./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f92b704990a995ec2f32d8abc59f9e1c173271b08c590da02eb7a88d6ef9eed6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:12:25,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:12:25,823 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:12:25,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:12:25,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:12:25,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:12:25,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:12:25,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:12:25,850 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:12:25,850 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:12:25,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:12:25,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:12:25,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:12:25,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:12:25,850 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:12:25,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:12:25,851 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:12:25,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:12:25,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:12:25,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:12:25,851 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:12:25,851 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:12:25,851 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:12:25,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:12:25,851 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:12:25,851 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:12:25,852 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:12:25,852 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:12:25,852 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:12:25,852 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:12:25,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:12:25,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:12:25,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:12:25,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:12:25,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:12:25,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:12:25,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:12:25,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:12:25,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:12:25,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:12:25,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:12:25,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:12:25,854 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> f92b704990a995ec2f32d8abc59f9e1c173271b08c590da02eb7a88d6ef9eed6 [2025-02-08 08:12:26,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:12:26,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:12:26,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:12:26,146 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:12:26,146 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:12:26,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i [2025-02-08 08:12:27,468 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8fe02747a/1757a1821af445e08332b19f9a230b97/FLAG1ecbdf83a [2025-02-08 08:12:27,812 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:12:27,813 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-2.i [2025-02-08 08:12:27,826 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8fe02747a/1757a1821af445e08332b19f9a230b97/FLAG1ecbdf83a [2025-02-08 08:12:27,842 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8fe02747a/1757a1821af445e08332b19f9a230b97 [2025-02-08 08:12:27,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:12:27,846 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:12:27,847 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:12:27,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:12:27,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:12:27,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:12:27" (1/1) ... [2025-02-08 08:12:27,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217b979c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:27, skipping insertion in model container [2025-02-08 08:12:27,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:12:27" (1/1) ... [2025-02-08 08:12:27,897 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:12:28,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:12:28,279 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:12:28,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:12:28,390 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:12:28,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28 WrapperNode [2025-02-08 08:12:28,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:12:28,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:12:28,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:12:28,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:12:28,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,471 INFO L138 Inliner]: procedures = 171, calls = 36, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 771 [2025-02-08 08:12:28,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:12:28,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:12:28,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:12:28,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:12:28,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,514 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2025-02-08 08:12:28,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,530 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,535 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:12:28,546 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:12:28,546 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:12:28,546 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:12:28,547 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (1/1) ... [2025-02-08 08:12:28,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:12:28,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:28,584 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 08:12:28,589 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 08:12:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-08 08:12:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-08 08:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 08:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 08:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 08:12:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:12:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 08:12:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:12:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:12:28,617 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 08:12:28,733 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:12:28,735 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:12:28,963 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L721: havoc push_#t~ret5#1; [2025-02-08 08:12:28,963 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L721-1: [2025-02-08 08:12:28,963 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L721-2: SUMMARY for call push_#t~ret5#1 := #PthreadsMutexLock(~#m~0.base, ~#m~0.offset); srcloc: null [2025-02-08 08:12:28,964 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L721-3: [2025-02-08 08:12:28,964 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L722: push_~oldTop~0#1 := ~top~0; [2025-02-08 08:12:28,964 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L723: assume 0 <= (1 + push_~newTop~0#1) % 4294967296 && (1 + push_~newTop~0#1) % 4294967296 < 641; [2025-02-08 08:12:28,964 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L723: assume !(0 <= (1 + push_~newTop~0#1) % 4294967296 && (1 + push_~newTop~0#1) % 4294967296 < 641); [2025-02-08 08:12:28,964 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L723-1: ~memory~0 := ~memory~0[1 + push_~newTop~0#1 := push_~oldTop~0#1]; [2025-02-08 08:12:28,964 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L13: assume false; [2025-02-08 08:12:28,964 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L13: assume !false; [2025-02-08 08:12:28,964 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L13-1: assume false; [2025-02-08 08:12:28,965 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L13-1: assume !false; [2025-02-08 08:12:28,965 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L724: ~top~0 := push_~newTop~0#1; [2025-02-08 08:12:28,965 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc push_#t~ret4#1; [2025-02-08 08:12:28,965 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: push_~newTop~0#1 := push_#t~ret4#1; [2025-02-08 08:12:28,965 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-2: assume { :end_inline_index_malloc } true;assume -2147483648 <= push_#t~ret4#1 && push_#t~ret4#1 <= 2147483647; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-3: havoc index_malloc_#t~ret1#1, index_malloc_#t~ret2#1, index_malloc_#t~ret3#1, index_malloc_~curr_alloc_idx~0#1; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-4: push_#t~ret4#1 := index_malloc_#res#1; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717: assume 0 == push_~newTop~0#1; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717: assume !(0 == push_~newTop~0#1); [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L742: havoc push_loop_#t~ret10#1; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L709: assume 0 == ~top~0; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L709: assume !(0 == ~top~0); [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L742-1: push_loop_~r~0#1 := push_loop_#t~ret10#1; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L742-2: assume { :end_inline_push } true;assume -2147483648 <= push_loop_#t~ret10#1 && push_loop_#t~ret10#1 <= 2147483647; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L742-3: havoc push_#in~d#1; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L742-4: havoc push_#t~ret4#1, push_#t~ret5#1, push_#t~ret6#1, push_~d#1, push_~oldTop~0#1, push_~newTop~0#1; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L742-5: push_loop_#t~ret10#1 := push_#res#1; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: __VERIFIER_atomic_assert_~r#1 := __VERIFIER_atomic_assert_#in~r#1; [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L726: [2025-02-08 08:12:28,966 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-1: push_#res#1 := 0; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L743: [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L743-1: havoc __VERIFIER_atomic_assert_#in~r#1;assume { :end_inline___VERIFIER_atomic_assert } true; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L743-2: havoc __VERIFIER_atomic_assert_#t~ret7#1, __VERIFIER_atomic_assert_#t~short8#1, __VERIFIER_atomic_assert_~r#1; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L710-1: isEmpty_#res#1 := 1; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L743-3: havoc __VERIFIER_atomic_assert_#t~ret7#1, __VERIFIER_atomic_assert_#t~short8#1, __VERIFIER_atomic_assert_~r#1; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L743-4: assume { :begin_inline___VERIFIER_atomic_assert } true;__VERIFIER_atomic_assert_#in~r#1 := push_loop_~r~0#1; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L727: havoc push_#t~ret6#1; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L727-1: [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L727-2: SUMMARY for call push_#t~ret6#1 := #PthreadsMutexUnlock(~#m~0.base, ~#m~0.offset); srcloc: null [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L727-3: [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736: assume { :end_inline_reach_error } true;assume false; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-1: havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-2: assume { :begin_inline_reach_error } true;havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-3: havoc __VERIFIER_atomic_assert_#t~short8#1; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-4: havoc __VERIFIER_atomic_assert_#t~short8#1; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-5: assume !__VERIFIER_atomic_assert_#t~short8#1; [2025-02-08 08:12:28,967 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-5: assume !!__VERIFIER_atomic_assert_#t~short8#1; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-6: havoc __VERIFIER_atomic_assert_#t~ret7#1; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-7: havoc __VERIFIER_atomic_assert_#t~ret7#1; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-8: __VERIFIER_atomic_assert_#t~short8#1 := 0 == __VERIFIER_atomic_assert_#t~ret7#1; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-9: assume { :end_inline_isEmpty } true;assume -2147483648 <= __VERIFIER_atomic_assert_#t~ret7#1 && __VERIFIER_atomic_assert_#t~ret7#1 <= 2147483647; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L728-1: push_#res#1 := 1; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-10: __VERIFIER_atomic_assert_#t~ret7#1 := isEmpty_#res#1; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-11: assume __VERIFIER_atomic_assert_#t~short8#1; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-11: assume !__VERIFIER_atomic_assert_#t~short8#1; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-12: assume { :begin_inline_isEmpty } true;havoc isEmpty_#res#1; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L736-13: __VERIFIER_atomic_assert_#t~short8#1 := 0 == __VERIFIER_atomic_assert_~r#1; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L720: assume 0 <= push_~newTop~0#1 % 4294967296 && push_~newTop~0#1 % 4294967296 < 641; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L720: assume !(0 <= push_~newTop~0#1 % 4294967296 && push_~newTop~0#1 % 4294967296 < 641); [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L720-1: ~memory~0 := ~memory~0[push_~newTop~0#1 := push_~d#1]; [2025-02-08 08:12:28,968 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L712-1: isEmpty_#res#1 := 0; [2025-02-08 08:12:29,616 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:12:29,616 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:12:44,293 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:12:44,294 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:12:44,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:12:44 BoogieIcfgContainer [2025-02-08 08:12:44,294 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:12:44,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:12:44,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:12:44,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:12:44,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:12:27" (1/3) ... [2025-02-08 08:12:44,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7543aadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:12:44, skipping insertion in model container [2025-02-08 08:12:44,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:28" (2/3) ... [2025-02-08 08:12:44,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7543aadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:12:44, skipping insertion in model container [2025-02-08 08:12:44,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:12:44" (3/3) ... [2025-02-08 08:12:44,303 INFO L128 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-2.i [2025-02-08 08:12:44,319 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:12:44,320 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 25_stack_longer-2.i that has 2 procedures, 25 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2025-02-08 08:12:44,321 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:12:44,475 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:12:44,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 26 transitions, 56 flow [2025-02-08 08:12:44,657 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2025-02-08 08:12:44,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:12:44,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-02-08 08:12:44,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 26 transitions, 56 flow [2025-02-08 08:12:44,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 26 transitions, 56 flow [2025-02-08 08:12:44,677 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:12:44,694 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=None, 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;@795d521e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:12:44,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 08:12:44,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:12:44,821 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-02-08 08:12:44,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:12:44,821 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:44,822 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 08:12:44,822 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:12:44,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1551833, now seen corresponding path program 1 times [2025-02-08 08:12:44,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:12:44,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041647695] [2025-02-08 08:12:44,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:12:44,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms