./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/26_stack_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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/pthread-ext/26_stack_cas.i -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 3df48c747d95355ac505f3aa498934ae4a3962ec64d7e6dbfdd54f02fbeda355 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:23:00,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:23:01,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:23:01,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:23:01,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:23:01,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:23:01,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:23:01,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:23:01,069 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:23:01,070 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:23:01,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:23:01,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:23:01,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:23:01,071 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:23:01,071 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:23:01,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:23:01,072 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:23:01,073 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:23:01,073 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:23:01,073 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:23:01,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:23:01,074 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 -> 3df48c747d95355ac505f3aa498934ae4a3962ec64d7e6dbfdd54f02fbeda355 [2025-03-09 06:23:01,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:23:01,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:23:01,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:23:01,316 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:23:01,316 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:23:01,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/26_stack_cas.i [2025-03-09 06:23:02,446 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a52b2816/7ffc832b491446a1a8e2bcef445a43a1/FLAG963599f60 [2025-03-09 06:23:02,694 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:23:02,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas.i [2025-03-09 06:23:02,707 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a52b2816/7ffc832b491446a1a8e2bcef445a43a1/FLAG963599f60 [2025-03-09 06:23:03,002 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a52b2816/7ffc832b491446a1a8e2bcef445a43a1 [2025-03-09 06:23:03,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:23:03,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:23:03,006 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:23:03,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:23:03,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:23:03,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d21bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03, skipping insertion in model container [2025-03-09 06:23:03,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:23:03,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:23:03,305 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:23:03,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:23:03,381 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:23:03,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03 WrapperNode [2025-03-09 06:23:03,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:23:03,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:23:03,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:23:03,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:23:03,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,412 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 255 [2025-03-09 06:23:03,413 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:23:03,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:23:03,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:23:03,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:23:03,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,432 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 6, 4, 12]. 50 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 1, 1, 2]. The 9 writes are split as follows [0, 2, 2, 5]. [2025-03-09 06:23:03,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,437 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:23:03,442 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:23:03,442 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:23:03,442 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:23:03,442 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (1/1) ... [2025-03-09 06:23:03,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:23:03,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:23:03,476 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) [2025-03-09 06:23:03,478 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 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-09 06:23:03,492 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:23:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:23:03,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:23:03,493 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:23:03,594 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:23:03,596 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:23:03,884 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:23:03,884 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:23:04,163 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:23:04,164 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:23:04,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:23:04 BoogieIcfgContainer [2025-03-09 06:23:04,165 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:23:04,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:23:04,166 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:23:04,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:23:04,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:23:03" (1/3) ... [2025-03-09 06:23:04,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b059381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:23:04, skipping insertion in model container [2025-03-09 06:23:04,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:23:03" (2/3) ... [2025-03-09 06:23:04,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b059381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:23:04, skipping insertion in model container [2025-03-09 06:23:04,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:23:04" (3/3) ... [2025-03-09 06:23:04,171 INFO L128 eAbstractionObserver]: Analyzing ICFG 26_stack_cas.i [2025-03-09 06:23:04,183 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:23:04,184 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 26_stack_cas.i that has 2 procedures, 47 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2025-03-09 06:23:04,184 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:23:04,232 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:23:04,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 53 transitions, 110 flow [2025-03-09 06:23:04,281 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2025-03-09 06:23:04,282 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:23:04,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 55 events. 6/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 50. Up to 3 conditions per place. [2025-03-09 06:23:04,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 53 transitions, 110 flow [2025-03-09 06:23:04,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 53 transitions, 110 flow [2025-03-09 06:23:04,291 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:23:04,300 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;@62c2eec8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:23:04,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-09 06:23:04,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:23:04,307 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-09 06:23:04,307 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:23:04,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:23:04,307 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:23:04,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-09 06:23:04,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:23:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2053901624, now seen corresponding path program 1 times [2025-03-09 06:23:04,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:23:04,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622653371] [2025-03-09 06:23:04,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:23:04,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:23:04,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:23:04,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:23:04,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:23:04,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:23:04,661 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:23:04,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:23:04,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:23:04,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:23:04,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:23:04,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:23:04,715 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:23:04,716 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-03-09 06:23:04,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2025-03-09 06:23:04,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2025-03-09 06:23:04,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2025-03-09 06:23:04,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2025-03-09 06:23:04,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2025-03-09 06:23:04,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2025-03-09 06:23:04,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2025-03-09 06:23:04,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2025-03-09 06:23:04,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2025-03-09 06:23:04,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2025-03-09 06:23:04,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2025-03-09 06:23:04,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2025-03-09 06:23:04,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2025-03-09 06:23:04,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2025-03-09 06:23:04,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2025-03-09 06:23:04,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2025-03-09 06:23:04,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2025-03-09 06:23:04,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2025-03-09 06:23:04,722 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2025-03-09 06:23:04,722 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2025-03-09 06:23:04,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:23:04,722 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-09 06:23:04,724 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:23:04,726 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-09 06:23:04,768 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:23:04,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 101 transitions, 212 flow [2025-03-09 06:23:04,799 INFO L124 PetriNetUnfolderBase]: 12/106 cut-off events. [2025-03-09 06:23:04,799 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:23:04,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 106 events. 12/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 250 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 97. Up to 3 conditions per place. [2025-03-09 06:23:04,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 101 transitions, 212 flow [2025-03-09 06:23:04,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 101 transitions, 212 flow [2025-03-09 06:23:04,803 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:23:04,803 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;@62c2eec8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:23:04,803 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2025-03-09 06:23:04,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:23:04,807 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2025-03-09 06:23:04,807 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:23:04,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:23:04,807 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-09 06:23:04,808 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-09 06:23:04,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:23:04,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1578242400, now seen corresponding path program 1 times [2025-03-09 06:23:04,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:23:04,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373429462] [2025-03-09 06:23:04,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:23:04,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:23:05,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:23:05,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:23:05,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:23:05,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:23:05,082 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:23:05,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:23:05,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:23:05,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:23:05,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:23:05,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:23:05,117 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:23:05,117 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2025-03-09 06:23:05,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2025-03-09 06:23:05,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2025-03-09 06:23:05,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2025-03-09 06:23:05,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2025-03-09 06:23:05,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2025-03-09 06:23:05,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2025-03-09 06:23:05,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2025-03-09 06:23:05,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2025-03-09 06:23:05,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2025-03-09 06:23:05,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2025-03-09 06:23:05,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2025-03-09 06:23:05,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2025-03-09 06:23:05,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2025-03-09 06:23:05,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2025-03-09 06:23:05,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2025-03-09 06:23:05,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2025-03-09 06:23:05,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2025-03-09 06:23:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2025-03-09 06:23:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2025-03-09 06:23:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2025-03-09 06:23:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2025-03-09 06:23:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2025-03-09 06:23:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2025-03-09 06:23:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2025-03-09 06:23:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2025-03-09 06:23:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2025-03-09 06:23:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2025-03-09 06:23:05,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2025-03-09 06:23:05,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2025-03-09 06:23:05,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2025-03-09 06:23:05,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:23:05,120 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-09 06:23:05,120 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:23:05,120 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-09 06:23:05,172 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:23:05,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 149 transitions, 316 flow [2025-03-09 06:23:05,215 INFO L124 PetriNetUnfolderBase]: 18/157 cut-off events. [2025-03-09 06:23:05,216 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:23:05,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 157 events. 18/157 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 521 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 144. Up to 4 conditions per place. [2025-03-09 06:23:05,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 149 transitions, 316 flow [2025-03-09 06:23:05,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 149 transitions, 316 flow [2025-03-09 06:23:05,224 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:23:05,224 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;@62c2eec8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:23:05,224 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-03-09 06:23:05,233 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:23:05,234 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2025-03-09 06:23:05,234 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:23:05,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:23:05,234 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:23:05,234 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-03-09 06:23:05,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:23:05,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1116514346, now seen corresponding path program 1 times [2025-03-09 06:23:05,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:23:05,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598960688] [2025-03-09 06:23:05,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:23:05,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:23:05,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:23:05,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:23:05,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:23:05,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:23:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:23:05,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:23:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598960688] [2025-03-09 06:23:05,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598960688] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:23:05,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:23:05,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:23:05,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306411049] [2025-03-09 06:23:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:23:05,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:23:05,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:23:05,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:23:05,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:23:05,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 149 [2025-03-09 06:23:05,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 149 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2025-03-09 06:23:05,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:23:05,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 149 [2025-03-09 06:23:05,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:23:18,747 INFO L124 PetriNetUnfolderBase]: 162649/248508 cut-off events. [2025-03-09 06:23:18,748 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2025-03-09 06:23:19,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466125 conditions, 248508 events. 162649/248508 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 7724. Compared 2243414 event pairs, 54853 based on Foata normal form. 3630/225426 useless extension candidates. Maximal degree in co-relation 360633. Up to 206614 conditions per place. [2025-03-09 06:23:20,273 INFO L140 encePairwiseOnDemand]: 117/149 looper letters, 117 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2025-03-09 06:23:20,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 173 transitions, 618 flow [2025-03-09 06:23:20,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:23:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:23:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2025-03-09 06:23:20,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6912751677852349 [2025-03-09 06:23:20,284 INFO L175 Difference]: Start difference. First operand has 138 places, 149 transitions, 316 flow. Second operand 3 states and 309 transitions. [2025-03-09 06:23:20,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 173 transitions, 618 flow [2025-03-09 06:23:20,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 173 transitions, 614 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-09 06:23:20,299 INFO L231 Difference]: Finished difference. Result has 140 places, 145 transitions, 366 flow [2025-03-09 06:23:20,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=140, PETRI_TRANSITIONS=145} [2025-03-09 06:23:20,303 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2025-03-09 06:23:20,303 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 145 transitions, 366 flow [2025-03-09 06:23:20,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2025-03-09 06:23:20,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:23:20,303 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-03-09 06:23:20,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:23:20,304 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-03-09 06:23:20,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:23:20,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1923737945, now seen corresponding path program 1 times [2025-03-09 06:23:20,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:23:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728373212] [2025-03-09 06:23:20,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:23:20,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:23:20,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:23:20,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:23:20,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:23:20,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:23:20,701 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:23:20,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:23:20,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:23:20,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:23:20,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:23:20,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:23:20,736 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:23:20,736 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2025-03-09 06:23:20,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2025-03-09 06:23:20,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2025-03-09 06:23:20,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2025-03-09 06:23:20,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2025-03-09 06:23:20,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2025-03-09 06:23:20,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2025-03-09 06:23:20,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2025-03-09 06:23:20,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2025-03-09 06:23:20,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2025-03-09 06:23:20,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2025-03-09 06:23:20,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2025-03-09 06:23:20,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2025-03-09 06:23:20,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2025-03-09 06:23:20,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2025-03-09 06:23:20,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:23:20,738 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-09 06:23:20,741 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:23:20,741 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-09 06:23:20,799 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:23:20,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 197 transitions, 422 flow [2025-03-09 06:23:20,827 INFO L124 PetriNetUnfolderBase]: 24/208 cut-off events. [2025-03-09 06:23:20,828 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-09 06:23:20,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 208 events. 24/208 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 788 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 191. Up to 5 conditions per place. [2025-03-09 06:23:20,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 197 transitions, 422 flow [2025-03-09 06:23:20,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 197 transitions, 422 flow [2025-03-09 06:23:20,833 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:23:20,834 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;@62c2eec8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:23:20,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-03-09 06:23:20,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:23:20,839 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2025-03-09 06:23:20,839 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-03-09 06:23:20,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:23:20,839 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:23:20,839 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-03-09 06:23:20,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:23:20,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2136112906, now seen corresponding path program 1 times [2025-03-09 06:23:20,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:23:20,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770253670] [2025-03-09 06:23:20,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:23:20,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:23:20,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:23:20,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:23:20,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:23:20,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:23:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:23:21,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:23:21,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770253670] [2025-03-09 06:23:21,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770253670] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:23:21,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:23:21,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:23:21,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399863801] [2025-03-09 06:23:21,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:23:21,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:23:21,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:23:21,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:23:21,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:23:21,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 197 [2025-03-09 06:23:21,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 197 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2025-03-09 06:23:21,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:23:21,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 197 [2025-03-09 06:23:21,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand