./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stack_longest-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 00:55:03,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 00:55:03,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 00:55:03,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 00:55:03,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 00:55:03,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 00:55:03,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 00:55:03,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 00:55:03,597 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 00:55:03,597 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 00:55:03,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 00:55:03,597 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 00:55:03,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 00:55:03,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 00:55:03,598 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 00:55:03,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 00:55:03,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 00:55:03,598 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 00:55:03,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 00:55:03,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 00:55:03,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 00:55:03,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 00:55:03,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 00:55:03,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 00:55:03,599 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 00:55:03,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 00:55:03,599 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 00:55:03,600 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 00:55:03,600 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 00:55:03,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 00:55:03,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 00:55:03,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 00:55:03,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 00:55:03,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 00:55:03,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 00:55:03,601 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 00:55:03,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 00:55:03,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 00:55:03,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 00:55:03,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 00:55:03,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 00:55:03,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 00:55:03,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 00:55:03,601 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-jdk21/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 ! call(reach_error())) ) 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 -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2025-02-08 00:55:03,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 00:55:03,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 00:55:03,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 00:55:03,903 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 00:55:03,903 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 00:55:03,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longest-2.i [2025-02-08 00:55:05,316 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d11fe4b81/1e8458da6ccf42a4b136ec82d66d3550/FLAG90995da64 [2025-02-08 00:55:05,657 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 00:55:05,658 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-2.i [2025-02-08 00:55:05,675 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d11fe4b81/1e8458da6ccf42a4b136ec82d66d3550/FLAG90995da64 [2025-02-08 00:55:05,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d11fe4b81/1e8458da6ccf42a4b136ec82d66d3550 [2025-02-08 00:55:05,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 00:55:05,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 00:55:05,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 00:55:05,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 00:55:05,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 00:55:05,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:55:05" (1/1) ... [2025-02-08 00:55:05,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5126683a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:05, skipping insertion in model container [2025-02-08 00:55:05,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:55:05" (1/1) ... [2025-02-08 00:55:05,747 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 00:55:06,069 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2025-02-08 00:55:06,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 00:55:06,147 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 00:55:06,207 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2025-02-08 00:55:06,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 00:55:06,328 INFO L204 MainTranslator]: Completed translation [2025-02-08 00:55:06,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06 WrapperNode [2025-02-08 00:55:06,329 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 00:55:06,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 00:55:06,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 00:55:06,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 00:55:06,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,427 INFO L138 Inliner]: procedures = 277, calls = 830, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 939 [2025-02-08 00:55:06,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 00:55:06,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 00:55:06,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 00:55:06,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 00:55:06,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,490 INFO L175 MemorySlicer]: Split 809 memory accesses to 3 slices as follows [2, 5, 802]. 99 percent of accesses are in the largest equivalence class. The 807 initializations are split as follows [2, 5, 800]. The 1 writes are split as follows [0, 0, 1]. [2025-02-08 00:55:06,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,514 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 00:55:06,537 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 00:55:06,537 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 00:55:06,538 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 00:55:06,538 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (1/1) ... [2025-02-08 00:55:06,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 00:55:06,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:55:06,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 00:55:06,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 00:55:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-08 00:55:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-08 00:55:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-08 00:55:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-08 00:55:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 00:55:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 00:55:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 00:55:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 00:55:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 00:55:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 00:55:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 00:55:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 00:55:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 00:55:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 00:55:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 00:55:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 00:55:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 00:55:06,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 00:55:06,599 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 00:55:06,725 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 00:55:06,727 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 00:55:07,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L969: havoc inc_top_#t~post31#1;assume { :end_inline_inc_top } true; [2025-02-08 00:55:07,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L969-1: assume { :begin_inline_inc_top } true;havoc inc_top_#t~post31#1; [2025-02-08 00:55:07,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L998: havoc #t~ret41#1; [2025-02-08 00:55:07,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L998-1: [2025-02-08 00:55:07,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L998-2: SUMMARY for call #t~ret41#1 := #PthreadsMutexUnlock(~#m~0.base, ~#m~0.offset); srcloc: null [2025-02-08 00:55:07,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L998-3: [2025-02-08 00:55:07,884 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L945: havoc inc_top_#t~post31#1; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L945-1: ~top~0 := 1 + inc_top_#t~post31#1; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L945-2: inc_top_#t~post31#1 := ~top~0; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L941-1: assume false; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L941-1: assume !false; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L941-2: assume false; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-1: havoc #t~post42#1; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-2: ~i~0#1 := 1 + #t~post42#1; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-3: #t~post42#1 := ~i~0#1; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L971-1: push_#res#1 := 0; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L996: assume -1 == #t~ret40#1; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L996: assume !(-1 == #t~ret40#1); [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L996-1: havoc #t~ret40#1;assume { :begin_inline_error } true; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L996-2: havoc #t~ret40#1; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L996-3: assume { :end_inline_push } true;assume -2147483648 <= #t~ret40#1 && #t~ret40#1 <= 2147483647; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L996-4: havoc push_#in~stack#1.base, push_#in~stack#1.offset, push_#in~x#1; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L996-5: havoc push_#t~ret33#1, push_#t~ret34#1, push_~stack#1.base, push_~stack#1.offset, push_~x#1; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L996-6: #t~ret40#1 := push_#res#1; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L968: havoc push_#t~ret34#1; [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L968-1: SUMMARY for call write~int#2(push_~x#1, push_~stack#1.base, push_~stack#1.offset + 4 * push_#t~ret34#1, 4); srcloc: null [2025-02-08 00:55:07,885 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L968-2: assume { :end_inline_get_top } true;assume -2147483648 <= push_#t~ret34#1 && push_#t~ret34#1 <= 2147483647; [2025-02-08 00:55:07,886 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L997: assume { :end_inline_error } true; [2025-02-08 00:55:07,886 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L968-3: push_#t~ret34#1 := get_top_#res#1; [2025-02-08 00:55:07,924 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L985-1: pop_#res#1 := 0; [2025-02-08 00:55:07,924 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1010: assume -2 == #t~ret44#1; [2025-02-08 00:55:07,924 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1010: assume !(-2 == #t~ret44#1); [2025-02-08 00:55:07,924 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1010-1: havoc #t~ret44#1;assume { :begin_inline_error } true; [2025-02-08 00:55:07,924 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1010-2: havoc #t~ret44#1; [2025-02-08 00:55:07,924 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1010-3: assume { :end_inline_pop } true;assume -2147483648 <= #t~ret44#1 && #t~ret44#1 <= 2147483647; [2025-02-08 00:55:07,925 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1010-4: havoc pop_#in~stack#1.base, pop_#in~stack#1.offset; [2025-02-08 00:55:07,925 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1010-5: havoc pop_#t~ret35#1, pop_#t~ret36#1, pop_#t~mem37#1, pop_~stack#1.base, pop_~stack#1.offset; [2025-02-08 00:55:07,925 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1010-6: #t~ret44#1 := pop_#res#1; [2025-02-08 00:55:07,925 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1011: assume { :end_inline_error } true; [2025-02-08 00:55:07,925 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L941-1: assume false; [2025-02-08 00:55:07,925 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L941-1: assume !false; [2025-02-08 00:55:07,925 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L941-2: assume false; [2025-02-08 00:55:07,925 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983: havoc pop_#t~mem37#1; [2025-02-08 00:55:07,925 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-1: havoc pop_#t~ret36#1; [2025-02-08 00:55:07,925 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-3: havoc pop_#t~mem37#1; [2025-02-08 00:55:07,926 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-4: havoc pop_#t~ret36#1; [2025-02-08 00:55:07,926 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-5: pop_#res#1 := (if pop_#t~mem37#1 % 4294967296 % 4294967296 <= 2147483647 then pop_#t~mem37#1 % 4294967296 % 4294967296 else pop_#t~mem37#1 % 4294967296 % 4294967296 - 4294967296); [2025-02-08 00:55:07,926 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-6: SUMMARY for call pop_#t~mem37#1 := read~int#2(pop_~stack#1.base, pop_~stack#1.offset + 4 * pop_#t~ret36#1, 4); srcloc: null [2025-02-08 00:55:07,926 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-7: assume { :end_inline_get_top } true;assume -2147483648 <= pop_#t~ret36#1 && pop_#t~ret36#1 <= 2147483647; [2025-02-08 00:55:07,926 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L983-8: pop_#t~ret36#1 := get_top_#res#1; [2025-02-08 00:55:07,927 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 00:55:07,927 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 00:55:20,961 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 00:55:20,962 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 00:55:20,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:55:20 BoogieIcfgContainer [2025-02-08 00:55:20,963 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 00:55:20,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 00:55:20,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 00:55:20,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 00:55:20,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 12:55:05" (1/3) ... [2025-02-08 00:55:20,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7c6e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:55:20, skipping insertion in model container [2025-02-08 00:55:20,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:06" (2/3) ... [2025-02-08 00:55:20,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7c6e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:55:20, skipping insertion in model container [2025-02-08 00:55:20,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:55:20" (3/3) ... [2025-02-08 00:55:20,972 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2025-02-08 00:55:20,987 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 00:55:20,989 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longest-2.i that has 3 procedures, 28 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-08 00:55:20,989 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 00:55:21,051 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 00:55:21,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 28 transitions, 70 flow [2025-02-08 00:55:21,133 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2025-02-08 00:55:21,138 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 00:55:21,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 1/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-02-08 00:55:21,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 28 transitions, 70 flow [2025-02-08 00:55:21,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2025-02-08 00:55:21,158 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 00:55:21,170 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;@f3e1fa7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 00:55:21,174 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 00:55:21,175 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2025-02-08 00:55:21,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 00:55:21,178 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2025-02-08 00:55:21,179 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2025-02-08 00:55:21,180 INFO L422 BasicCegarLoop]: Path program histogram: [] [2025-02-08 00:55:21,187 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 00:55:21,187 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 00:55:21,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 12:55:21 BasicIcfg [2025-02-08 00:55:21,195 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 00:55:21,196 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 00:55:21,196 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 00:55:21,196 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 00:55:21,197 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:55:20" (3/4) ... [2025-02-08 00:55:21,199 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 00:55:21,202 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2025-02-08 00:55:21,202 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2025-02-08 00:55:21,227 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 429 nodes and edges [2025-02-08 00:55:21,229 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 214 nodes and edges [2025-02-08 00:55:21,231 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 107 nodes and edges [2025-02-08 00:55:21,232 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 52 nodes and edges [2025-02-08 00:55:21,233 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2025-02-08 00:55:21,234 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-02-08 00:55:21,235 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-02-08 00:55:21,236 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-08 00:55:21,237 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 00:55:21,380 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 00:55:21,381 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 00:55:21,381 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 00:55:21,382 INFO L158 Benchmark]: Toolchain (without parser) took 15684.44ms. Allocated memory was 142.6MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 114.1MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 425.3MB. Max. memory is 16.1GB. [2025-02-08 00:55:21,383 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 00:55:21,383 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.98ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 76.5MB in the end (delta: 37.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-08 00:55:21,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.77ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 67.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 00:55:21,384 INFO L158 Benchmark]: Boogie Preprocessor took 109.04ms. Allocated memory is still 142.6MB. Free memory was 67.8MB in the beginning and 60.8MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 00:55:21,386 INFO L158 Benchmark]: IcfgBuilder took 14425.22ms. Allocated memory was 142.6MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 60.8MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2025-02-08 00:55:21,386 INFO L158 Benchmark]: TraceAbstraction took 230.44ms. Allocated memory is still 5.2GB. Free memory was 4.8GB in the beginning and 4.7GB in the end (delta: 29.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 00:55:21,387 INFO L158 Benchmark]: Witness Printer took 184.69ms. Allocated memory is still 5.2GB. Free memory was 4.7GB in the beginning and 4.7GB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 00:55:21,389 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 629.98ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 76.5MB in the end (delta: 37.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.77ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 67.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 109.04ms. Allocated memory is still 142.6MB. Free memory was 67.8MB in the beginning and 60.8MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 14425.22ms. Allocated memory was 142.6MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 60.8MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * TraceAbstraction took 230.44ms. Allocated memory is still 5.2GB. Free memory was 4.8GB in the beginning and 4.7GB in the end (delta: 29.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 184.69ms. Allocated memory is still 5.2GB. Free memory was 4.7GB in the beginning and 4.7GB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.1s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 00:55:21,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE