./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum.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 e4a4a131c0d4df2db1bf018027395318bc112945cbb20d5c862562c48934e5a1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:45:15,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:45:15,111 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:45:15,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:45:15,119 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:45:15,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:45:15,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:45:15,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:45:15,140 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:45:15,140 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:45:15,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:45:15,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:45:15,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:45:15,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:45:15,141 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:45:15,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:45:15,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:45:15,142 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:45:15,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:45:15,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:45:15,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:45:15,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:45:15,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:45:15,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:45:15,142 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:45:15,142 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:45:15,142 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:45:15,143 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:45:15,143 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:45:15,143 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:45:15,143 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:45:15,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:45:15,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:45:15,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:45:15,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:45:15,144 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:45:15,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:45:15,144 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:45:15,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:45:15,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:45:15,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:45:15,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:45:15,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:45:15,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:45:15,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:45:15,144 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 -> e4a4a131c0d4df2db1bf018027395318bc112945cbb20d5c862562c48934e5a1 [2025-03-17 19:45:15,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:45:15,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:45:15,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:45:15,398 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:45:15,398 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:45:15,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2025-03-17 19:45:16,545 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de75d14f/d568bc730ff4418598338ef6d636496c/FLAGaaef1c0e6 [2025-03-17 19:45:16,780 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:45:16,782 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2025-03-17 19:45:16,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de75d14f/d568bc730ff4418598338ef6d636496c/FLAGaaef1c0e6 [2025-03-17 19:45:17,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de75d14f/d568bc730ff4418598338ef6d636496c [2025-03-17 19:45:17,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:45:17,141 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:45:17,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:45:17,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:45:17,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:45:17,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf32be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17, skipping insertion in model container [2025-03-17 19:45:17,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,167 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:45:17,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:45:17,292 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:45:17,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:45:17,319 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:45:17,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17 WrapperNode [2025-03-17 19:45:17,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:45:17,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:45:17,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:45:17,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:45:17,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,361 INFO L138 Inliner]: procedures = 22, calls = 32, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 345 [2025-03-17 19:45:17,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:45:17,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:45:17,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:45:17,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:45:17,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,372 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,387 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-17 19:45:17,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,396 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,399 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:45:17,403 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:45:17,403 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:45:17,403 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:45:17,404 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (1/1) ... [2025-03-17 19:45:17,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:45:17,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:17,442 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 19:45:17,445 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 19:45:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:45:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:45:17,467 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:45:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:45:17,467 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:45:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:45:17,467 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:45:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:45:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:45:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:45:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:45:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:45:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:45:17,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:45:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:45:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:45:17,469 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 19:45:17,555 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:45:17,558 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:45:18,095 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:45:18,095 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:45:18,337 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:45:18,337 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:45:18,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:45:18 BoogieIcfgContainer [2025-03-17 19:45:18,338 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:45:18,339 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:45:18,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:45:18,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:45:18,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:45:17" (1/3) ... [2025-03-17 19:45:18,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105ce18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:45:18, skipping insertion in model container [2025-03-17 19:45:18,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:45:17" (2/3) ... [2025-03-17 19:45:18,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105ce18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:45:18, skipping insertion in model container [2025-03-17 19:45:18,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:45:18" (3/3) ... [2025-03-17 19:45:18,345 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2025-03-17 19:45:18,356 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:45:18,357 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-array-sum.wvr.c that has 4 procedures, 143 locations, 1 initial locations, 5 loop locations, and 46 error locations. [2025-03-17 19:45:18,357 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:45:18,427 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:45:18,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 339 flow [2025-03-17 19:45:18,506 INFO L124 PetriNetUnfolderBase]: 17/156 cut-off events. [2025-03-17 19:45:18,508 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:45:18,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 17/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 643 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2025-03-17 19:45:18,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 159 transitions, 339 flow [2025-03-17 19:45:18,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 154 transitions, 323 flow [2025-03-17 19:45:18,526 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:45:18,533 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;@26a443f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:45:18,533 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2025-03-17 19:45:18,538 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:45:18,538 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:45:18,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:45:18,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:18,539 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:45:18,539 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2025-03-17 19:45:18,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:18,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1032808, now seen corresponding path program 1 times [2025-03-17 19:45:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:18,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419546589] [2025-03-17 19:45:18,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:18,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:18,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:45:18,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:45:18,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:18,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:45:18,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:18,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419546589] [2025-03-17 19:45:18,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419546589] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:18,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:18,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:45:18,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78034301] [2025-03-17 19:45:18,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:18,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:45:18,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:18,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:45:18,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:45:18,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 159 [2025-03-17 19:45:18,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 154 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 19:45:18,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:18,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 159 [2025-03-17 19:45:18,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:22,131 INFO L124 PetriNetUnfolderBase]: 20061/40314 cut-off events. [2025-03-17 19:45:22,131 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2025-03-17 19:45:22,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67135 conditions, 40314 events. 20061/40314 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 408357 event pairs, 13610 based on Foata normal form. 2/33008 useless extension candidates. Maximal degree in co-relation 65027. Up to 26238 conditions per place. [2025-03-17 19:45:22,407 INFO L140 encePairwiseOnDemand]: 148/159 looper letters, 64 selfloop transitions, 7 changer transitions 0/160 dead transitions. [2025-03-17 19:45:22,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 160 transitions, 477 flow [2025-03-17 19:45:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:45:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:45:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2025-03-17 19:45:22,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6965408805031447 [2025-03-17 19:45:22,420 INFO L175 Difference]: Start difference. First operand has 147 places, 154 transitions, 323 flow. Second operand 4 states and 443 transitions. [2025-03-17 19:45:22,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 160 transitions, 477 flow [2025-03-17 19:45:22,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 160 transitions, 468 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:45:22,478 INFO L231 Difference]: Finished difference. Result has 148 places, 160 transitions, 374 flow [2025-03-17 19:45:22,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=148, PETRI_TRANSITIONS=160} [2025-03-17 19:45:22,485 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 1 predicate places. [2025-03-17 19:45:22,486 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 160 transitions, 374 flow [2025-03-17 19:45:22,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 19:45:22,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:22,487 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:45:22,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:45:22,487 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2025-03-17 19:45:22,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:22,488 INFO L85 PathProgramCache]: Analyzing trace with hash 704479572, now seen corresponding path program 1 times [2025-03-17 19:45:22,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:22,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726016132] [2025-03-17 19:45:22,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:22,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:22,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:45:22,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:45:22,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:22,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:22,619 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 19:45:22,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:22,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726016132] [2025-03-17 19:45:22,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726016132] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:22,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437573559] [2025-03-17 19:45:22,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:22,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:22,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:22,625 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 19:45:22,636 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 19:45:22,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:45:22,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:45:22,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:22,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:22,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:45:22,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:22,746 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 19:45:22,746 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:45:22,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437573559] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:22,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:45:22,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:45:22,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701040537] [2025-03-17 19:45:22,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:22,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:45:22,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:22,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:45:22,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:45:22,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 159 [2025-03-17 19:45:22,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 160 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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 19:45:22,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:22,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 159 [2025-03-17 19:45:22,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:25,042 INFO L124 PetriNetUnfolderBase]: 20061/40312 cut-off events. [2025-03-17 19:45:25,043 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2025-03-17 19:45:25,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66926 conditions, 40312 events. 20061/40312 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 408320 event pairs, 13610 based on Foata normal form. 2/33009 useless extension candidates. Maximal degree in co-relation 66876. Up to 26228 conditions per place. [2025-03-17 19:45:25,405 INFO L140 encePairwiseOnDemand]: 150/159 looper letters, 57 selfloop transitions, 12 changer transitions 0/158 dead transitions. [2025-03-17 19:45:25,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 158 transitions, 504 flow [2025-03-17 19:45:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:45:25,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:45:25,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 623 transitions. [2025-03-17 19:45:25,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6530398322851153 [2025-03-17 19:45:25,410 INFO L175 Difference]: Start difference. First operand has 148 places, 160 transitions, 374 flow. Second operand 6 states and 623 transitions. [2025-03-17 19:45:25,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 158 transitions, 504 flow [2025-03-17 19:45:25,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 158 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:45:25,416 INFO L231 Difference]: Finished difference. Result has 151 places, 158 transitions, 390 flow [2025-03-17 19:45:25,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=390, PETRI_PLACES=151, PETRI_TRANSITIONS=158} [2025-03-17 19:45:25,417 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 4 predicate places. [2025-03-17 19:45:25,417 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 158 transitions, 390 flow [2025-03-17 19:45:25,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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 19:45:25,418 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:25,418 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:45:25,425 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 19:45:25,619 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 19:45:25,619 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2025-03-17 19:45:25,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:25,619 INFO L85 PathProgramCache]: Analyzing trace with hash 364031120, now seen corresponding path program 1 times [2025-03-17 19:45:25,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:25,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592195896] [2025-03-17 19:45:25,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:25,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:25,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:45:25,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:45:25,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:25,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:25,709 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 19:45:25,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:25,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592195896] [2025-03-17 19:45:25,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592195896] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:25,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837023996] [2025-03-17 19:45:25,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:25,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:25,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:25,712 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 19:45:25,713 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 19:45:25,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:45:25,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:45:25,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:25,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:25,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:45:25,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:25,792 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 19:45:25,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:25,821 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 19:45:25,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837023996] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:25,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:25,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:45:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129743843] [2025-03-17 19:45:25,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:25,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:45:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:25,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:45:25,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:45:25,843 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 159 [2025-03-17 19:45:25,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 158 transitions, 390 flow. Second operand has 12 states, 12 states have (on average 93.08333333333333) internal successors, (1117), 12 states have internal predecessors, (1117), 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 19:45:25,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:25,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 159 [2025-03-17 19:45:25,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:27,878 INFO L124 PetriNetUnfolderBase]: 20067/40336 cut-off events. [2025-03-17 19:45:27,878 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2025-03-17 19:45:27,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67020 conditions, 40336 events. 20067/40336 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 1295. Compared 408210 event pairs, 13610 based on Foata normal form. 6/33036 useless extension candidates. Maximal degree in co-relation 66878. Up to 26239 conditions per place. [2025-03-17 19:45:28,114 INFO L140 encePairwiseOnDemand]: 150/159 looper letters, 62 selfloop transitions, 25 changer transitions 0/176 dead transitions. [2025-03-17 19:45:28,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 176 transitions, 678 flow [2025-03-17 19:45:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:45:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:45:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1013 transitions. [2025-03-17 19:45:28,120 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6371069182389937 [2025-03-17 19:45:28,121 INFO L175 Difference]: Start difference. First operand has 151 places, 158 transitions, 390 flow. Second operand 10 states and 1013 transitions. [2025-03-17 19:45:28,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 176 transitions, 678 flow [2025-03-17 19:45:28,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 176 transitions, 620 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-17 19:45:28,128 INFO L231 Difference]: Finished difference. Result has 158 places, 176 transitions, 530 flow [2025-03-17 19:45:28,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=530, PETRI_PLACES=158, PETRI_TRANSITIONS=176} [2025-03-17 19:45:28,129 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 11 predicate places. [2025-03-17 19:45:28,129 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 176 transitions, 530 flow [2025-03-17 19:45:28,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.08333333333333) internal successors, (1117), 12 states have internal predecessors, (1117), 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 19:45:28,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:28,129 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:28,138 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 19:45:28,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-17 19:45:28,330 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2025-03-17 19:45:28,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:28,331 INFO L85 PathProgramCache]: Analyzing trace with hash -10018950, now seen corresponding path program 1 times [2025-03-17 19:45:28,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:28,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453786685] [2025-03-17 19:45:28,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:28,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:28,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:45:28,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:45:28,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:28,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:28,392 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 19:45:28,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:28,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453786685] [2025-03-17 19:45:28,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453786685] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:28,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:28,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:45:28,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134428735] [2025-03-17 19:45:28,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:28,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:45:28,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:28,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:45:28,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:45:28,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 159 [2025-03-17 19:45:28,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 176 transitions, 530 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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 19:45:28,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:28,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 159 [2025-03-17 19:45:28,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:32,621 INFO L124 PetriNetUnfolderBase]: 44387/76808 cut-off events. [2025-03-17 19:45:32,621 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2025-03-17 19:45:32,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136201 conditions, 76808 events. 44387/76808 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 2323. Compared 726060 event pairs, 12914 based on Foata normal form. 2184/66626 useless extension candidates. Maximal degree in co-relation 136134. Up to 26716 conditions per place. [2025-03-17 19:45:33,133 INFO L140 encePairwiseOnDemand]: 144/159 looper letters, 167 selfloop transitions, 10 changer transitions 0/256 dead transitions. [2025-03-17 19:45:33,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 256 transitions, 1050 flow [2025-03-17 19:45:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:45:33,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:45:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2025-03-17 19:45:33,135 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7783018867924528 [2025-03-17 19:45:33,135 INFO L175 Difference]: Start difference. First operand has 158 places, 176 transitions, 530 flow. Second operand 4 states and 495 transitions. [2025-03-17 19:45:33,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 256 transitions, 1050 flow [2025-03-17 19:45:33,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 256 transitions, 1026 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-17 19:45:33,138 INFO L231 Difference]: Finished difference. Result has 160 places, 180 transitions, 572 flow [2025-03-17 19:45:33,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=572, PETRI_PLACES=160, PETRI_TRANSITIONS=180} [2025-03-17 19:45:33,139 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 13 predicate places. [2025-03-17 19:45:33,139 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 180 transitions, 572 flow [2025-03-17 19:45:33,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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 19:45:33,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:33,140 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:33,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:45:33,140 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2025-03-17 19:45:33,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:33,140 INFO L85 PathProgramCache]: Analyzing trace with hash -310586441, now seen corresponding path program 1 times [2025-03-17 19:45:33,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:33,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361028021] [2025-03-17 19:45:33,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:33,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:33,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:45:33,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:45:33,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:33,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:33,241 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 19:45:33,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361028021] [2025-03-17 19:45:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361028021] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:33,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:33,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:45:33,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925952181] [2025-03-17 19:45:33,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:33,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:45:33,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:33,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:45:33,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:45:33,244 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 159 [2025-03-17 19:45:33,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 180 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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 19:45:33,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:33,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 159 [2025-03-17 19:45:33,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:36,592 INFO L124 PetriNetUnfolderBase]: 26519/54069 cut-off events. [2025-03-17 19:45:36,592 INFO L125 PetriNetUnfolderBase]: For 10677/12337 co-relation queries the response was YES. [2025-03-17 19:45:36,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97820 conditions, 54069 events. 26519/54069 cut-off events. For 10677/12337 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 578276 event pairs, 18490 based on Foata normal form. 837/45719 useless extension candidates. Maximal degree in co-relation 97753. Up to 34886 conditions per place. [2025-03-17 19:45:36,990 INFO L140 encePairwiseOnDemand]: 153/159 looper letters, 80 selfloop transitions, 7 changer transitions 1/179 dead transitions. [2025-03-17 19:45:36,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 179 transitions, 743 flow [2025-03-17 19:45:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:45:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:45:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 453 transitions. [2025-03-17 19:45:36,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7122641509433962 [2025-03-17 19:45:36,991 INFO L175 Difference]: Start difference. First operand has 160 places, 180 transitions, 572 flow. Second operand 4 states and 453 transitions. [2025-03-17 19:45:36,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 179 transitions, 743 flow [2025-03-17 19:45:37,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 179 transitions, 743 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:45:37,084 INFO L231 Difference]: Finished difference. Result has 164 places, 178 transitions, 579 flow [2025-03-17 19:45:37,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=579, PETRI_PLACES=164, PETRI_TRANSITIONS=178} [2025-03-17 19:45:37,085 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 17 predicate places. [2025-03-17 19:45:37,085 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 178 transitions, 579 flow [2025-03-17 19:45:37,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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 19:45:37,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:37,085 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:37,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:45:37,086 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2025-03-17 19:45:37,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1091159543, now seen corresponding path program 1 times [2025-03-17 19:45:37,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:37,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567623275] [2025-03-17 19:45:37,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:37,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:37,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:45:37,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:45:37,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:37,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:45:37,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:37,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567623275] [2025-03-17 19:45:37,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567623275] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:37,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695464957] [2025-03-17 19:45:37,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:37,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:37,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:37,459 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 19:45:37,461 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 19:45:37,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:45:37,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:45:37,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:37,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:37,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-17 19:45:37,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:37,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 19:45:37,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-17 19:45:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:45:37,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:37,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-17 19:45:37,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-03-17 19:45:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:45:37,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695464957] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:37,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:37,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-03-17 19:45:37,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361407695] [2025-03-17 19:45:37,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:37,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 19:45:37,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:37,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 19:45:37,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2025-03-17 19:45:37,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 159 [2025-03-17 19:45:37,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 178 transitions, 579 flow. Second operand has 15 states, 15 states have (on average 91.66666666666667) internal successors, (1375), 15 states have internal predecessors, (1375), 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 19:45:37,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:37,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 159 [2025-03-17 19:45:37,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:46,802 INFO L124 PetriNetUnfolderBase]: 65715/128659 cut-off events. [2025-03-17 19:45:46,802 INFO L125 PetriNetUnfolderBase]: For 27861/28079 co-relation queries the response was YES. [2025-03-17 19:45:47,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246035 conditions, 128659 events. 65715/128659 cut-off events. For 27861/28079 co-relation queries the response was YES. Maximal size of possible extension queue 2952. Compared 1428378 event pairs, 9334 based on Foata normal form. 218/113789 useless extension candidates. Maximal degree in co-relation 245965. Up to 31822 conditions per place. [2025-03-17 19:45:47,879 INFO L140 encePairwiseOnDemand]: 141/159 looper letters, 234 selfloop transitions, 26 changer transitions 0/347 dead transitions. [2025-03-17 19:45:47,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 347 transitions, 1491 flow [2025-03-17 19:45:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:45:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:45:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1139 transitions. [2025-03-17 19:45:47,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7163522012578616 [2025-03-17 19:45:47,882 INFO L175 Difference]: Start difference. First operand has 164 places, 178 transitions, 579 flow. Second operand 10 states and 1139 transitions. [2025-03-17 19:45:47,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 347 transitions, 1491 flow [2025-03-17 19:45:50,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 347 transitions, 1468 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:45:50,300 INFO L231 Difference]: Finished difference. Result has 171 places, 187 transitions, 690 flow [2025-03-17 19:45:50,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=690, PETRI_PLACES=171, PETRI_TRANSITIONS=187} [2025-03-17 19:45:50,300 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 24 predicate places. [2025-03-17 19:45:50,301 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 187 transitions, 690 flow [2025-03-17 19:45:50,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 91.66666666666667) internal successors, (1375), 15 states have internal predecessors, (1375), 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 19:45:50,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:50,302 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:45:50,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:45:50,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:50,502 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2025-03-17 19:45:50,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:50,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1928200964, now seen corresponding path program 2 times [2025-03-17 19:45:50,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:50,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537608685] [2025-03-17 19:45:50,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:50,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:50,511 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:45:50,516 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:45:50,518 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:45:50,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:50,551 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 19:45:50,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:50,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537608685] [2025-03-17 19:45:50,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537608685] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:45:50,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185805662] [2025-03-17 19:45:50,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:45:50,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:50,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:45:50,557 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 19:45:50,559 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 19:45:50,602 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:45:50,608 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:45:50,609 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:45:50,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:50,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:45:50,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:45:50,635 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 19:45:50,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:45:50,659 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 19:45:50,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185805662] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:45:50,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:45:50,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:45:50,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951567122] [2025-03-17 19:45:50,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:45:50,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:45:50,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:50,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:45:50,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:45:50,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 159 [2025-03-17 19:45:50,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 187 transitions, 690 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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 19:45:50,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:50,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 159 [2025-03-17 19:45:50,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:45:57,874 INFO L124 PetriNetUnfolderBase]: 55471/109931 cut-off events. [2025-03-17 19:45:57,874 INFO L125 PetriNetUnfolderBase]: For 58661/62215 co-relation queries the response was YES. [2025-03-17 19:45:58,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221305 conditions, 109931 events. 55471/109931 cut-off events. For 58661/62215 co-relation queries the response was YES. Maximal size of possible extension queue 2540. Compared 1208978 event pairs, 38874 based on Foata normal form. 1429/95931 useless extension candidates. Maximal degree in co-relation 221236. Up to 72337 conditions per place. [2025-03-17 19:45:59,038 INFO L140 encePairwiseOnDemand]: 154/159 looper letters, 82 selfloop transitions, 15 changer transitions 0/186 dead transitions. [2025-03-17 19:45:59,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 186 transitions, 874 flow [2025-03-17 19:45:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:45:59,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:45:59,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 431 transitions. [2025-03-17 19:45:59,040 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6776729559748428 [2025-03-17 19:45:59,040 INFO L175 Difference]: Start difference. First operand has 171 places, 187 transitions, 690 flow. Second operand 4 states and 431 transitions. [2025-03-17 19:45:59,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 186 transitions, 874 flow [2025-03-17 19:45:59,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 186 transitions, 852 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:45:59,535 INFO L231 Difference]: Finished difference. Result has 169 places, 186 transitions, 688 flow [2025-03-17 19:45:59,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=688, PETRI_PLACES=169, PETRI_TRANSITIONS=186} [2025-03-17 19:45:59,535 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 22 predicate places. [2025-03-17 19:45:59,535 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 186 transitions, 688 flow [2025-03-17 19:45:59,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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 19:45:59,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:45:59,536 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:45:59,541 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 19:45:59,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:45:59,736 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2025-03-17 19:45:59,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:45:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash -749618415, now seen corresponding path program 1 times [2025-03-17 19:45:59,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:45:59,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461591546] [2025-03-17 19:45:59,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:45:59,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:45:59,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:45:59,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:45:59,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:45:59,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:45:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 19:45:59,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:45:59,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461591546] [2025-03-17 19:45:59,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461591546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:45:59,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:45:59,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:45:59,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929551314] [2025-03-17 19:45:59,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:45:59,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:45:59,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:45:59,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:45:59,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:45:59,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 159 [2025-03-17 19:45:59,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 186 transitions, 688 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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 19:45:59,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:45:59,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 159 [2025-03-17 19:45:59,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand