./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.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/goblint-regression/28-race_reach_51-mutexptr_racefree.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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:35:48,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:35:48,361 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:35:48,365 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:35:48,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:35:48,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:35:48,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:35:48,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:35:48,384 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:35:48,384 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:35:48,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:35:48,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:35:48,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:35:48,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:35:48,384 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:35:48,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:35:48,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:35:48,385 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:35:48,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:35:48,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:35:48,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:35:48,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:35:48,385 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:35:48,385 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:35:48,385 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:35:48,385 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:35:48,386 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:35:48,386 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:35:48,386 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:35:48,386 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:35:48,386 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:35:48,386 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:35:48,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:35:48,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:35:48,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:35:48,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:35:48,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:35:48,387 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:35:48,387 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:35:48,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:35:48,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:35:48,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:35:48,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:35:48,387 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:35:48,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:35:48,387 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 -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2025-03-09 06:35:48,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:35:48,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:35:48,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:35:48,597 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:35:48,597 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:35:48,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2025-03-09 06:35:49,713 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72718cc8b/29d6314a7a164902878ff5d264e6ed63/FLAG42573f17f [2025-03-09 06:35:49,996 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:35:49,997 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2025-03-09 06:35:50,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72718cc8b/29d6314a7a164902878ff5d264e6ed63/FLAG42573f17f [2025-03-09 06:35:50,020 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72718cc8b/29d6314a7a164902878ff5d264e6ed63 [2025-03-09 06:35:50,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:35:50,024 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:35:50,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:35:50,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:35:50,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:35:50,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,029 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8928cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50, skipping insertion in model container [2025-03-09 06:35:50,029 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,051 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:35:50,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:35:50,336 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:35:50,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:35:50,416 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:35:50,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50 WrapperNode [2025-03-09 06:35:50,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:35:50,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:35:50,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:35:50,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:35:50,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,448 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 138 [2025-03-09 06:35:50,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:35:50,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:35:50,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:35:50,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:35:50,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,462 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,483 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 5, 6, 2]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 5, 1, 0]. The 3 writes are split as follows [0, 0, 0, 2, 1]. [2025-03-09 06:35:50,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,484 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,491 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:35:50,497 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:35:50,497 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:35:50,497 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:35:50,498 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (1/1) ... [2025-03-09 06:35:50,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:35:50,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:35:50,522 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 06:35:50,524 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 06:35:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-09 06:35:50,542 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:35:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:35:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-09 06:35:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-09 06:35:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-09 06:35:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 06:35:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:35:50,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:35:50,544 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 06:35:50,666 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:35:50,667 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:35:50,839 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-09 06:35:50,840 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L713-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-09 06:35:50,895 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:35:50,895 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:35:51,078 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:35:51,079 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:35:51,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:35:51 BoogieIcfgContainer [2025-03-09 06:35:51,079 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:35:51,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:35:51,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:35:51,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:35:51,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:35:50" (1/3) ... [2025-03-09 06:35:51,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625f74a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:35:51, skipping insertion in model container [2025-03-09 06:35:51,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:35:50" (2/3) ... [2025-03-09 06:35:51,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625f74a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:35:51, skipping insertion in model container [2025-03-09 06:35:51,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:35:51" (3/3) ... [2025-03-09 06:35:51,087 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2025-03-09 06:35:51,097 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:35:51,098 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_51-mutexptr_racefree.i that has 2 procedures, 50 locations, 1 initial locations, 5 loop locations, and 8 error locations. [2025-03-09 06:35:51,099 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:35:51,158 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-09 06:35:51,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 59 transitions, 125 flow [2025-03-09 06:35:51,216 INFO L124 PetriNetUnfolderBase]: 11/74 cut-off events. [2025-03-09 06:35:51,218 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 06:35:51,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 74 events. 11/74 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 223 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2025-03-09 06:35:51,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 59 transitions, 125 flow [2025-03-09 06:35:51,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 58 transitions, 123 flow [2025-03-09 06:35:51,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:35:51,246 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;@727700b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:35:51,246 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-09 06:35:51,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:35:51,252 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-09 06:35:51,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:35:51,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:51,253 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:35:51,253 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:35:51,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:51,257 INFO L85 PathProgramCache]: Analyzing trace with hash 419075545, now seen corresponding path program 1 times [2025-03-09 06:35:51,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:51,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643543896] [2025-03-09 06:35:51,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:51,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:51,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:35:51,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:35:51,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:51,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:51,570 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 06:35:51,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:51,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643543896] [2025-03-09 06:35:51,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643543896] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:51,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:51,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:35:51,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289687711] [2025-03-09 06:35:51,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:51,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:51,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:51,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:51,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:51,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2025-03-09 06:35:51,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 06:35:51,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:51,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2025-03-09 06:35:51,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:51,765 INFO L124 PetriNetUnfolderBase]: 144/398 cut-off events. [2025-03-09 06:35:51,765 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 06:35:51,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 398 events. 144/398 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1877 event pairs, 0 based on Foata normal form. 65/430 useless extension candidates. Maximal degree in co-relation 689. Up to 277 conditions per place. [2025-03-09 06:35:51,768 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 49 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2025-03-09 06:35:51,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 73 transitions, 257 flow [2025-03-09 06:35:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:35:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:35:51,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2025-03-09 06:35:51,778 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.673728813559322 [2025-03-09 06:35:51,779 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 123 flow. Second operand 4 states and 159 transitions. [2025-03-09 06:35:51,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 73 transitions, 257 flow [2025-03-09 06:35:51,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 73 transitions, 257 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:35:51,788 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 113 flow [2025-03-09 06:35:51,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2025-03-09 06:35:51,793 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2025-03-09 06:35:51,793 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 113 flow [2025-03-09 06:35:51,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 06:35:51,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:51,794 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:35:51,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:35:51,794 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-09 06:35:51,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:51,794 INFO L85 PathProgramCache]: Analyzing trace with hash -789987085, now seen corresponding path program 1 times [2025-03-09 06:35:51,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:51,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831901807] [2025-03-09 06:35:51,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:51,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:51,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:35:51,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:35:51,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:51,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:35:51,867 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:35:51,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:35:51,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:35:51,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:51,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:35:51,905 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:35:51,905 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:35:51,907 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-09 06:35:51,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-03-09 06:35:51,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-03-09 06:35:51,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-03-09 06:35:51,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-03-09 06:35:51,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-03-09 06:35:51,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2025-03-09 06:35:51,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2025-03-09 06:35:51,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2025-03-09 06:35:51,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-03-09 06:35:51,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-03-09 06:35:51,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-03-09 06:35:51,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-03-09 06:35:51,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:35:51,910 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-09 06:35:51,913 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:35:51,913 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-09 06:35:51,936 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 06:35:51,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 91 transitions, 198 flow [2025-03-09 06:35:51,958 INFO L124 PetriNetUnfolderBase]: 21/140 cut-off events. [2025-03-09 06:35:51,959 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-09 06:35:51,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 140 events. 21/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 513 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2025-03-09 06:35:51,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 91 transitions, 198 flow [2025-03-09 06:35:51,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 91 transitions, 198 flow [2025-03-09 06:35:51,963 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:35:51,964 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;@727700b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:35:51,964 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-03-09 06:35:51,967 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:35:51,967 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-09 06:35:51,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:35:51,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:51,967 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:35:51,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-09 06:35:51,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash 505946130, now seen corresponding path program 1 times [2025-03-09 06:35:51,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:51,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103933018] [2025-03-09 06:35:51,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:51,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:51,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:35:51,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:35:51,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:51,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:52,043 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 06:35:52,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103933018] [2025-03-09 06:35:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103933018] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:52,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:52,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:35:52,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547743270] [2025-03-09 06:35:52,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:52,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:52,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:52,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:52,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2025-03-09 06:35:52,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 06:35:52,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:52,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2025-03-09 06:35:52,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:53,056 INFO L124 PetriNetUnfolderBase]: 4742/9598 cut-off events. [2025-03-09 06:35:53,056 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2025-03-09 06:35:53,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17188 conditions, 9598 events. 4742/9598 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 75835 event pairs, 2644 based on Foata normal form. 1382/10036 useless extension candidates. Maximal degree in co-relation 3434. Up to 7478 conditions per place. [2025-03-09 06:35:53,174 INFO L140 encePairwiseOnDemand]: 71/91 looper letters, 68 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2025-03-09 06:35:53,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 104 transitions, 366 flow [2025-03-09 06:35:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:35:53,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:35:53,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2025-03-09 06:35:53,178 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6373626373626373 [2025-03-09 06:35:53,180 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 198 flow. Second operand 4 states and 232 transitions. [2025-03-09 06:35:53,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 104 transitions, 366 flow [2025-03-09 06:35:53,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 104 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:35:53,184 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 194 flow [2025-03-09 06:35:53,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2025-03-09 06:35:53,185 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 5 predicate places. [2025-03-09 06:35:53,186 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 194 flow [2025-03-09 06:35:53,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 06:35:53,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:53,186 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:35:53,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:35:53,186 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-09 06:35:53,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:53,187 INFO L85 PathProgramCache]: Analyzing trace with hash -611470423, now seen corresponding path program 1 times [2025-03-09 06:35:53,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:53,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354884797] [2025-03-09 06:35:53,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:53,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:53,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:35:53,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:35:53,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:53,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:53,288 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 06:35:53,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:53,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354884797] [2025-03-09 06:35:53,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354884797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:53,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:53,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:35:53,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428589181] [2025-03-09 06:35:53,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:53,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:53,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:53,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:53,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:53,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 91 [2025-03-09 06:35:53,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 06:35:53,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:53,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 91 [2025-03-09 06:35:53,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:54,229 INFO L124 PetriNetUnfolderBase]: 6126/12739 cut-off events. [2025-03-09 06:35:54,229 INFO L125 PetriNetUnfolderBase]: For 515/887 co-relation queries the response was YES. [2025-03-09 06:35:54,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23122 conditions, 12739 events. 6126/12739 cut-off events. For 515/887 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 109483 event pairs, 1719 based on Foata normal form. 231/11908 useless extension candidates. Maximal degree in co-relation 23016. Up to 6013 conditions per place. [2025-03-09 06:35:54,298 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 123 selfloop transitions, 12 changer transitions 0/170 dead transitions. [2025-03-09 06:35:54,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 170 transitions, 686 flow [2025-03-09 06:35:54,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:35:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:35:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 306 transitions. [2025-03-09 06:35:54,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6725274725274726 [2025-03-09 06:35:54,300 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 194 flow. Second operand 5 states and 306 transitions. [2025-03-09 06:35:54,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 170 transitions, 686 flow [2025-03-09 06:35:54,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 170 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:35:54,304 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 286 flow [2025-03-09 06:35:54,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2025-03-09 06:35:54,304 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 12 predicate places. [2025-03-09 06:35:54,304 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 286 flow [2025-03-09 06:35:54,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 06:35:54,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:54,305 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:35:54,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:35:54,305 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-09 06:35:54,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1336410952, now seen corresponding path program 1 times [2025-03-09 06:35:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:54,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995980746] [2025-03-09 06:35:54,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:54,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:54,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:35:54,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:35:54,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:54,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:54,407 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 06:35:54,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:54,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995980746] [2025-03-09 06:35:54,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995980746] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:54,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:54,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:35:54,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303577239] [2025-03-09 06:35:54,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:54,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:35:54,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:54,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:35:54,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:35:54,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2025-03-09 06:35:54,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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 06:35:54,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:54,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2025-03-09 06:35:54,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:55,609 INFO L124 PetriNetUnfolderBase]: 6342/12891 cut-off events. [2025-03-09 06:35:55,610 INFO L125 PetriNetUnfolderBase]: For 4202/4202 co-relation queries the response was YES. [2025-03-09 06:35:55,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26983 conditions, 12891 events. 6342/12891 cut-off events. For 4202/4202 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 109180 event pairs, 1290 based on Foata normal form. 177/12124 useless extension candidates. Maximal degree in co-relation 20648. Up to 7737 conditions per place. [2025-03-09 06:35:55,658 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 133 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2025-03-09 06:35:55,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 172 transitions, 810 flow [2025-03-09 06:35:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:35:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:35:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 317 transitions. [2025-03-09 06:35:55,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5805860805860806 [2025-03-09 06:35:55,660 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 286 flow. Second operand 6 states and 317 transitions. [2025-03-09 06:35:55,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 172 transitions, 810 flow [2025-03-09 06:35:55,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 172 transitions, 810 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:35:55,667 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 294 flow [2025-03-09 06:35:55,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2025-03-09 06:35:55,668 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 16 predicate places. [2025-03-09 06:35:55,668 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 294 flow [2025-03-09 06:35:55,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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 06:35:55,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:55,668 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-03-09 06:35:55,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:35:55,669 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-09 06:35:55,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:55,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1520932974, now seen corresponding path program 1 times [2025-03-09 06:35:55,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:55,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387885133] [2025-03-09 06:35:55,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:55,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:55,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:35:55,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:35:55,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:55,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:55,723 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 06:35:55,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:55,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387885133] [2025-03-09 06:35:55,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387885133] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:55,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:55,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:35:55,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075752432] [2025-03-09 06:35:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:55,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:55,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:55,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:55,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:55,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2025-03-09 06:35:55,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 06:35:55,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:55,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2025-03-09 06:35:55,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:35:56,461 INFO L124 PetriNetUnfolderBase]: 6031/12018 cut-off events. [2025-03-09 06:35:56,461 INFO L125 PetriNetUnfolderBase]: For 4932/4932 co-relation queries the response was YES. [2025-03-09 06:35:56,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25908 conditions, 12018 events. 6031/12018 cut-off events. For 4932/4932 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 98568 event pairs, 1620 based on Foata normal form. 185/11533 useless extension candidates. Maximal degree in co-relation 19629. Up to 8290 conditions per place. [2025-03-09 06:35:56,515 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 108 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2025-03-09 06:35:56,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 147 transitions, 700 flow [2025-03-09 06:35:56,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:35:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:35:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2025-03-09 06:35:56,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2025-03-09 06:35:56,516 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 294 flow. Second operand 4 states and 224 transitions. [2025-03-09 06:35:56,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 147 transitions, 700 flow [2025-03-09 06:35:56,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 147 transitions, 684 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-09 06:35:56,527 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 294 flow [2025-03-09 06:35:56,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2025-03-09 06:35:56,527 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 14 predicate places. [2025-03-09 06:35:56,528 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 294 flow [2025-03-09 06:35:56,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 06:35:56,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:56,528 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-03-09 06:35:56,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:35:56,528 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-03-09 06:35:56,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1327691203, now seen corresponding path program 1 times [2025-03-09 06:35:56,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:56,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481047083] [2025-03-09 06:35:56,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:56,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:56,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:35:56,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:35:56,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:56,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:35:56,554 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:35:56,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:35:56,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:35:56,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:56,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:35:56,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:35:56,576 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-03-09 06:35:56,576 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-03-09 06:35:56,577 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-03-09 06:35:56,577 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-03-09 06:35:56,577 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-03-09 06:35:56,577 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-03-09 06:35:56,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:35:56,577 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-09 06:35:56,577 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:35:56,577 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-09 06:35:56,611 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 06:35:56,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 123 transitions, 273 flow [2025-03-09 06:35:56,634 INFO L124 PetriNetUnfolderBase]: 34/225 cut-off events. [2025-03-09 06:35:56,634 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-03-09 06:35:56,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 225 events. 34/225 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 911 event pairs, 1 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 155. Up to 12 conditions per place. [2025-03-09 06:35:56,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 123 transitions, 273 flow [2025-03-09 06:35:56,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 123 transitions, 273 flow [2025-03-09 06:35:56,639 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:35:56,639 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;@727700b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:35:56,640 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-09 06:35:56,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:35:56,642 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-09 06:35:56,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:35:56,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:35:56,644 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:35:56,645 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-09 06:35:56,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:35:56,645 INFO L85 PathProgramCache]: Analyzing trace with hash 623354475, now seen corresponding path program 1 times [2025-03-09 06:35:56,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:35:56,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401216750] [2025-03-09 06:35:56,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:35:56,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:35:56,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:35:56,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:35:56,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:35:56,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:35:56,703 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 06:35:56,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:35:56,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401216750] [2025-03-09 06:35:56,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401216750] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:35:56,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:35:56,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:35:56,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063319334] [2025-03-09 06:35:56,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:35:56,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:35:56,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:35:56,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:35:56,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:35:56,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 123 [2025-03-09 06:35:56,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 123 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 06:35:56,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:35:56,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 123 [2025-03-09 06:35:56,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:36:06,015 INFO L124 PetriNetUnfolderBase]: 97039/172514 cut-off events. [2025-03-09 06:36:06,015 INFO L125 PetriNetUnfolderBase]: For 2042/2042 co-relation queries the response was YES. [2025-03-09 06:36:06,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308166 conditions, 172514 events. 97039/172514 cut-off events. For 2042/2042 co-relation queries the response was YES. Maximal size of possible extension queue 3655. Compared 1786209 event pairs, 63133 based on Foata normal form. 26434/183879 useless extension candidates. Maximal degree in co-relation 18108. Up to 134303 conditions per place. [2025-03-09 06:36:06,808 INFO L140 encePairwiseOnDemand]: 97/123 looper letters, 82 selfloop transitions, 3 changer transitions 0/130 dead transitions. [2025-03-09 06:36:06,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 130 transitions, 457 flow [2025-03-09 06:36:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:36:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:36:06,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2025-03-09 06:36:06,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2025-03-09 06:36:06,810 INFO L175 Difference]: Start difference. First operand has 107 places, 123 transitions, 273 flow. Second operand 4 states and 300 transitions. [2025-03-09 06:36:06,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 130 transitions, 457 flow [2025-03-09 06:36:06,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 130 transitions, 457 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:36:06,813 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 257 flow [2025-03-09 06:36:06,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2025-03-09 06:36:06,814 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, 5 predicate places. [2025-03-09 06:36:06,814 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 257 flow [2025-03-09 06:36:06,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 06:36:06,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:36:06,814 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:36:06,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:36:06,814 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-09 06:36:06,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:36:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash -504848702, now seen corresponding path program 1 times [2025-03-09 06:36:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:36:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133633709] [2025-03-09 06:36:06,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:36:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:36:06,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:36:06,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:36:06,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:36:06,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:36:06,893 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 06:36:06,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:36:06,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133633709] [2025-03-09 06:36:06,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133633709] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:36:06,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:36:06,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:36:06,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508443543] [2025-03-09 06:36:06,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:36:06,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:36:06,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:36:06,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:36:06,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:36:06,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 123 [2025-03-09 06:36:06,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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 06:36:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:36:06,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 123 [2025-03-09 06:36:06,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:36:20,516 INFO L124 PetriNetUnfolderBase]: 137611/236006 cut-off events. [2025-03-09 06:36:20,517 INFO L125 PetriNetUnfolderBase]: For 8589/14106 co-relation queries the response was YES. [2025-03-09 06:36:21,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435508 conditions, 236006 events. 137611/236006 cut-off events. For 8589/14106 co-relation queries the response was YES. Maximal size of possible extension queue 5152. Compared 2448205 event pairs, 46351 based on Foata normal form. 3269/221467 useless extension candidates. Maximal degree in co-relation 435401. Up to 123526 conditions per place. [2025-03-09 06:36:21,827 INFO L140 encePairwiseOnDemand]: 112/123 looper letters, 180 selfloop transitions, 16 changer transitions 0/243 dead transitions. [2025-03-09 06:36:21,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 243 transitions, 995 flow [2025-03-09 06:36:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:36:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:36:21,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 427 transitions. [2025-03-09 06:36:21,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6943089430894309 [2025-03-09 06:36:21,829 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 257 flow. Second operand 5 states and 427 transitions. [2025-03-09 06:36:21,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 243 transitions, 995 flow [2025-03-09 06:36:21,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 243 transitions, 991 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:36:21,849 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 383 flow [2025-03-09 06:36:21,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2025-03-09 06:36:21,850 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, 12 predicate places. [2025-03-09 06:36:21,850 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 383 flow [2025-03-09 06:36:21,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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 06:36:21,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:36:21,850 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:36:21,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:36:21,850 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-09 06:36:21,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:36:21,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1156092648, now seen corresponding path program 1 times [2025-03-09 06:36:21,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:36:21,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886890761] [2025-03-09 06:36:21,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:36:21,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:36:21,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:36:21,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:36:21,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:36:21,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:36:21,929 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 06:36:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:36:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886890761] [2025-03-09 06:36:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886890761] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:36:21,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:36:21,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:36:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102228807] [2025-03-09 06:36:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:36:21,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:36:21,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:36:21,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:36:21,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:36:21,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 123 [2025-03-09 06:36:21,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 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 06:36:21,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:36:21,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 123 [2025-03-09 06:36:21,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand