.8MB). Peak memory consumption was 125.1MB. Max. memory is 16.1GB. [2025-03-17 19:46:22,562 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:46:22,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.80ms. Allocated memory is still 167.8MB. Free memory was 132.9MB in the beginning and 120.8MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:46:22,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.17ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 119.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:46:22,562 INFO L158 Benchmark]: Boogie Preprocessor took 49.63ms. Allocated memory is still 167.8MB. Free memory was 119.0MB in the beginning and 116.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:46:22,562 INFO L158 Benchmark]: IcfgBuilder took 689.92ms. Allocated memory is still 167.8MB. Free memory was 116.8MB in the beginning and 55.9MB in the end (delta: 60.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-03-17 19:46:22,562 INFO L158 Benchmark]: TraceAbstraction took 14265.07ms. Allocated memory was 167.8MB in the beginning and 503.3MB in the end (delta: 335.5MB). Free memory was 55.4MB in the beginning and 349.8MB in the end (delta: -294.4MB). Peak memory consumption was 318.1MB. Max. memory is 16.1GB. [2025-03-17 19:46:22,563 INFO L158 Benchmark]: Witness Printer took 75.02ms. Allocated memory is still 503.3MB. Free memory was 349.8MB in the beginning and 338.7MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:46:22,563 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.80ms. Allocated memory is still 167.8MB. Free memory was 132.9MB in the beginning and 120.8MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.17ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 119.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.63ms. Allocated memory is still 167.8MB. Free memory was 119.0MB in the beginning and 116.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 689.92ms. Allocated memory is still 167.8MB. Free memory was 116.8MB in the beginning and 55.9MB in the end (delta: 60.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 14265.07ms. Allocated memory was 167.8MB in the beginning and 503.3MB in the end (delta: 335.5MB). Free memory was 55.4MB in the beginning and 349.8MB in the end (delta: -294.4MB). Peak memory consumption was 318.1MB. Max. memory is 16.1GB. * Witness Printer took 75.02ms. Allocated memory is still 503.3MB. Free memory was 349.8MB in the beginning and 338.7MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 77 locations, 86 edges, 23 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.2s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1916 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1784 mSDsluCounter, 1628 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1565 mSDsCounter, 395 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5835 IncrementalHoareTripleChecker+Invalid, 6230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 395 mSolverCounterUnsat, 63 mSDtfsCounter, 5835 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 668 GetRequests, 480 SyntacticMatches, 6 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=847occurred in iteration=8, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 681 NumberOfCodeBlocks, 501 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 901 ConstructedInterpolants, 0 QuantifiedInterpolants, 2395 SizeOfPredicates, 44 NumberOfNonLiveVariables, 2041 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 42 InterpolantComputations, 10 PerfectInterpolantSequences, 581/719 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 19:46:22,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE