./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-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-name-comparator-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 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:41:28,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:41:28,268 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:41:28,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:41:28,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:41:28,289 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:41:28,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:41:28,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:41:28,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:41:28,290 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:41:28,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:41:28,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:41:28,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:41:28,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:41:28,290 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:41:28,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:41:28,291 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:41:28,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:41:28,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:41:28,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:41:28,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:41:28,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:41:28,294 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:41:28,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:41:28,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:41:28,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:41:28,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:41:28,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:41:28,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:41:28,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:41:28,295 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 -> 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 [2025-03-17 19:41:28,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:41:28,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:41:28,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:41:28,540 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:41:28,540 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:41:28,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2025-03-17 19:41:29,685 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1da8c980/53c18e67613a45f39ab31c076ce52db8/FLAG08c36a33e [2025-03-17 19:41:29,906 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:41:29,907 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2025-03-17 19:41:29,914 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1da8c980/53c18e67613a45f39ab31c076ce52db8/FLAG08c36a33e [2025-03-17 19:41:30,247 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1da8c980/53c18e67613a45f39ab31c076ce52db8 [2025-03-17 19:41:30,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:41:30,250 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:41:30,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:41:30,251 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:41:30,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:41:30,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6d6ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30, skipping insertion in model container [2025-03-17 19:41:30,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:41:30,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:41:30,400 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:41:30,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:41:30,442 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:41:30,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30 WrapperNode [2025-03-17 19:41:30,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:41:30,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:41:30,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:41:30,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:41:30,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,489 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 350 [2025-03-17 19:41:30,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:41:30,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:41:30,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:41:30,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:41:30,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,499 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,523 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-17 19:41:30,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,537 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:41:30,546 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:41:30,546 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:41:30,546 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:41:30,546 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (1/1) ... [2025-03-17 19:41:30,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:41:30,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:41:30,572 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 19:41:30,577 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 19:41:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:41:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:41:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:41:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:41:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:41:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:41:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:41:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:41:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:41:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:41:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:41:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:41:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:41:30,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:41:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:41:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:41:30,596 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 19:41:30,698 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:41:30,701 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:41:31,123 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:41:31,124 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:41:31,359 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:41:31,359 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:41:31,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:41:31 BoogieIcfgContainer [2025-03-17 19:41:31,360 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:41:31,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:41:31,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:41:31,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:41:31,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:41:30" (1/3) ... [2025-03-17 19:41:31,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311e5258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:41:31, skipping insertion in model container [2025-03-17 19:41:31,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:41:30" (2/3) ... [2025-03-17 19:41:31,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311e5258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:41:31, skipping insertion in model container [2025-03-17 19:41:31,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:41:31" (3/3) ... [2025-03-17 19:41:31,365 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2025-03-17 19:41:31,375 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:41:31,376 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-trans.wvr.c that has 4 procedures, 98 locations, 1 initial locations, 4 loop locations, and 26 error locations. [2025-03-17 19:41:31,376 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:41:31,436 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:41:31,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 113 transitions, 247 flow [2025-03-17 19:41:31,500 INFO L124 PetriNetUnfolderBase]: 16/110 cut-off events. [2025-03-17 19:41:31,501 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:41:31,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 110 events. 16/110 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 446 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2025-03-17 19:41:31,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 113 transitions, 247 flow [2025-03-17 19:41:31,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 108 transitions, 231 flow [2025-03-17 19:41:31,521 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:41:31,529 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;@5bd2d985, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:41:31,529 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2025-03-17 19:41:31,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:41:31,536 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:41:31,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:41:31,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:31,537 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:41:31,537 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-17 19:41:31,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:31,540 INFO L85 PathProgramCache]: Analyzing trace with hash 936388, now seen corresponding path program 1 times [2025-03-17 19:41:31,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:31,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289069195] [2025-03-17 19:41:31,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:31,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:41:31,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:41:31,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:31,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:31,731 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 19:41:31,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:31,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289069195] [2025-03-17 19:41:31,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289069195] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:31,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:31,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:41:31,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123094060] [2025-03-17 19:41:31,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:31,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:41:31,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:31,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:41:31,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:41:31,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-17 19:41:31,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 19:41:31,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:31,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-17 19:41:31,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:33,379 INFO L124 PetriNetUnfolderBase]: 12254/23583 cut-off events. [2025-03-17 19:41:33,380 INFO L125 PetriNetUnfolderBase]: For 520/520 co-relation queries the response was YES. [2025-03-17 19:41:33,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40173 conditions, 23583 events. 12254/23583 cut-off events. For 520/520 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 215997 event pairs, 8448 based on Foata normal form. 1/18351 useless extension candidates. Maximal degree in co-relation 38842. Up to 16148 conditions per place. [2025-03-17 19:41:33,542 INFO L140 encePairwiseOnDemand]: 104/113 looper letters, 55 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2025-03-17 19:41:33,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 108 transitions, 349 flow [2025-03-17 19:41:33,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:41:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:41:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2025-03-17 19:41:33,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6017699115044248 [2025-03-17 19:41:33,556 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 231 flow. Second operand 4 states and 272 transitions. [2025-03-17 19:41:33,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 108 transitions, 349 flow [2025-03-17 19:41:33,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 108 transitions, 340 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:41:33,569 INFO L231 Difference]: Finished difference. Result has 102 places, 108 transitions, 245 flow [2025-03-17 19:41:33,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=102, PETRI_TRANSITIONS=108} [2025-03-17 19:41:33,573 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 0 predicate places. [2025-03-17 19:41:33,574 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 108 transitions, 245 flow [2025-03-17 19:41:33,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 19:41:33,575 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:33,575 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:41:33,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:41:33,575 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-17 19:41:33,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2126988718, now seen corresponding path program 1 times [2025-03-17 19:41:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:33,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785727733] [2025-03-17 19:41:33,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:33,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:33,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:41:33,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:41:33,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:33,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:33,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:33,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785727733] [2025-03-17 19:41:33,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785727733] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:41:33,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515469085] [2025-03-17 19:41:33,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:33,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:41:33,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:41:33,705 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 19:41:33,706 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 19:41:33,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:41:33,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:41:33,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:33,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:33,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:41:33,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:41:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:33,806 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:41:33,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515469085] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:33,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:41:33,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:41:33,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547149567] [2025-03-17 19:41:33,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:33,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:41:33,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:33,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:41:33,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:41:33,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-17 19:41:33,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:33,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:33,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-17 19:41:33,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:35,126 INFO L124 PetriNetUnfolderBase]: 12254/23582 cut-off events. [2025-03-17 19:41:35,127 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2025-03-17 19:41:35,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40024 conditions, 23582 events. 12254/23582 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 215960 event pairs, 8448 based on Foata normal form. 1/18351 useless extension candidates. Maximal degree in co-relation 39997. Up to 16143 conditions per place. [2025-03-17 19:41:35,262 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 51 selfloop transitions, 7 changer transitions 0/107 dead transitions. [2025-03-17 19:41:35,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 357 flow [2025-03-17 19:41:35,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:41:35,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:41:35,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2025-03-17 19:41:35,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5471976401179941 [2025-03-17 19:41:35,268 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 245 flow. Second operand 6 states and 371 transitions. [2025-03-17 19:41:35,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 357 flow [2025-03-17 19:41:35,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:41:35,271 INFO L231 Difference]: Finished difference. Result has 105 places, 107 transitions, 252 flow [2025-03-17 19:41:35,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=105, PETRI_TRANSITIONS=107} [2025-03-17 19:41:35,272 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2025-03-17 19:41:35,272 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 107 transitions, 252 flow [2025-03-17 19:41:35,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:35,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:35,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:35,280 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 19:41:35,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:41:35,478 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-17 19:41:35,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:35,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1658256134, now seen corresponding path program 1 times [2025-03-17 19:41:35,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:35,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974242127] [2025-03-17 19:41:35,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:35,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:35,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:41:35,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:41:35,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:35,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:35,574 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 19:41:35,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:35,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974242127] [2025-03-17 19:41:35,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974242127] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:35,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:35,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:41:35,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598337128] [2025-03-17 19:41:35,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:35,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:41:35,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:35,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:41:35,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:41:35,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-17 19:41:35,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 107 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 19:41:35,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:35,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-17 19:41:35,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:37,833 INFO L124 PetriNetUnfolderBase]: 27075/48912 cut-off events. [2025-03-17 19:41:37,833 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2025-03-17 19:41:37,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85327 conditions, 48912 events. 27075/48912 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 2176. Compared 464004 event pairs, 11248 based on Foata normal form. 366/39841 useless extension candidates. Maximal degree in co-relation 85297. Up to 20363 conditions per place. [2025-03-17 19:41:38,057 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 137 selfloop transitions, 3 changer transitions 0/188 dead transitions. [2025-03-17 19:41:38,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 188 transitions, 702 flow [2025-03-17 19:41:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:41:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:41:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2025-03-17 19:41:38,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7676991150442478 [2025-03-17 19:41:38,059 INFO L175 Difference]: Start difference. First operand has 105 places, 107 transitions, 252 flow. Second operand 4 states and 347 transitions. [2025-03-17 19:41:38,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 188 transitions, 702 flow [2025-03-17 19:41:38,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 188 transitions, 680 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-03-17 19:41:38,061 INFO L231 Difference]: Finished difference. Result has 105 places, 109 transitions, 252 flow [2025-03-17 19:41:38,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=105, PETRI_TRANSITIONS=109} [2025-03-17 19:41:38,062 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2025-03-17 19:41:38,062 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 109 transitions, 252 flow [2025-03-17 19:41:38,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 19:41:38,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:38,063 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:41:38,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:41:38,063 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-17 19:41:38,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:38,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1512141681, now seen corresponding path program 1 times [2025-03-17 19:41:38,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:38,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203981812] [2025-03-17 19:41:38,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:38,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:38,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:41:38,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:41:38,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:38,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:38,148 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 19:41:38,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:38,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203981812] [2025-03-17 19:41:38,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203981812] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:41:38,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485633064] [2025-03-17 19:41:38,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:38,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:41:38,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:41:38,151 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 19:41:38,153 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 19:41:38,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:41:38,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:41:38,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:38,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:38,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:41:38,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:41:38,238 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 19:41:38,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:41:38,268 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 19:41:38,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485633064] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:41:38,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:41:38,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:41:38,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711503960] [2025-03-17 19:41:38,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:41:38,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:41:38,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:38,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:41:38,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:41:38,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-17 19:41:38,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 109 transitions, 252 flow. Second operand has 12 states, 12 states have (on average 53.083333333333336) internal successors, (637), 12 states have internal predecessors, (637), 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 19:41:38,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:38,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-17 19:41:38,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:40,082 INFO L124 PetriNetUnfolderBase]: 23713/45682 cut-off events. [2025-03-17 19:41:40,082 INFO L125 PetriNetUnfolderBase]: For 2871/3191 co-relation queries the response was YES. [2025-03-17 19:41:40,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79768 conditions, 45682 events. 23713/45682 cut-off events. For 2871/3191 co-relation queries the response was YES. Maximal size of possible extension queue 1997. Compared 458247 event pairs, 16558 based on Foata normal form. 3/36167 useless extension candidates. Maximal degree in co-relation 79716. Up to 31228 conditions per place. [2025-03-17 19:41:40,330 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 56 selfloop transitions, 13 changer transitions 0/118 dead transitions. [2025-03-17 19:41:40,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 118 transitions, 420 flow [2025-03-17 19:41:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:41:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:41:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2025-03-17 19:41:40,333 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5221238938053098 [2025-03-17 19:41:40,333 INFO L175 Difference]: Start difference. First operand has 105 places, 109 transitions, 252 flow. Second operand 10 states and 590 transitions. [2025-03-17 19:41:40,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 118 transitions, 420 flow [2025-03-17 19:41:40,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 118 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:41:40,337 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 324 flow [2025-03-17 19:41:40,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2025-03-17 19:41:40,338 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 14 predicate places. [2025-03-17 19:41:40,338 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 324 flow [2025-03-17 19:41:40,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 53.083333333333336) internal successors, (637), 12 states have internal predecessors, (637), 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 19:41:40,338 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:40,338 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:40,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:41:40,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-17 19:41:40,539 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-17 19:41:40,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:40,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1308903718, now seen corresponding path program 1 times [2025-03-17 19:41:40,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:40,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660237501] [2025-03-17 19:41:40,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:40,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:40,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:41:40,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:41:40,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:40,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:40,620 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 19:41:40,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:40,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660237501] [2025-03-17 19:41:40,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660237501] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:40,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:40,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:41:40,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772402126] [2025-03-17 19:41:40,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:40,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:41:40,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:40,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:41:40,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:41:40,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2025-03-17 19:41:40,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 19:41:40,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:40,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2025-03-17 19:41:40,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:42,822 INFO L124 PetriNetUnfolderBase]: 23858/45494 cut-off events. [2025-03-17 19:41:42,822 INFO L125 PetriNetUnfolderBase]: For 2305/2705 co-relation queries the response was YES. [2025-03-17 19:41:42,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79362 conditions, 45494 events. 23858/45494 cut-off events. For 2305/2705 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 451584 event pairs, 16708 based on Foata normal form. 1/36218 useless extension candidates. Maximal degree in co-relation 79326. Up to 31438 conditions per place. [2025-03-17 19:41:43,018 INFO L140 encePairwiseOnDemand]: 110/113 looper letters, 65 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2025-03-17 19:41:43,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 117 transitions, 454 flow [2025-03-17 19:41:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:41:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:41:43,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2025-03-17 19:41:43,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6460176991150443 [2025-03-17 19:41:43,020 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 324 flow. Second operand 3 states and 219 transitions. [2025-03-17 19:41:43,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 117 transitions, 454 flow [2025-03-17 19:41:43,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 444 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-17 19:41:43,023 INFO L231 Difference]: Finished difference. Result has 116 places, 117 transitions, 314 flow [2025-03-17 19:41:43,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=116, PETRI_TRANSITIONS=117} [2025-03-17 19:41:43,024 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 14 predicate places. [2025-03-17 19:41:43,024 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 117 transitions, 314 flow [2025-03-17 19:41:43,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 19:41:43,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:43,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:43,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:41:43,024 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-17 19:41:43,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:43,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1564384068, now seen corresponding path program 1 times [2025-03-17 19:41:43,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:43,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016724257] [2025-03-17 19:41:43,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:43,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:43,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:41:43,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:41:43,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:43,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:41:43,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:43,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016724257] [2025-03-17 19:41:43,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016724257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:43,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:43,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:41:43,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900917456] [2025-03-17 19:41:43,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:43,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:41:43,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:43,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:41:43,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:41:43,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-17 19:41:43,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 117 transitions, 314 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 19:41:43,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:43,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-17 19:41:43,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:47,176 INFO L124 PetriNetUnfolderBase]: 51876/90742 cut-off events. [2025-03-17 19:41:47,176 INFO L125 PetriNetUnfolderBase]: For 5032/6212 co-relation queries the response was YES. [2025-03-17 19:41:47,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164184 conditions, 90742 events. 51876/90742 cut-off events. For 5032/6212 co-relation queries the response was YES. Maximal size of possible extension queue 3618. Compared 899553 event pairs, 21438 based on Foata normal form. 726/75184 useless extension candidates. Maximal degree in co-relation 164162. Up to 38014 conditions per place. [2025-03-17 19:41:47,809 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 148 selfloop transitions, 3 changer transitions 0/199 dead transitions. [2025-03-17 19:41:47,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 199 transitions, 811 flow [2025-03-17 19:41:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:41:47,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:41:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2025-03-17 19:41:47,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7610619469026548 [2025-03-17 19:41:47,811 INFO L175 Difference]: Start difference. First operand has 116 places, 117 transitions, 314 flow. Second operand 4 states and 344 transitions. [2025-03-17 19:41:47,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 199 transitions, 811 flow [2025-03-17 19:41:47,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 199 transitions, 807 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:41:47,815 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 332 flow [2025-03-17 19:41:47,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2025-03-17 19:41:47,815 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 17 predicate places. [2025-03-17 19:41:47,815 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 332 flow [2025-03-17 19:41:47,815 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 19:41:47,815 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:47,815 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:47,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:41:47,816 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-17 19:41:47,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -727915101, now seen corresponding path program 1 times [2025-03-17 19:41:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:47,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105138802] [2025-03-17 19:41:47,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:47,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:41:47,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:41:47,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:47,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:41:47,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:47,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105138802] [2025-03-17 19:41:47,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105138802] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:47,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:47,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:41:47,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149730800] [2025-03-17 19:41:47,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:47,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:41:47,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:47,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:41:47,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:41:47,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2025-03-17 19:41:47,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 19:41:47,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:47,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2025-03-17 19:41:47,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:51,682 INFO L124 PetriNetUnfolderBase]: 43218/73910 cut-off events. [2025-03-17 19:41:51,682 INFO L125 PetriNetUnfolderBase]: For 8752/10192 co-relation queries the response was YES. [2025-03-17 19:41:51,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141257 conditions, 73910 events. 43218/73910 cut-off events. For 8752/10192 co-relation queries the response was YES. Maximal size of possible extension queue 2710. Compared 688457 event pairs, 16970 based on Foata normal form. 0/63152 useless extension candidates. Maximal degree in co-relation 141226. Up to 32264 conditions per place. [2025-03-17 19:41:52,036 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 180 selfloop transitions, 4 changer transitions 0/234 dead transitions. [2025-03-17 19:41:52,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 234 transitions, 985 flow [2025-03-17 19:41:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:41:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:41:52,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2025-03-17 19:41:52,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7716814159292036 [2025-03-17 19:41:52,038 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 332 flow. Second operand 5 states and 436 transitions. [2025-03-17 19:41:52,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 234 transitions, 985 flow [2025-03-17 19:41:52,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 234 transitions, 977 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:41:52,069 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 355 flow [2025-03-17 19:41:52,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2025-03-17 19:41:52,069 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 23 predicate places. [2025-03-17 19:41:52,069 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 355 flow [2025-03-17 19:41:52,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 19:41:52,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:52,070 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:52,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:41:52,070 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-17 19:41:52,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:52,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1057054649, now seen corresponding path program 1 times [2025-03-17 19:41:52,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:52,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634487733] [2025-03-17 19:41:52,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:52,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:52,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:41:52,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:41:52,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:52,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:41:52,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:52,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634487733] [2025-03-17 19:41:52,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634487733] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:41:52,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886457734] [2025-03-17 19:41:52,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:52,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:41:52,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:41:52,165 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 19:41:52,167 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 19:41:52,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:41:52,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:41:52,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:52,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:52,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:41:52,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:41:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:41:52,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:41:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 19:41:52,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886457734] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:41:52,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:41:52,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:41:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664567697] [2025-03-17 19:41:52,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:41:52,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 19:41:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:52,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 19:41:52,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-17 19:41:52,290 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-17 19:41:52,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 355 flow. Second operand has 11 states, 11 states have (on average 53.54545454545455) internal successors, (589), 11 states have internal predecessors, (589), 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 19:41:52,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:52,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-17 19:41:52,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:56,196 INFO L124 PetriNetUnfolderBase]: 40004/75807 cut-off events. [2025-03-17 19:41:56,196 INFO L125 PetriNetUnfolderBase]: For 17578/18798 co-relation queries the response was YES. [2025-03-17 19:41:56,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144032 conditions, 75807 events. 40004/75807 cut-off events. For 17578/18798 co-relation queries the response was YES. Maximal size of possible extension queue 2804. Compared 786599 event pairs, 29551 based on Foata normal form. 2/62707 useless extension candidates. Maximal degree in co-relation 143998. Up to 53437 conditions per place. [2025-03-17 19:41:56,669 INFO L140 encePairwiseOnDemand]: 109/113 looper letters, 60 selfloop transitions, 10 changer transitions 0/119 dead transitions. [2025-03-17 19:41:56,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 119 transitions, 487 flow [2025-03-17 19:41:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:41:56,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:41:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 426 transitions. [2025-03-17 19:41:56,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.538558786346397 [2025-03-17 19:41:56,671 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 355 flow. Second operand 7 states and 426 transitions. [2025-03-17 19:41:56,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 119 transitions, 487 flow [2025-03-17 19:41:56,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 119 transitions, 487 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:41:56,686 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 367 flow [2025-03-17 19:41:56,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2025-03-17 19:41:56,687 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 29 predicate places. [2025-03-17 19:41:56,687 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 367 flow [2025-03-17 19:41:56,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 53.54545454545455) internal successors, (589), 11 states have internal predecessors, (589), 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 19:41:56,688 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:56,688 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:41:56,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 19:41:56,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:41:56,888 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-17 19:41:56,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:56,889 INFO L85 PathProgramCache]: Analyzing trace with hash 619098779, now seen corresponding path program 2 times [2025-03-17 19:41:56,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:56,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905994366] [2025-03-17 19:41:56,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:41:56,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:56,897 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:41:56,900 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:41:56,900 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:41:56,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:56,934 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 19:41:56,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:56,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905994366] [2025-03-17 19:41:56,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905994366] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:41:56,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630610194] [2025-03-17 19:41:56,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:41:56,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:41:56,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:41:56,937 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 19:41:56,938 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 19:41:56,979 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:41:56,986 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:41:56,986 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:41:56,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:56,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:41:56,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:41:57,014 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 19:41:57,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:41:57,042 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 19:41:57,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630610194] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:41:57,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:41:57,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-03-17 19:41:57,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300733929] [2025-03-17 19:41:57,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:41:57,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:41:57,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:57,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:41:57,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:41:57,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-17 19:41:57,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 367 flow. Second operand has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 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 19:41:57,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:57,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-17 19:41:57,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:01,367 INFO L124 PetriNetUnfolderBase]: 40004/75806 cut-off events. [2025-03-17 19:42:01,367 INFO L125 PetriNetUnfolderBase]: For 17593/18813 co-relation queries the response was YES. [2025-03-17 19:42:01,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144037 conditions, 75806 events. 40004/75806 cut-off events. For 17593/18813 co-relation queries the response was YES. Maximal size of possible extension queue 2804. Compared 786428 event pairs, 29551 based on Foata normal form. 1/62706 useless extension candidates. Maximal degree in co-relation 144004. Up to 53434 conditions per place. [2025-03-17 19:42:01,818 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 56 selfloop transitions, 13 changer transitions 0/118 dead transitions. [2025-03-17 19:42:01,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 118 transitions, 495 flow [2025-03-17 19:42:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:01,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:01,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2025-03-17 19:42:01,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.581858407079646 [2025-03-17 19:42:01,819 INFO L175 Difference]: Start difference. First operand has 131 places, 119 transitions, 367 flow. Second operand 4 states and 263 transitions. [2025-03-17 19:42:01,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 118 transitions, 495 flow [2025-03-17 19:42:01,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 118 transitions, 477 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-03-17 19:42:01,837 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 365 flow [2025-03-17 19:42:01,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=365, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2025-03-17 19:42:01,837 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 23 predicate places. [2025-03-17 19:42:01,837 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 365 flow [2025-03-17 19:42:01,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 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 19:42:01,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:01,838 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:01,843 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 19:42:02,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:42:02,038 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-17 19:42:02,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:02,039 INFO L85 PathProgramCache]: Analyzing trace with hash 893438087, now seen corresponding path program 2 times [2025-03-17 19:42:02,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:02,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467829876] [2025-03-17 19:42:02,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:42:02,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:02,048 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-17 19:42:02,065 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:42:02,065 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:42:02,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:42:02,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:02,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467829876] [2025-03-17 19:42:02,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467829876] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:42:02,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228696577] [2025-03-17 19:42:02,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:42:02,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:42:02,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:42:02,141 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 19:42:02,143 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 19:42:02,193 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-17 19:42:02,213 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:42:02,213 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:42:02,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:02,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:42:02,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:42:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 19:42:02,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:42:02,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228696577] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:02,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:42:02,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-17 19:42:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241316938] [2025-03-17 19:42:02,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:02,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:42:02,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:02,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:42:02,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:42:02,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 113 [2025-03-17 19:42:02,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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 19:42:02,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:02,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 113 [2025-03-17 19:42:02,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand