./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-complex/bounded_buffer.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 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:33:18,859 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:33:18,909 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:33:18,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:33:18,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:33:18,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:33:18,942 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:33:18,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:33:18,942 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:33:18,943 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:33:18,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:33:18,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:33:18,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:33:18,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:33:18,945 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:33:18,945 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:33:18,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:33:18,945 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:33:18,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:33:18,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:33:18,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:33:18,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:33:18,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:33:18,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:33:18,946 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:33:18,946 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:33:18,946 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:33:18,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:33:18,946 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:33:18,946 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:33:18,947 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:33:18,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:33:18,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:33:18,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:33:18,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:33:18,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:33:18,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:33:18,947 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:33:18,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:33:18,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:33:18,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:33:18,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:33:18,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:33:18,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:33:18,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:33:18,948 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 -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2025-03-17 19:33:19,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:33:19,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:33:19,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:33:19,157 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:33:19,157 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:33:19,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-03-17 19:33:20,385 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f36c6c8f/bfde0a4bede742b290e2b12725c31b1b/FLAG3cff7cfe4 [2025-03-17 19:33:20,725 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:33:20,725 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-03-17 19:33:20,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f36c6c8f/bfde0a4bede742b290e2b12725c31b1b/FLAG3cff7cfe4 [2025-03-17 19:33:20,955 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f36c6c8f/bfde0a4bede742b290e2b12725c31b1b [2025-03-17 19:33:20,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:33:20,958 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:33:20,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:33:20,960 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:33:20,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:33:20,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:33:20" (1/1) ... [2025-03-17 19:33:20,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6959ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:20, skipping insertion in model container [2025-03-17 19:33:20,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:33:20" (1/1) ... [2025-03-17 19:33:21,002 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:33:21,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:33:21,468 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:33:21,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:33:21,598 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:33:21,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21 WrapperNode [2025-03-17 19:33:21,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:33:21,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:33:21,600 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:33:21,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:33:21,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,649 INFO L138 Inliner]: procedures = 429, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 470 [2025-03-17 19:33:21,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:33:21,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:33:21,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:33:21,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:33:21,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,662 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,694 INFO L175 MemorySlicer]: Split 78 memory accesses to 6 slices as follows [58, 2, 6, 5, 5, 2]. 74 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0, 0, 0]. The 26 writes are split as follows [17, 0, 2, 3, 3, 1]. [2025-03-17 19:33:21,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,712 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:33:21,724 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:33:21,724 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:33:21,724 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:33:21,724 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (1/1) ... [2025-03-17 19:33:21,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:33:21,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:33:21,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:33:21,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:33:21,772 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2025-03-17 19:33:21,772 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2025-03-17 19:33:21,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 19:33:21,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:33:21,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:33:21,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:33:21,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:33:21,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2025-03-17 19:33:21,773 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2025-03-17 19:33:21,773 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:33:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:33:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:33:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:33:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:33:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 19:33:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 19:33:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:33:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:33:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:33:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:33:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 19:33:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 19:33:21,777 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:33:21,941 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:33:21,942 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:33:22,282 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1646: havoc ~#temp~1#1.base, ~#temp~1#1.offset; [2025-03-17 19:33:22,282 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1646-1: SUMMARY for call ULTIMATE.dealloc(~#temp~1#1.base, ~#temp~1#1.offset); srcloc: null [2025-03-17 19:33:22,522 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1663: havoc main_~#producers~0#1.base, main_~#producers~0#1.offset; [2025-03-17 19:33:22,522 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1663-1: SUMMARY for call ULTIMATE.dealloc(main_~#producers~0#1.base, main_~#producers~0#1.offset); srcloc: null [2025-03-17 19:33:22,522 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664: havoc main_~#consumers~0#1.base, main_~#consumers~0#1.offset; [2025-03-17 19:33:22,522 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664-1: SUMMARY for call ULTIMATE.dealloc(main_~#consumers~0#1.base, main_~#consumers~0#1.offset); srcloc: null [2025-03-17 19:33:22,522 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1666: havoc main_~#buffer~0#1.base, main_~#buffer~0#1.offset; [2025-03-17 19:33:22,522 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1666-1: SUMMARY for call ULTIMATE.dealloc(main_~#buffer~0#1.base, main_~#buffer~0#1.offset); srcloc: null [2025-03-17 19:33:22,523 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:33:22,524 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:33:23,159 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:33:23,159 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:33:23,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:33:23 BoogieIcfgContainer [2025-03-17 19:33:23,159 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:33:23,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:33:23,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:33:23,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:33:23,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:33:20" (1/3) ... [2025-03-17 19:33:23,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d56a119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:33:23, skipping insertion in model container [2025-03-17 19:33:23,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:33:21" (2/3) ... [2025-03-17 19:33:23,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d56a119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:33:23, skipping insertion in model container [2025-03-17 19:33:23,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:33:23" (3/3) ... [2025-03-17 19:33:23,165 INFO L128 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2025-03-17 19:33:23,177 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:33:23,179 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bounded_buffer.i that has 3 procedures, 112 locations, 1 initial locations, 13 loop locations, and 20 error locations. [2025-03-17 19:33:23,179 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:33:23,284 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-17 19:33:23,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 143 transitions, 306 flow [2025-03-17 19:33:23,402 INFO L124 PetriNetUnfolderBase]: 72/346 cut-off events. [2025-03-17 19:33:23,404 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-17 19:33:23,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 346 events. 72/346 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1738 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 187. Up to 16 conditions per place. [2025-03-17 19:33:23,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 143 transitions, 306 flow [2025-03-17 19:33:23,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 143 transitions, 306 flow [2025-03-17 19:33:23,430 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:33:23,438 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;@6bb8b84f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:33:23,439 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2025-03-17 19:33:23,447 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:33:23,447 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-17 19:33:23,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:33:23,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:33:23,448 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:33:23,448 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [consumer_routineErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE, consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-03-17 19:33:23,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:33:23,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1058370682, now seen corresponding path program 1 times [2025-03-17 19:33:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:33:23,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524040127] [2025-03-17 19:33:23,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:33:23,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:33:23,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:33:23,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:33:23,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:33:23,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:33:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:33:23,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:33:23,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524040127] [2025-03-17 19:33:23,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524040127] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:33:23,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:33:23,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:33:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858269654] [2025-03-17 19:33:23,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:33:23,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:33:23,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:33:23,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:33:23,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:33:23,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 143 [2025-03-17 19:33:23,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 143 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:33:23,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:33:23,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 143 [2025-03-17 19:33:23,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:33:25,649 INFO L124 PetriNetUnfolderBase]: 6195/10058 cut-off events. [2025-03-17 19:33:25,649 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2025-03-17 19:33:25,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19226 conditions, 10058 events. 6195/10058 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 61769 event pairs, 3229 based on Foata normal form. 297/8264 useless extension candidates. Maximal degree in co-relation 18546. Up to 5807 conditions per place. [2025-03-17 19:33:25,699 INFO L140 encePairwiseOnDemand]: 122/143 looper letters, 149 selfloop transitions, 9 changer transitions 9/200 dead transitions. [2025-03-17 19:33:25,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 200 transitions, 760 flow [2025-03-17 19:33:25,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:33:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:33:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2025-03-17 19:33:25,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6066433566433567 [2025-03-17 19:33:25,712 INFO L175 Difference]: Start difference. First operand has 118 places, 143 transitions, 306 flow. Second operand 4 states and 347 transitions. [2025-03-17 19:33:25,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 200 transitions, 760 flow [2025-03-17 19:33:25,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 200 transitions, 760 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:33:25,726 INFO L231 Difference]: Finished difference. Result has 112 places, 117 transitions, 282 flow [2025-03-17 19:33:25,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=112, PETRI_TRANSITIONS=117} [2025-03-17 19:33:25,730 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -6 predicate places. [2025-03-17 19:33:25,730 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 117 transitions, 282 flow [2025-03-17 19:33:25,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:33:25,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:33:25,730 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:33:25,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:33:25,731 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting producer_routineErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [consumer_routineErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE, consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-03-17 19:33:25,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:33:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash 631508452, now seen corresponding path program 1 times [2025-03-17 19:33:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:33:25,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816636436] [2025-03-17 19:33:25,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:33:25,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:33:25,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:33:25,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:33:25,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:33:25,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:33:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:33:26,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:33:26,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816636436] [2025-03-17 19:33:26,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816636436] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:33:26,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:33:26,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 19:33:26,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800970376] [2025-03-17 19:33:26,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:33:26,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:33:26,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:33:26,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:33:26,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:33:26,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 143 [2025-03-17 19:33:26,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 117 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 42.0) internal successors, (294), 7 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:33:26,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:33:26,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 143 [2025-03-17 19:33:26,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:33:29,273 INFO L124 PetriNetUnfolderBase]: 7515/11701 cut-off events. [2025-03-17 19:33:29,274 INFO L125 PetriNetUnfolderBase]: For 2588/2588 co-relation queries the response was YES. [2025-03-17 19:33:29,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24630 conditions, 11701 events. 7515/11701 cut-off events. For 2588/2588 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 71378 event pairs, 1369 based on Foata normal form. 0/9923 useless extension candidates. Maximal degree in co-relation 23771. Up to 7782 conditions per place. [2025-03-17 19:33:29,328 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 204 selfloop transitions, 30 changer transitions 0/267 dead transitions. [2025-03-17 19:33:29,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 267 transitions, 1137 flow [2025-03-17 19:33:29,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:33:29,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:33:29,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 730 transitions. [2025-03-17 19:33:29,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4254079254079254 [2025-03-17 19:33:29,332 INFO L175 Difference]: Start difference. First operand has 112 places, 117 transitions, 282 flow. Second operand 12 states and 730 transitions. [2025-03-17 19:33:29,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 267 transitions, 1137 flow [2025-03-17 19:33:29,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 267 transitions, 1129 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:33:29,341 INFO L231 Difference]: Finished difference. Result has 127 places, 146 transitions, 473 flow [2025-03-17 19:33:29,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=473, PETRI_PLACES=127, PETRI_TRANSITIONS=146} [2025-03-17 19:33:29,342 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 9 predicate places. [2025-03-17 19:33:29,342 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 146 transitions, 473 flow [2025-03-17 19:33:29,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 42.0) internal successors, (294), 7 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:33:29,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:33:29,342 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:33:29,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:33:29,342 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE, consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-03-17 19:33:29,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:33:29,343 INFO L85 PathProgramCache]: Analyzing trace with hash 567048687, now seen corresponding path program 1 times [2025-03-17 19:33:29,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:33:29,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133181051] [2025-03-17 19:33:29,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:33:29,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:33:29,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:33:29,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:33:29,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:33:29,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:33:29,398 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:33:29,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:33:29,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:33:29,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:33:29,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:33:29,446 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:33:29,447 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:33:29,451 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 28 remaining) [2025-03-17 19:33:29,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE (26 of 28 remaining) [2025-03-17 19:33:29,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2025-03-17 19:33:29,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2025-03-17 19:33:29,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2025-03-17 19:33:29,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2025-03-17 19:33:29,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2025-03-17 19:33:29,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE (8 of 28 remaining) [2025-03-17 19:33:29,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2025-03-17 19:33:29,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2025-03-17 19:33:29,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE (5 of 28 remaining) [2025-03-17 19:33:29,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2025-03-17 19:33:29,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2025-03-17 19:33:29,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE (2 of 28 remaining) [2025-03-17 19:33:29,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2025-03-17 19:33:29,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2025-03-17 19:33:29,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:33:29,455 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-17 19:33:29,457 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:33:29,457 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:33:29,528 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-03-17 19:33:29,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 216 transitions, 476 flow [2025-03-17 19:33:29,620 INFO L124 PetriNetUnfolderBase]: 281/1253 cut-off events. [2025-03-17 19:33:29,621 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2025-03-17 19:33:29,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 1253 events. 281/1253 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 8424 event pairs, 1 based on Foata normal form. 0/789 useless extension candidates. Maximal degree in co-relation 701. Up to 64 conditions per place. [2025-03-17 19:33:29,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 216 transitions, 476 flow [2025-03-17 19:33:29,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 216 transitions, 476 flow [2025-03-17 19:33:29,643 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:33:29,643 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;@6bb8b84f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:33:29,644 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2025-03-17 19:33:29,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:33:29,648 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2025-03-17 19:33:29,648 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:33:29,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:33:29,648 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:33:29,648 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [consumer_routineErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE, consumer_routineErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, consumer_routineErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2025-03-17 19:33:29,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:33:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1262656339, now seen corresponding path program 1 times [2025-03-17 19:33:29,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:33:29,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145279906] [2025-03-17 19:33:29,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:33:29,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:33:29,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:33:29,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:33:29,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:33:29,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:33:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:33:29,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:33:29,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145279906] [2025-03-17 19:33:29,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145279906] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:33:29,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:33:29,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:33:29,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588867898] [2025-03-17 19:33:29,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:33:29,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:33:29,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:33:29,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:33:29,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:33:29,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 216 [2025-03-17 19:33:29,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 216 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:33:29,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:33:29,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 216 [2025-03-17 19:33:29,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand