./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-trans.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/chl-chromosome-trans.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 f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:40:19,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:40:19,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:40:19,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:40:19,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:40:19,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:40:19,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:40:19,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:40:19,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:40:19,396 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:40:19,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:40:19,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:40:19,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:40:19,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:40:19,400 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:40:19,401 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:40:19,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:40:19,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:40:19,401 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 -> f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 [2025-03-17 19:40:19,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:40:19,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:40:19,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:40:19,623 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:40:19,623 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:40:19,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2025-03-17 19:40:20,804 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26fc5cce0/e79492e777aa4ffd998dcbf23a1bcf1d/FLAG7eb129127 [2025-03-17 19:40:21,046 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:40:21,047 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2025-03-17 19:40:21,057 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26fc5cce0/e79492e777aa4ffd998dcbf23a1bcf1d/FLAG7eb129127 [2025-03-17 19:40:21,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26fc5cce0/e79492e777aa4ffd998dcbf23a1bcf1d [2025-03-17 19:40:21,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:40:21,083 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:40:21,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:40:21,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:40:21,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:40:21,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c94dd6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21, skipping insertion in model container [2025-03-17 19:40:21,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,106 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:40:21,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:40:21,268 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:40:21,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:40:21,311 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:40:21,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21 WrapperNode [2025-03-17 19:40:21,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:40:21,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:40:21,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:40:21,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:40:21,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,354 INFO L138 Inliner]: procedures = 25, calls = 32, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 305 [2025-03-17 19:40:21,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:40:21,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:40:21,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:40:21,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:40:21,363 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,370 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,391 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-17 19:40:21,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,403 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:40:21,423 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:40:21,423 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:40:21,423 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:40:21,424 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (1/1) ... [2025-03-17 19:40:21,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:40:21,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:21,457 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 19:40:21,469 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 19:40:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:40:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:40:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:40:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:40:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:40:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:40:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:40:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:40:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:40:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:40:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:40:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:40:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:40:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:40:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:40:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:40:21,493 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 19:40:21,600 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:40:21,602 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:40:22,053 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:40:22,054 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:40:22,342 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:40:22,343 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:40:22,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:40:22 BoogieIcfgContainer [2025-03-17 19:40:22,343 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:40:22,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:40:22,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:40:22,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:40:22,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:40:21" (1/3) ... [2025-03-17 19:40:22,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a214fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:40:22, skipping insertion in model container [2025-03-17 19:40:22,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:21" (2/3) ... [2025-03-17 19:40:22,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a214fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:40:22, skipping insertion in model container [2025-03-17 19:40:22,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:40:22" (3/3) ... [2025-03-17 19:40:22,350 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2025-03-17 19:40:22,363 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:40:22,365 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-chromosome-trans.wvr.c that has 4 procedures, 96 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-03-17 19:40:22,365 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:40:22,440 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:40:22,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 235 flow [2025-03-17 19:40:22,541 INFO L124 PetriNetUnfolderBase]: 12/104 cut-off events. [2025-03-17 19:40:22,544 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:40:22,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 12/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 386 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2025-03-17 19:40:22,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 107 transitions, 235 flow [2025-03-17 19:40:22,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 102 transitions, 219 flow [2025-03-17 19:40:22,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:40:22,587 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;@7f81af3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:40:22,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2025-03-17 19:40:22,592 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:40:22,592 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:40:22,592 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:40:22,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:22,593 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:40:22,594 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-03-17 19:40:22,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:22,598 INFO L85 PathProgramCache]: Analyzing trace with hash 875049, now seen corresponding path program 1 times [2025-03-17 19:40:22,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:22,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467032003] [2025-03-17 19:40:22,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:22,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:22,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:40:22,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:40:22,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:22,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:22,801 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 19:40:22,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:22,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467032003] [2025-03-17 19:40:22,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467032003] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:22,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:22,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:40:22,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580343504] [2025-03-17 19:40:22,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:22,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:22,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:22,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:22,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:22,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2025-03-17 19:40:22,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 19:40:22,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:22,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2025-03-17 19:40:22,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:23,709 INFO L124 PetriNetUnfolderBase]: 4188/8491 cut-off events. [2025-03-17 19:40:23,709 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2025-03-17 19:40:23,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14270 conditions, 8491 events. 4188/8491 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 73216 event pairs, 2784 based on Foata normal form. 3/6767 useless extension candidates. Maximal degree in co-relation 13598. Up to 5549 conditions per place. [2025-03-17 19:40:23,794 INFO L140 encePairwiseOnDemand]: 96/107 looper letters, 40 selfloop transitions, 8 changer transitions 0/99 dead transitions. [2025-03-17 19:40:23,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 99 transitions, 309 flow [2025-03-17 19:40:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:23,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2025-03-17 19:40:23,804 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6238317757009346 [2025-03-17 19:40:23,805 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 219 flow. Second operand 4 states and 267 transitions. [2025-03-17 19:40:23,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 99 transitions, 309 flow [2025-03-17 19:40:23,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 99 transitions, 300 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:40:23,818 INFO L231 Difference]: Finished difference. Result has 95 places, 99 transitions, 220 flow [2025-03-17 19:40:23,820 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=95, PETRI_TRANSITIONS=99} [2025-03-17 19:40:23,824 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -5 predicate places. [2025-03-17 19:40:23,824 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 99 transitions, 220 flow [2025-03-17 19:40:23,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 19:40:23,825 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:23,825 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-17 19:40:23,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:40:23,826 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-03-17 19:40:23,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:23,827 INFO L85 PathProgramCache]: Analyzing trace with hash 27127296, now seen corresponding path program 1 times [2025-03-17 19:40:23,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:23,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289634368] [2025-03-17 19:40:23,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:23,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:23,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 19:40:23,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 19:40:23,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:23,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:23,914 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 19:40:23,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:23,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289634368] [2025-03-17 19:40:23,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289634368] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:23,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:40:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852099897] [2025-03-17 19:40:23,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:23,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:23,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:23,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:23,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2025-03-17 19:40:23,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 19:40:23,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:23,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2025-03-17 19:40:23,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:24,538 INFO L124 PetriNetUnfolderBase]: 4191/8503 cut-off events. [2025-03-17 19:40:24,539 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2025-03-17 19:40:24,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14224 conditions, 8503 events. 4191/8503 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 73319 event pairs, 2784 based on Foata normal form. 3/6783 useless extension candidates. Maximal degree in co-relation 14156. Up to 5562 conditions per place. [2025-03-17 19:40:24,590 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 47 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2025-03-17 19:40:24,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 108 transitions, 366 flow [2025-03-17 19:40:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2025-03-17 19:40:24,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6448598130841121 [2025-03-17 19:40:24,592 INFO L175 Difference]: Start difference. First operand has 95 places, 99 transitions, 220 flow. Second operand 4 states and 276 transitions. [2025-03-17 19:40:24,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 108 transitions, 366 flow [2025-03-17 19:40:24,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 108 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:40:24,598 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 286 flow [2025-03-17 19:40:24,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2025-03-17 19:40:24,599 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2025-03-17 19:40:24,599 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 286 flow [2025-03-17 19:40:24,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 19:40:24,599 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:24,600 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:40:24,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:40:24,600 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-03-17 19:40:24,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:24,601 INFO L85 PathProgramCache]: Analyzing trace with hash 696245331, now seen corresponding path program 1 times [2025-03-17 19:40:24,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:24,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6733399] [2025-03-17 19:40:24,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:24,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:24,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:40:24,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:40:24,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:24,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:24,712 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 19:40:24,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6733399] [2025-03-17 19:40:24,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6733399] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700681906] [2025-03-17 19:40:24,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:24,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:24,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:24,715 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 19:40:24,717 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 19:40:24,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:40:24,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:40:24,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:24,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:24,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:40:24,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:24,803 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 19:40:24,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:40:24,837 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 19:40:24,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700681906] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:40:24,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:40:24,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-17 19:40:24,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300123717] [2025-03-17 19:40:24,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:40:24,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 19:40:24,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:24,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 19:40:24,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-17 19:40:24,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2025-03-17 19:40:24,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 286 flow. Second operand has 10 states, 10 states have (on average 55.0) internal successors, (550), 10 states have internal predecessors, (550), 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 19:40:24,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:24,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2025-03-17 19:40:24,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:25,606 INFO L124 PetriNetUnfolderBase]: 4200/8539 cut-off events. [2025-03-17 19:40:25,607 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2025-03-17 19:40:25,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14339 conditions, 8539 events. 4200/8539 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 73487 event pairs, 2784 based on Foata normal form. 0/6811 useless extension candidates. Maximal degree in co-relation 14170. Up to 5565 conditions per place. [2025-03-17 19:40:25,649 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 47 selfloop transitions, 37 changer transitions 0/135 dead transitions. [2025-03-17 19:40:25,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 135 transitions, 574 flow [2025-03-17 19:40:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:40:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:40:25,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2025-03-17 19:40:25,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.591588785046729 [2025-03-17 19:40:25,653 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 286 flow. Second operand 10 states and 633 transitions. [2025-03-17 19:40:25,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 135 transitions, 574 flow [2025-03-17 19:40:25,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 135 transitions, 574 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:40:25,655 INFO L231 Difference]: Finished difference. Result has 110 places, 135 transitions, 530 flow [2025-03-17 19:40:25,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=530, PETRI_PLACES=110, PETRI_TRANSITIONS=135} [2025-03-17 19:40:25,656 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 10 predicate places. [2025-03-17 19:40:25,656 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 135 transitions, 530 flow [2025-03-17 19:40:25,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 55.0) internal successors, (550), 10 states have internal predecessors, (550), 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 19:40:25,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:25,657 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:25,664 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 19:40:25,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:25,861 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-03-17 19:40:25,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:25,862 INFO L85 PathProgramCache]: Analyzing trace with hash 225198596, now seen corresponding path program 1 times [2025-03-17 19:40:25,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:25,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576211621] [2025-03-17 19:40:25,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:25,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:25,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:40:25,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:40:25,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:25,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:26,015 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 19:40:26,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576211621] [2025-03-17 19:40:26,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576211621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:26,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:26,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:40:26,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993576710] [2025-03-17 19:40:26,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:26,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:40:26,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:26,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:40:26,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:40:26,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2025-03-17 19:40:26,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 135 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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 19:40:26,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:26,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2025-03-17 19:40:26,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:26,702 INFO L124 PetriNetUnfolderBase]: 4197/8536 cut-off events. [2025-03-17 19:40:26,702 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2025-03-17 19:40:26,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14391 conditions, 8536 events. 4197/8536 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 73354 event pairs, 2784 based on Foata normal form. 3/6817 useless extension candidates. Maximal degree in co-relation 14296. Up to 5579 conditions per place. [2025-03-17 19:40:26,742 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 66 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2025-03-17 19:40:26,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 132 transitions, 670 flow [2025-03-17 19:40:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:40:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:40:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2025-03-17 19:40:26,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7289719626168224 [2025-03-17 19:40:26,743 INFO L175 Difference]: Start difference. First operand has 110 places, 135 transitions, 530 flow. Second operand 3 states and 234 transitions. [2025-03-17 19:40:26,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 132 transitions, 670 flow [2025-03-17 19:40:26,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 132 transitions, 566 flow, removed 25 selfloop flow, removed 5 redundant places. [2025-03-17 19:40:26,748 INFO L231 Difference]: Finished difference. Result has 107 places, 132 transitions, 434 flow [2025-03-17 19:40:26,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=107, PETRI_TRANSITIONS=132} [2025-03-17 19:40:26,748 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 7 predicate places. [2025-03-17 19:40:26,749 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 132 transitions, 434 flow [2025-03-17 19:40:26,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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 19:40:26,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:26,749 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:40:26,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:40:26,749 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-03-17 19:40:26,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:26,751 INFO L85 PathProgramCache]: Analyzing trace with hash 594218048, now seen corresponding path program 2 times [2025-03-17 19:40:26,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:26,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105231225] [2025-03-17 19:40:26,752 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:40:26,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:26,761 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:40:26,766 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:40:26,767 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:40:26,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:26,816 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 19:40:26,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:26,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105231225] [2025-03-17 19:40:26,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105231225] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:26,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337411923] [2025-03-17 19:40:26,817 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:40:26,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:26,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:26,821 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 19:40:26,822 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 19:40:26,873 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:40:26,881 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:40:26,882 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:40:26,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:26,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:40:26,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:26,909 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 19:40:26,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:40:26,940 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 19:40:26,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337411923] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:40:26,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:40:26,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2025-03-17 19:40:26,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471281424] [2025-03-17 19:40:26,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:40:26,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:40:26,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:26,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:40:26,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:40:26,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2025-03-17 19:40:26,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 132 transitions, 434 flow. Second operand has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 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 19:40:26,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:26,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2025-03-17 19:40:26,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:27,453 INFO L124 PetriNetUnfolderBase]: 4197/8533 cut-off events. [2025-03-17 19:40:27,453 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2025-03-17 19:40:27,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14335 conditions, 8533 events. 4197/8533 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 73235 event pairs, 2784 based on Foata normal form. 3/6814 useless extension candidates. Maximal degree in co-relation 14268. Up to 5552 conditions per place. [2025-03-17 19:40:27,486 INFO L140 encePairwiseOnDemand]: 96/107 looper letters, 43 selfloop transitions, 35 changer transitions 0/129 dead transitions. [2025-03-17 19:40:27,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 129 transitions, 560 flow [2025-03-17 19:40:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 264 transitions. [2025-03-17 19:40:27,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.616822429906542 [2025-03-17 19:40:27,487 INFO L175 Difference]: Start difference. First operand has 107 places, 132 transitions, 434 flow. Second operand 4 states and 264 transitions. [2025-03-17 19:40:27,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 129 transitions, 560 flow [2025-03-17 19:40:27,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 129 transitions, 506 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-17 19:40:27,490 INFO L231 Difference]: Finished difference. Result has 101 places, 129 transitions, 420 flow [2025-03-17 19:40:27,490 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=420, PETRI_PLACES=101, PETRI_TRANSITIONS=129} [2025-03-17 19:40:27,490 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2025-03-17 19:40:27,490 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 129 transitions, 420 flow [2025-03-17 19:40:27,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 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 19:40:27,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:27,491 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:27,497 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 19:40:27,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:27,692 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-03-17 19:40:27,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1878640758, now seen corresponding path program 1 times [2025-03-17 19:40:27,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:27,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802562716] [2025-03-17 19:40:27,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:27,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:27,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:40:27,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:40:27,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:27,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:40:27,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:27,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802562716] [2025-03-17 19:40:27,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802562716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:27,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:27,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:40:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071300679] [2025-03-17 19:40:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:27,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:27,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:27,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:27,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2025-03-17 19:40:27,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 129 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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 19:40:27,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:27,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2025-03-17 19:40:27,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:28,484 INFO L124 PetriNetUnfolderBase]: 8122/14708 cut-off events. [2025-03-17 19:40:28,484 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2025-03-17 19:40:28,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25894 conditions, 14708 events. 8122/14708 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 124405 event pairs, 2517 based on Foata normal form. 364/12310 useless extension candidates. Maximal degree in co-relation 25711. Up to 5123 conditions per place. [2025-03-17 19:40:28,623 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 128 selfloop transitions, 5 changer transitions 0/178 dead transitions. [2025-03-17 19:40:28,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 178 transitions, 790 flow [2025-03-17 19:40:28,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2025-03-17 19:40:28,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7453271028037384 [2025-03-17 19:40:28,626 INFO L175 Difference]: Start difference. First operand has 101 places, 129 transitions, 420 flow. Second operand 4 states and 319 transitions. [2025-03-17 19:40:28,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 178 transitions, 790 flow [2025-03-17 19:40:28,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 178 transitions, 720 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:40:28,630 INFO L231 Difference]: Finished difference. Result has 103 places, 131 transitions, 384 flow [2025-03-17 19:40:28,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=103, PETRI_TRANSITIONS=131} [2025-03-17 19:40:28,632 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2025-03-17 19:40:28,633 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 131 transitions, 384 flow [2025-03-17 19:40:28,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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 19:40:28,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:28,633 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:28,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:40:28,633 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-03-17 19:40:28,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:28,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1891677791, now seen corresponding path program 1 times [2025-03-17 19:40:28,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:28,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081802523] [2025-03-17 19:40:28,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:28,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:28,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:40:28,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:40:28,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:28,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:40:28,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:28,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081802523] [2025-03-17 19:40:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081802523] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328710520] [2025-03-17 19:40:28,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:28,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:28,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:28,793 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 19:40:28,795 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 19:40:28,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:40:28,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:40:28,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:28,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:28,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:40:28,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:40:28,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:40:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:40:28,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328710520] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:40:28,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:40:28,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2025-03-17 19:40:28,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20042411] [2025-03-17 19:40:28,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:40:28,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 19:40:28,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:28,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 19:40:28,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-17 19:40:28,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2025-03-17 19:40:29,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 131 transitions, 384 flow. Second operand has 11 states, 11 states have (on average 56.45454545454545) internal successors, (621), 11 states have internal predecessors, (621), 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 19:40:29,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:29,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2025-03-17 19:40:29,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:29,836 INFO L124 PetriNetUnfolderBase]: 5236/10927 cut-off events. [2025-03-17 19:40:29,837 INFO L125 PetriNetUnfolderBase]: For 1882/2152 co-relation queries the response was YES. [2025-03-17 19:40:29,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19651 conditions, 10927 events. 5236/10927 cut-off events. For 1882/2152 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 100099 event pairs, 3558 based on Foata normal form. 137/9008 useless extension candidates. Maximal degree in co-relation 19519. Up to 6968 conditions per place. [2025-03-17 19:40:29,911 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 42 selfloop transitions, 32 changer transitions 0/125 dead transitions. [2025-03-17 19:40:29,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 125 transitions, 508 flow [2025-03-17 19:40:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:40:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:40:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 444 transitions. [2025-03-17 19:40:29,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5927903871829105 [2025-03-17 19:40:29,914 INFO L175 Difference]: Start difference. First operand has 103 places, 131 transitions, 384 flow. Second operand 7 states and 444 transitions. [2025-03-17 19:40:29,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 125 transitions, 508 flow [2025-03-17 19:40:29,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 125 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:40:29,934 INFO L231 Difference]: Finished difference. Result has 109 places, 125 transitions, 424 flow [2025-03-17 19:40:29,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=109, PETRI_TRANSITIONS=125} [2025-03-17 19:40:29,936 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 9 predicate places. [2025-03-17 19:40:29,937 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 125 transitions, 424 flow [2025-03-17 19:40:29,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 56.45454545454545) internal successors, (621), 11 states have internal predecessors, (621), 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 19:40:29,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:29,938 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:29,945 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 19:40:30,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:30,142 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-03-17 19:40:30,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:30,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1850197791, now seen corresponding path program 2 times [2025-03-17 19:40:30,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:30,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271388501] [2025-03-17 19:40:30,143 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:40:30,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:30,154 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-03-17 19:40:30,187 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 19:40:30,187 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:40:30,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 19:40:30,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:30,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271388501] [2025-03-17 19:40:30,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271388501] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:30,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067200933] [2025-03-17 19:40:30,352 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:40:30,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:30,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:30,354 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 19:40:30,356 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 19:40:30,416 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-03-17 19:40:30,447 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 19:40:30,447 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:40:30,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:30,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 19:40:30,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 19:40:30,546 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:40:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 19:40:30,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067200933] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:40:30,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:40:30,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-17 19:40:30,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416797953] [2025-03-17 19:40:30,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:40:30,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 19:40:30,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:30,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 19:40:30,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2025-03-17 19:40:30,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2025-03-17 19:40:30,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 125 transitions, 424 flow. Second operand has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 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 19:40:30,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:30,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2025-03-17 19:40:30,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:31,484 INFO L124 PetriNetUnfolderBase]: 5233/10927 cut-off events. [2025-03-17 19:40:31,485 INFO L125 PetriNetUnfolderBase]: For 1912/2182 co-relation queries the response was YES. [2025-03-17 19:40:31,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19685 conditions, 10927 events. 5233/10927 cut-off events. For 1912/2182 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 100053 event pairs, 3558 based on Foata normal form. 139/9014 useless extension candidates. Maximal degree in co-relation 19522. Up to 6961 conditions per place. [2025-03-17 19:40:31,532 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 41 selfloop transitions, 33 changer transitions 0/125 dead transitions. [2025-03-17 19:40:31,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 125 transitions, 574 flow [2025-03-17 19:40:31,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 19:40:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 19:40:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 672 transitions. [2025-03-17 19:40:31,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5709430756159728 [2025-03-17 19:40:31,534 INFO L175 Difference]: Start difference. First operand has 109 places, 125 transitions, 424 flow. Second operand 11 states and 672 transitions. [2025-03-17 19:40:31,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 125 transitions, 574 flow [2025-03-17 19:40:31,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 125 transitions, 550 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:40:31,549 INFO L231 Difference]: Finished difference. Result has 117 places, 125 transitions, 494 flow [2025-03-17 19:40:31,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=494, PETRI_PLACES=117, PETRI_TRANSITIONS=125} [2025-03-17 19:40:31,550 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 17 predicate places. [2025-03-17 19:40:31,550 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 125 transitions, 494 flow [2025-03-17 19:40:31,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.611111111111114) internal successors, (1001), 18 states have internal predecessors, (1001), 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 19:40:31,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:31,551 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:31,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 19:40:31,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:31,751 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-03-17 19:40:31,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1511569441, now seen corresponding path program 3 times [2025-03-17 19:40:31,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:31,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556187126] [2025-03-17 19:40:31,752 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:40:31,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:31,764 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 6 equivalence classes. [2025-03-17 19:40:31,863 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 19:40:31,863 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-17 19:40:31,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-17 19:40:33,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:33,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556187126] [2025-03-17 19:40:33,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556187126] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:33,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744003418] [2025-03-17 19:40:33,695 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 19:40:33,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:33,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:33,697 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 19:40:33,699 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 19:40:33,767 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 6 equivalence classes. [2025-03-17 19:40:33,846 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 55 of 55 statements. [2025-03-17 19:40:33,846 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-17 19:40:33,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:33,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-03-17 19:40:33,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:33,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 19:40:33,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 19:40:33,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 19:40:34,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 19:40:34,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 19:40:34,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 19:40:34,244 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 19:40:34,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-17 19:40:34,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-03-17 19:40:34,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-03-17 19:40:34,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-03-17 19:40:34,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-03-17 19:40:34,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-03-17 19:40:34,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-17 19:40:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-03-17 19:40:34,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:40:34,723 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_219 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_219) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2025-03-17 19:40:35,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 19:40:35,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 75 [2025-03-17 19:40:35,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 19:40:35,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2025-03-17 19:40:35,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2025-03-17 19:40:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 47 trivial. 20 not checked. [2025-03-17 19:40:35,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744003418] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:40:35,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:40:35,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 19] total 52 [2025-03-17 19:40:35,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334206424] [2025-03-17 19:40:35,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:40:35,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-03-17 19:40:35,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:35,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-03-17 19:40:35,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=2350, Unknown=1, NotChecked=100, Total=2756 [2025-03-17 19:40:35,489 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 107 [2025-03-17 19:40:35,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 125 transitions, 494 flow. Second operand has 53 states, 53 states have (on average 43.886792452830186) internal successors, (2326), 53 states have internal predecessors, (2326), 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 19:40:35,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:35,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 107 [2025-03-17 19:40:35,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:40,691 INFO L124 PetriNetUnfolderBase]: 25910/39130 cut-off events. [2025-03-17 19:40:40,692 INFO L125 PetriNetUnfolderBase]: For 3412/3456 co-relation queries the response was YES. [2025-03-17 19:40:40,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80492 conditions, 39130 events. 25910/39130 cut-off events. For 3412/3456 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 288224 event pairs, 5513 based on Foata normal form. 44/34612 useless extension candidates. Maximal degree in co-relation 80108. Up to 12356 conditions per place. [2025-03-17 19:40:40,947 INFO L140 encePairwiseOnDemand]: 89/107 looper letters, 184 selfloop transitions, 75 changer transitions 0/298 dead transitions. [2025-03-17 19:40:40,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 298 transitions, 1586 flow [2025-03-17 19:40:40,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-03-17 19:40:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2025-03-17 19:40:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2231 transitions. [2025-03-17 19:40:40,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44362696361105586 [2025-03-17 19:40:40,953 INFO L175 Difference]: Start difference. First operand has 117 places, 125 transitions, 494 flow. Second operand 47 states and 2231 transitions. [2025-03-17 19:40:40,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 298 transitions, 1586 flow [2025-03-17 19:40:40,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 298 transitions, 1517 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-17 19:40:40,992 INFO L231 Difference]: Finished difference. Result has 158 places, 161 transitions, 879 flow [2025-03-17 19:40:40,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=879, PETRI_PLACES=158, PETRI_TRANSITIONS=161} [2025-03-17 19:40:40,993 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 58 predicate places. [2025-03-17 19:40:40,993 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 161 transitions, 879 flow [2025-03-17 19:40:40,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 43.886792452830186) internal successors, (2326), 53 states have internal predecessors, (2326), 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 19:40:40,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:40,995 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:41,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 19:40:41,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:41,195 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-03-17 19:40:41,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:41,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1747663378, now seen corresponding path program 1 times [2025-03-17 19:40:41,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:41,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771465141] [2025-03-17 19:40:41,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:41,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:41,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 19:40:41,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 19:40:41,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:41,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2025-03-17 19:40:41,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:41,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771465141] [2025-03-17 19:40:41,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771465141] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:41,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:41,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:40:41,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88729204] [2025-03-17 19:40:41,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:41,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:41,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:41,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:41,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2025-03-17 19:40:41,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 161 transitions, 879 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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 19:40:41,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:41,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2025-03-17 19:40:41,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:44,319 INFO L124 PetriNetUnfolderBase]: 20921/38371 cut-off events. [2025-03-17 19:40:44,320 INFO L125 PetriNetUnfolderBase]: For 23595/25347 co-relation queries the response was YES. [2025-03-17 19:40:44,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80798 conditions, 38371 events. 20921/38371 cut-off events. For 23595/25347 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 362215 event pairs, 7079 based on Foata normal form. 1539/33950 useless extension candidates. Maximal degree in co-relation 80409. Up to 13666 conditions per place. [2025-03-17 19:40:44,550 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 175 selfloop transitions, 5 changer transitions 0/226 dead transitions. [2025-03-17 19:40:44,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 226 transitions, 1523 flow [2025-03-17 19:40:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2025-03-17 19:40:44,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7406542056074766 [2025-03-17 19:40:44,554 INFO L175 Difference]: Start difference. First operand has 158 places, 161 transitions, 879 flow. Second operand 4 states and 317 transitions. [2025-03-17 19:40:44,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 226 transitions, 1523 flow [2025-03-17 19:40:44,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 226 transitions, 1173 flow, removed 32 selfloop flow, removed 17 redundant places. [2025-03-17 19:40:44,590 INFO L231 Difference]: Finished difference. Result has 146 places, 163 transitions, 567 flow [2025-03-17 19:40:44,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=567, PETRI_PLACES=146, PETRI_TRANSITIONS=163} [2025-03-17 19:40:44,591 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 46 predicate places. [2025-03-17 19:40:44,591 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 163 transitions, 567 flow [2025-03-17 19:40:44,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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 19:40:44,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:44,591 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:44,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:40:44,591 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2025-03-17 19:40:44,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:44,592 INFO L85 PathProgramCache]: Analyzing trace with hash -386017478, now seen corresponding path program 1 times [2025-03-17 19:40:44,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:44,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523455654] [2025-03-17 19:40:44,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:44,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:44,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 19:40:44,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 19:40:44,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:44,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:45,591 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2025-03-17 19:40:45,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:45,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523455654] [2025-03-17 19:40:45,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523455654] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:40:45,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467945550] [2025-03-17 19:40:45,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:45,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:40:45,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:45,594 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 19:40:45,596 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 19:40:45,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 19:40:45,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 19:40:45,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:45,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:45,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-17 19:40:45,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:40:45,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 19:40:45,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 19:40:45,778 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-03-17 19:40:45,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-03-17 19:40:45,831 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-03-17 19:40:45,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-03-17 19:40:45,891 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-03-17 19:40:45,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-03-17 19:40:45,947 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-03-17 19:40:45,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-03-17 19:40:45,976 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-17 19:40:45,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-17 19:40:45,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-03-17 19:40:46,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-03-17 19:40:46,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-03-17 19:40:46,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-03-17 19:40:46,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-03-17 19:40:46,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-17 19:40:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-03-17 19:40:46,100 INFO L312 TraceCheckSpWp]: Computing backward predicates...