./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/unroll-4.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/unroll-4.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 bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:47:41,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:47:41,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:47:41,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:47:41,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:47:41,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:47:41,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:47:41,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:47:41,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:47:41,335 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:47:41,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:47:41,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:47:41,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:47:41,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:47:41,336 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:47:41,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:47:41,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:47:41,337 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:47:41,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:47:41,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:47:41,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:47:41,337 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:47:41,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:47:41,337 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:47:41,337 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:47:41,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:47:41,338 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:47:41,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:47:41,338 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:47:41,338 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:47:41,338 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:47:41,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:47:41,338 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:47:41,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:47:41,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:47:41,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:47:41,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:47:41,339 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:47:41,339 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:47:41,339 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:47:41,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:47:41,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:47:41,339 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:47:41,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:47:41,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:47:41,340 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 -> bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd [2025-03-17 19:47:41,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:47:41,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:47:41,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:47:41,608 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:47:41,608 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:47:41,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-4.wvr.c [2025-03-17 19:47:42,796 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e244020f0/d9d6da96ef854eb8abc9d81954410045/FLAG1604e2bdc [2025-03-17 19:47:43,035 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:47:43,036 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c [2025-03-17 19:47:43,051 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e244020f0/d9d6da96ef854eb8abc9d81954410045/FLAG1604e2bdc [2025-03-17 19:47:43,382 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e244020f0/d9d6da96ef854eb8abc9d81954410045 [2025-03-17 19:47:43,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:47:43,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:47:43,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:47:43,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:47:43,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:47:43,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b84aff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43, skipping insertion in model container [2025-03-17 19:47:43,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:47:43,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:47:43,534 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:47:43,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:47:43,565 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:47:43,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43 WrapperNode [2025-03-17 19:47:43,566 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:47:43,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:47:43,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:47:43,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:47:43,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,588 INFO L138 Inliner]: procedures = 23, calls = 27, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 142 [2025-03-17 19:47:43,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:47:43,589 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:47:43,589 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:47:43,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:47:43,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,596 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,608 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 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 19:47:43,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,614 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:47:43,620 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:47:43,620 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:47:43,620 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:47:43,621 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (1/1) ... [2025-03-17 19:47:43,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:47:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:43,643 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 19:47:43,645 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 19:47:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:47:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:47:43,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:47:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:47:43,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:47:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:47:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:47:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:47:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:47:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:47:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:47:43,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:47:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:47:43,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:47:43,662 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 19:47:43,729 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:47:43,730 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:47:43,996 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:47:43,996 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:47:44,179 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:47:44,179 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:47:44,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:47:44 BoogieIcfgContainer [2025-03-17 19:47:44,180 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:47:44,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:47:44,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:47:44,185 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:47:44,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:47:43" (1/3) ... [2025-03-17 19:47:44,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94d9f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:47:44, skipping insertion in model container [2025-03-17 19:47:44,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:47:43" (2/3) ... [2025-03-17 19:47:44,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94d9f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:47:44, skipping insertion in model container [2025-03-17 19:47:44,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:47:44" (3/3) ... [2025-03-17 19:47:44,188 INFO L128 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2025-03-17 19:47:44,199 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:47:44,201 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unroll-4.wvr.c that has 3 procedures, 20 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-03-17 19:47:44,201 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:47:44,245 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:47:44,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 58 flow [2025-03-17 19:47:44,294 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-03-17 19:47:44,296 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:47:44,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 3/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2025-03-17 19:47:44,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 22 transitions, 58 flow [2025-03-17 19:47:44,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 6 places, 6 transitions, 12 flow [2025-03-17 19:47:44,310 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:47:44,321 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;@226ad623, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:47:44,322 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 19:47:44,325 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:47:44,327 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2025-03-17 19:47:44,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:47:44,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:44,327 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:47:44,328 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 19:47:44,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:44,332 INFO L85 PathProgramCache]: Analyzing trace with hash 395264, now seen corresponding path program 1 times [2025-03-17 19:47:44,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:44,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007647296] [2025-03-17 19:47:44,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:44,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:44,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:47:44,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:47:44,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:44,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:44,565 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 19:47:44,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:44,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007647296] [2025-03-17 19:47:44,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007647296] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:44,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:47:44,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:47:44,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158384243] [2025-03-17 19:47:44,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:44,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:44,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:44,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:44,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:44,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 19:47:44,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 6 places, 6 transitions, 12 flow. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 19:47:44,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:44,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 19:47:44,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:44,638 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2025-03-17 19:47:44,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:47:44,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2025-03-17 19:47:44,640 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 4 selfloop transitions, 3 changer transitions 0/8 dead transitions. [2025-03-17 19:47:44,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 8 transitions, 30 flow [2025-03-17 19:47:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2025-03-17 19:47:44,652 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.23863636363636365 [2025-03-17 19:47:44,653 INFO L175 Difference]: Start difference. First operand has 6 places, 6 transitions, 12 flow. Second operand 4 states and 21 transitions. [2025-03-17 19:47:44,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 8 transitions, 30 flow [2025-03-17 19:47:44,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 8 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:47:44,657 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 34 flow [2025-03-17 19:47:44,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=34, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2025-03-17 19:47:44,663 INFO L279 CegarLoopForPetriNet]: 6 programPoint places, 5 predicate places. [2025-03-17 19:47:44,664 INFO L471 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 34 flow [2025-03-17 19:47:44,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 19:47:44,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:44,664 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:47:44,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:47:44,665 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 19:47:44,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:44,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1109242928, now seen corresponding path program 1 times [2025-03-17 19:47:44,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:44,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686843665] [2025-03-17 19:47:44,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:44,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:44,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:47:44,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:47:44,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:44,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:44,762 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 19:47:44,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:44,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686843665] [2025-03-17 19:47:44,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686843665] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:44,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005776478] [2025-03-17 19:47:44,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:44,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:44,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:44,765 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 19:47:44,767 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 19:47:44,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:47:44,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:47:44,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:44,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:44,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:47:44,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:44,877 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 19:47:44,878 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:47:44,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005776478] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:47:44,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:47:44,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:47:44,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015463124] [2025-03-17 19:47:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:47:44,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:47:44,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:44,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:47:44,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:47:44,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 19:47:44,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 34 flow. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 19:47:44,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:44,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 19:47:44,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:44,923 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2025-03-17 19:47:44,923 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:47:44,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 8 events. 1/8 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 10. Up to 4 conditions per place. [2025-03-17 19:47:44,923 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 1 selfloop transitions, 5 changer transitions 0/7 dead transitions. [2025-03-17 19:47:44,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 7 transitions, 42 flow [2025-03-17 19:47:44,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:47:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:47:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2025-03-17 19:47:44,924 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.1893939393939394 [2025-03-17 19:47:44,925 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 34 flow. Second operand 6 states and 25 transitions. [2025-03-17 19:47:44,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 7 transitions, 42 flow [2025-03-17 19:47:44,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 7 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:47:44,926 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 38 flow [2025-03-17 19:47:44,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=38, PETRI_PLACES=14, PETRI_TRANSITIONS=7} [2025-03-17 19:47:44,926 INFO L279 CegarLoopForPetriNet]: 6 programPoint places, 8 predicate places. [2025-03-17 19:47:44,926 INFO L471 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 38 flow [2025-03-17 19:47:44,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 19:47:44,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:44,927 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:47:44,934 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 19:47:45,131 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 19:47:45,131 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 19:47:45,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash -26792050, now seen corresponding path program 1 times [2025-03-17 19:47:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:45,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307163368] [2025-03-17 19:47:45,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:45,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:45,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:47:45,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:47:45,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:45,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:45,238 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 19:47:45,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307163368] [2025-03-17 19:47:45,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307163368] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710280434] [2025-03-17 19:47:45,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:47:45,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:45,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:45,240 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 19:47:45,242 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 19:47:45,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:47:45,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:47:45,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:47:45,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:45,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:47:45,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:45,307 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 19:47:45,307 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:45,341 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 19:47:45,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710280434] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:45,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:45,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:47:45,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112406879] [2025-03-17 19:47:45,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:45,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:47:45,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:45,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:47:45,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:47:45,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 19:47:45,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 38 flow. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 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 19:47:45,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:45,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 19:47:45,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:45,423 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2025-03-17 19:47:45,423 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-17 19:47:45,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 17 events. 1/17 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 8. Up to 7 conditions per place. [2025-03-17 19:47:45,423 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 3 selfloop transitions, 9 changer transitions 0/13 dead transitions. [2025-03-17 19:47:45,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 98 flow [2025-03-17 19:47:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:47:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:47:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2025-03-17 19:47:45,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.20454545454545456 [2025-03-17 19:47:45,424 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 38 flow. Second operand 10 states and 45 transitions. [2025-03-17 19:47:45,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 98 flow [2025-03-17 19:47:45,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 72 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-17 19:47:45,425 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 82 flow [2025-03-17 19:47:45,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=82, PETRI_PLACES=21, PETRI_TRANSITIONS=13} [2025-03-17 19:47:45,426 INFO L279 CegarLoopForPetriNet]: 6 programPoint places, 15 predicate places. [2025-03-17 19:47:45,426 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 82 flow [2025-03-17 19:47:45,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 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 19:47:45,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:47:45,426 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:47:45,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:47:45,626 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 19:47:45,627 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 19:47:45,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:47:45,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1582719650, now seen corresponding path program 2 times [2025-03-17 19:47:45,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:47:45,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784561485] [2025-03-17 19:47:45,627 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:45,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:47:45,638 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:47:45,644 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:47:45,644 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:45,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:45,711 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 19:47:45,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:47:45,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784561485] [2025-03-17 19:47:45,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784561485] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:47:45,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569639185] [2025-03-17 19:47:45,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:47:45,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:45,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:47:45,714 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 19:47:45,715 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 19:47:45,749 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:47:45,755 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:47:45,756 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:47:45,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:47:45,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:47:45,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:47:45,778 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 19:47:45,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:47:45,797 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 19:47:45,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569639185] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:47:45,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:47:45,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:47:45,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821085508] [2025-03-17 19:47:45,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:47:45,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:47:45,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:47:45,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:47:45,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:47:45,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-17 19:47:45,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 19:47:45,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:47:45,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-17 19:47:45,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:47:45,816 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2025-03-17 19:47:45,816 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2025-03-17 19:47:45,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 16 events. 1/16 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 29. Up to 6 conditions per place. [2025-03-17 19:47:45,816 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2025-03-17 19:47:45,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 12 transitions, 94 flow [2025-03-17 19:47:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:47:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:47:45,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2025-03-17 19:47:45,818 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.18181818181818182 [2025-03-17 19:47:45,818 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 82 flow. Second operand 4 states and 16 transitions. [2025-03-17 19:47:45,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 12 transitions, 94 flow [2025-03-17 19:47:45,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 74 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-03-17 19:47:45,818 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2025-03-17 19:47:45,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2025-03-17 19:47:45,819 INFO L279 CegarLoopForPetriNet]: 6 programPoint places, 11 predicate places. [2025-03-17 19:47:45,819 INFO L471 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2025-03-17 19:47:45,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 19:47:45,821 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2025-03-17 19:47:45,821 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2025-03-17 19:47:45,821 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-17 19:47:45,822 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-17 19:47:45,827 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 19:47:46,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:47:46,023 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2025-03-17 19:47:46,025 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 19:47:46,025 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 19:47:46,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:47:46 BasicIcfg [2025-03-17 19:47:46,028 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 19:47:46,029 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:47:46,029 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:47:46,029 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:47:46,029 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:47:44" (3/4) ... [2025-03-17 19:47:46,030 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 19:47:46,032 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 19:47:46,032 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 19:47:46,035 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 70 nodes and edges [2025-03-17 19:47:46,036 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2025-03-17 19:47:46,036 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-03-17 19:47:46,036 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 19:47:46,086 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:47:46,087 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 19:47:46,087 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:47:46,087 INFO L158 Benchmark]: Toolchain (without parser) took 2701.16ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 87.4MB in the end (delta: 18.6MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2025-03-17 19:47:46,088 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:47:46,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.34ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 94.2MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:47:46,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.29ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 92.6MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:47:46,088 INFO L158 Benchmark]: Boogie Preprocessor took 29.60ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 91.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:47:46,088 INFO L158 Benchmark]: IcfgBuilder took 560.20ms. Allocated memory is still 142.6MB. Free memory was 91.5MB in the beginning and 47.3MB in the end (delta: 44.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-17 19:47:46,088 INFO L158 Benchmark]: TraceAbstraction took 1846.73ms. Allocated memory is still 142.6MB. Free memory was 47.3MB in the beginning and 94.6MB in the end (delta: -47.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:47:46,089 INFO L158 Benchmark]: Witness Printer took 58.32ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 87.4MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:47:46,090 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.34ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 94.2MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.29ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 92.6MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.60ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 91.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 560.20ms. Allocated memory is still 142.6MB. Free memory was 91.5MB in the beginning and 47.3MB in the end (delta: 44.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1846.73ms. Allocated memory is still 142.6MB. Free memory was 47.3MB in the beginning and 94.6MB in the end (delta: -47.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 58.32ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 87.4MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 32 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 98 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 10 mSDtfsCounter, 98 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=3, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 61 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 225 SizeOfPredicates, 9 NumberOfNonLiveVariables, 202 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 68/103 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 19:47:46,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE