./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/reorder_2-2.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/reorder_2-2.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 3383b6c07cf534421a7126af6d1505c2131b6416498f0a6ca41b356029c5a1e0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:10:38,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:10:38,551 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:10:38,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:10:38,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:10:38,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:10:38,567 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:10:38,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:10:38,567 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:10:38,567 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:10:38,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:10:38,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:10:38,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:10:38,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:10:38,567 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:10:38,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:10:38,567 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:10:38,568 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:10:38,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:10:38,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:10:38,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:10:38,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:10:38,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:10:38,569 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:10:38,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:10:38,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:10:38,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:10:38,569 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 -> 3383b6c07cf534421a7126af6d1505c2131b6416498f0a6ca41b356029c5a1e0 [2025-02-08 08:10:38,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:10:38,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:10:38,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:10:38,863 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:10:38,864 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:10:38,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/reorder_2-2.i [2025-02-08 08:10:39,952 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6f0e7462b/b2dbe84d127342ffbdec694fd4298e88/FLAGa71f24433 [2025-02-08 08:10:40,351 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:10:40,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/reorder_2-2.i [2025-02-08 08:10:40,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6f0e7462b/b2dbe84d127342ffbdec694fd4298e88/FLAGa71f24433 [2025-02-08 08:10:40,383 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6f0e7462b/b2dbe84d127342ffbdec694fd4298e88 [2025-02-08 08:10:40,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:10:40,385 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:10:40,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:10:40,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:10:40,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:10:40,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1984e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40, skipping insertion in model container [2025-02-08 08:10:40,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:10:40,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:10:40,788 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:10:40,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:10:40,882 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:10:40,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40 WrapperNode [2025-02-08 08:10:40,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:10:40,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:10:40,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:10:40,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:10:40,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,923 INFO L138 Inliner]: procedures = 372, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 125 [2025-02-08 08:10:40,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:10:40,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:10:40,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:10:40,924 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:10:40,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,933 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,948 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-02-08 08:10:40,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,955 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,963 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:10:40,964 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:10:40,964 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:10:40,964 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:10:40,964 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (1/1) ... [2025-02-08 08:10:40,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:10:40,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:10:40,994 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 08:10:41,001 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 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-02-08 08:10:41,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-02-08 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 08:10:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:10:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-02-08 08:10:41,018 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-02-08 08:10:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:10:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 08:10:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 08:10:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:10:41,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:10:41,019 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 08:10:41,124 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:10:41,125 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:10:41,310 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1258: havoc main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset; [2025-02-08 08:10:41,310 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1258-1: SUMMARY for call ULTIMATE.dealloc(main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset); srcloc: null [2025-02-08 08:10:41,310 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1257: havoc main_~#setPool~0#1.base, main_~#setPool~0#1.offset; [2025-02-08 08:10:41,311 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1257-1: SUMMARY for call ULTIMATE.dealloc(main_~#setPool~0#1.base, main_~#setPool~0#1.offset); srcloc: null [2025-02-08 08:10:41,311 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:10:41,312 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:10:41,421 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:10:41,422 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:10:41,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:10:41 BoogieIcfgContainer [2025-02-08 08:10:41,423 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:10:41,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:10:41,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:10:41,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:10:41,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:10:40" (1/3) ... [2025-02-08 08:10:41,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dcbb65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:10:41, skipping insertion in model container [2025-02-08 08:10:41,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:40" (2/3) ... [2025-02-08 08:10:41,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41dcbb65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:10:41, skipping insertion in model container [2025-02-08 08:10:41,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:10:41" (3/3) ... [2025-02-08 08:10:41,450 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_2-2.i [2025-02-08 08:10:41,460 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:10:41,461 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_2-2.i that has 3 procedures, 50 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2025-02-08 08:10:41,461 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:10:41,503 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 08:10:41,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 59 transitions, 138 flow [2025-02-08 08:10:41,578 INFO L124 PetriNetUnfolderBase]: 14/137 cut-off events. [2025-02-08 08:10:41,580 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-08 08:10:41,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 137 events. 14/137 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 663 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 69. Up to 7 conditions per place. [2025-02-08 08:10:41,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 59 transitions, 138 flow [2025-02-08 08:10:41,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 59 transitions, 138 flow [2025-02-08 08:10:41,597 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:10:41,609 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;@2f4ce8f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:10:41,611 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-02-08 08:10:41,614 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:10:41,616 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2025-02-08 08:10:41,616 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:10:41,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:10:41,616 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-08 08:10:41,617 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr9ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2025-02-08 08:10:41,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:10:41,621 INFO L85 PathProgramCache]: Analyzing trace with hash 10214208, now seen corresponding path program 1 times [2025-02-08 08:10:41,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:10:41,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772571841] [2025-02-08 08:10:41,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:10:41,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:10:41,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 08:10:41,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 08:10:41,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:41,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:10:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:10:41,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:10:41,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772571841] [2025-02-08 08:10:41,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772571841] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:10:41,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:10:41,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:10:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963272918] [2025-02-08 08:10:41,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:10:41,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 08:10:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:10:41,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 08:10:41,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 08:10:41,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2025-02-08 08:10:41,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2025-02-08 08:10:41,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:10:41,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2025-02-08 08:10:41,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:10:41,920 INFO L124 PetriNetUnfolderBase]: 286/757 cut-off events. [2025-02-08 08:10:41,920 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-02-08 08:10:41,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 757 events. 286/757 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4675 event pairs, 263 based on Foata normal form. 75/726 useless extension candidates. Maximal degree in co-relation 1022. Up to 528 conditions per place. [2025-02-08 08:10:41,925 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 28 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2025-02-08 08:10:41,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 182 flow [2025-02-08 08:10:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 08:10:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-08 08:10:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 83 transitions. [2025-02-08 08:10:41,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7033898305084746 [2025-02-08 08:10:41,933 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 138 flow. Second operand 2 states and 83 transitions. [2025-02-08 08:10:41,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 182 flow [2025-02-08 08:10:41,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 08:10:41,943 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 126 flow [2025-02-08 08:10:41,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2025-02-08 08:10:41,949 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2025-02-08 08:10:41,949 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 126 flow [2025-02-08 08:10:41,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2025-02-08 08:10:41,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:10:41,950 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 08:10:41,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:10:41,950 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr9ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2025-02-08 08:10:41,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:10:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash 316671639, now seen corresponding path program 1 times [2025-02-08 08:10:41,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:10:41,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453610545] [2025-02-08 08:10:41,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:10:41,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:10:41,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 08:10:41,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 08:10:41,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:41,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:10:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:10:42,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:10:42,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453610545] [2025-02-08 08:10:42,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453610545] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:10:42,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:10:42,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:10:42,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984200269] [2025-02-08 08:10:42,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:10:42,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:10:42,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:10:42,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:10:42,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:10:42,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2025-02-08 08:10:42,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-02-08 08:10:42,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:10:42,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2025-02-08 08:10:42,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:10:42,219 INFO L124 PetriNetUnfolderBase]: 327/816 cut-off events. [2025-02-08 08:10:42,219 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2025-02-08 08:10:42,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 816 events. 327/816 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5168 event pairs, 228 based on Foata normal form. 0/735 useless extension candidates. Maximal degree in co-relation 1453. Up to 464 conditions per place. [2025-02-08 08:10:42,223 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 35 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2025-02-08 08:10:42,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 210 flow [2025-02-08 08:10:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:10:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:10:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-02-08 08:10:42,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2025-02-08 08:10:42,224 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 126 flow. Second operand 3 states and 102 transitions. [2025-02-08 08:10:42,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 210 flow [2025-02-08 08:10:42,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 08:10:42,226 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 126 flow [2025-02-08 08:10:42,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2025-02-08 08:10:42,227 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2025-02-08 08:10:42,227 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 126 flow [2025-02-08 08:10:42,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-02-08 08:10:42,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:10:42,227 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 08:10:42,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:10:42,228 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr9ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2025-02-08 08:10:42,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:10:42,228 INFO L85 PathProgramCache]: Analyzing trace with hash 316671640, now seen corresponding path program 1 times [2025-02-08 08:10:42,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:10:42,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569680363] [2025-02-08 08:10:42,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:10:42,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:10:42,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 08:10:42,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 08:10:42,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:42,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:10:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:10:42,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:10:42,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569680363] [2025-02-08 08:10:42,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569680363] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:10:42,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:10:42,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:10:42,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74310496] [2025-02-08 08:10:42,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:10:42,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:10:42,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:10:42,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:10:42,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:10:42,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2025-02-08 08:10:42,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2025-02-08 08:10:42,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:10:42,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2025-02-08 08:10:42,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:10:42,692 INFO L124 PetriNetUnfolderBase]: 638/1685 cut-off events. [2025-02-08 08:10:42,693 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2025-02-08 08:10:42,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 1685 events. 638/1685 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12831 event pairs, 444 based on Foata normal form. 1/1521 useless extension candidates. Maximal degree in co-relation 2984. Up to 603 conditions per place. [2025-02-08 08:10:42,699 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 57 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2025-02-08 08:10:42,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 82 transitions, 332 flow [2025-02-08 08:10:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:10:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:10:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2025-02-08 08:10:42,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6567796610169492 [2025-02-08 08:10:42,701 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 126 flow. Second operand 4 states and 155 transitions. [2025-02-08 08:10:42,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 82 transitions, 332 flow [2025-02-08 08:10:42,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 82 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:10:42,703 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 148 flow [2025-02-08 08:10:42,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2025-02-08 08:10:42,704 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2025-02-08 08:10:42,704 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 148 flow [2025-02-08 08:10:42,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2025-02-08 08:10:42,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:10:42,704 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:10:42,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:10:42,704 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr9ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2025-02-08 08:10:42,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:10:42,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1296424335, now seen corresponding path program 1 times [2025-02-08 08:10:42,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:10:42,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852958288] [2025-02-08 08:10:42,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:10:42,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:10:42,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:10:42,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:10:42,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:42,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:10:42,727 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:10:42,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:10:42,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:10:42,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:42,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:10:42,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 08:10:42,753 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:10:42,753 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2025-02-08 08:10:42,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX (12 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONARRAY_INDEX (11 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2025-02-08 08:10:42,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2025-02-08 08:10:42,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:10:42,755 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-08 08:10:42,772 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:10:42,772 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:10:42,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:10:42 BasicIcfg [2025-02-08 08:10:42,776 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:10:42,776 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:10:42,776 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:10:42,776 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:10:42,777 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:10:41" (3/4) ... [2025-02-08 08:10:42,777 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:10:42,778 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:10:42,778 INFO L158 Benchmark]: Toolchain (without parser) took 2393.00ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 57.1MB in the end (delta: 52.2MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. [2025-02-08 08:10:42,778 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 201.3MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:42,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.72ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 71.0MB in the end (delta: 38.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-08 08:10:42,779 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.43ms. Allocated memory is still 142.6MB. Free memory was 71.0MB in the beginning and 69.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:42,779 INFO L158 Benchmark]: Boogie Preprocessor took 38.90ms. Allocated memory is still 142.6MB. Free memory was 68.0MB in the beginning and 67.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:42,779 INFO L158 Benchmark]: IcfgBuilder took 459.41ms. Allocated memory is still 142.6MB. Free memory was 67.0MB in the beginning and 39.5MB in the end (delta: 27.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:10:42,779 INFO L158 Benchmark]: TraceAbstraction took 1331.29ms. Allocated memory is still 142.6MB. Free memory was 107.6MB in the beginning and 57.1MB in the end (delta: 50.5MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-02-08 08:10:42,779 INFO L158 Benchmark]: Witness Printer took 2.00ms. Allocated memory is still 142.6MB. Free memory was 57.1MB in the beginning and 57.1MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:42,780 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 201.3MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.72ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 71.0MB in the end (delta: 38.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.43ms. Allocated memory is still 142.6MB. Free memory was 71.0MB in the beginning and 69.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.90ms. Allocated memory is still 142.6MB. Free memory was 68.0MB in the beginning and 67.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 459.41ms. Allocated memory is still 142.6MB. Free memory was 67.0MB in the beginning and 39.5MB in the end (delta: 27.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1331.29ms. Allocated memory is still 142.6MB. Free memory was 107.6MB in the beginning and 57.1MB in the end (delta: 50.5MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 2.00ms. Allocated memory is still 142.6MB. Free memory was 57.1MB in the beginning and 57.1MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: overapproximation of sscanf at line 1253, overapproximation of sscanf at line 1254. Possible FailurePath: [L1238] static int iSet = 2; [L1239] static int iCheck = 2; [L1240] static int a = 0; [L1241] static int b = 0; [L1247] int i, err; VAL [\old(argc)=3, \old(argv)={1073741825:1073741826}, a=0, argc=3, b=0, iCheck=2, iSet=2] [L1248] COND TRUE argc != 1 VAL [\old(argc)=3, \old(argv)={1073741825:1073741826}, a=0, argc=3, b=0, iCheck=2, iSet=2] [L1249] COND FALSE !(argc != 3) VAL [\old(argc)=3, \old(argv)={1073741825:1073741826}, a=0, argc=3, b=0, iCheck=2, iSet=2] [L1253] argv[1] [L1254] argv[2] [L1257] pthread_t setPool[iSet]; [L1258] pthread_t checkPool[iCheck]; [L1259] i = 0 VAL [\old(argc)=3, \old(argv)={1073741825:1073741826}, a=0, argc=3, b=0, checkPool={5:0}, i=0, iCheck=0, iSet=1073741824, setPool={4:0}] [L1259] COND TRUE i < iSet - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1253]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: 1254]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1246]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1260]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1266]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 67 locations, 15 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: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 320 IncrementalHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 4 mSDtfsCounter, 320 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=3, InterpolantAutomatonStates: 9, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 73 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 08:10:42,791 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/reorder_2-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 3383b6c07cf534421a7126af6d1505c2131b6416498f0a6ca41b356029c5a1e0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:10:44,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:10:44,781 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 08:10:44,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:10:44,787 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:10:44,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:10:44,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:10:44,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:10:44,801 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:10:44,801 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:10:44,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:10:44,801 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:10:44,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:10:44,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:10:44,802 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:10:44,802 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:10:44,802 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:10:44,803 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:10:44,803 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:10:44,804 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:10:44,805 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:10:44,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:10:44,805 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:10:44,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:10:44,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:10:44,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:10:44,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:10:44,805 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 08:10:44,806 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 08:10:44,806 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:10:44,806 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:10:44,806 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:10:44,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:10:44,806 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 -> 3383b6c07cf534421a7126af6d1505c2131b6416498f0a6ca41b356029c5a1e0 [2025-02-08 08:10:45,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:10:45,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:10:45,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:10:45,055 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:10:45,056 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:10:45,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/reorder_2-2.i [2025-02-08 08:10:46,254 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1cc206dfb/de44bf07e8cf486fb498ed92ef101639/FLAGfd515551d [2025-02-08 08:10:46,501 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:10:46,502 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/reorder_2-2.i [2025-02-08 08:10:46,523 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1cc206dfb/de44bf07e8cf486fb498ed92ef101639/FLAGfd515551d [2025-02-08 08:10:46,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1cc206dfb/de44bf07e8cf486fb498ed92ef101639 [2025-02-08 08:10:46,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:10:46,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:10:46,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:10:46,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:10:46,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:10:46,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:10:46" (1/1) ... [2025-02-08 08:10:46,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b37311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:46, skipping insertion in model container [2025-02-08 08:10:46,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:10:46" (1/1) ... [2025-02-08 08:10:46,877 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:10:47,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:10:47,243 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:10:47,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:10:47,385 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:10:47,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47 WrapperNode [2025-02-08 08:10:47,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:10:47,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:10:47,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:10:47,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:10:47,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,416 INFO L138 Inliner]: procedures = 375, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2025-02-08 08:10:47,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:10:47,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:10:47,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:10:47,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:10:47,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,427 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,440 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-02-08 08:10:47,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,449 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:10:47,458 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:10:47,458 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:10:47,458 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:10:47,459 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (1/1) ... [2025-02-08 08:10:47,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:10:47,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:10:47,489 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 08:10:47,492 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 08:10:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 08:10:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 08:10:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-08 08:10:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:10:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 08:10:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 08:10:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 08:10:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 08:10:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-08 08:10:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 08:10:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 08:10:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-08 08:10:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:10:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-02-08 08:10:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-02-08 08:10:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:10:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-02-08 08:10:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-02-08 08:10:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:10:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:10:47,508 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 08:10:47,623 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:10:47,624 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:10:47,887 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1258: havoc main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset; [2025-02-08 08:10:47,887 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1258-1: SUMMARY for call ULTIMATE.dealloc(main_~#checkPool~0#1.base, main_~#checkPool~0#1.offset); srcloc: null [2025-02-08 08:10:47,887 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1257: havoc main_~#setPool~0#1.base, main_~#setPool~0#1.offset; [2025-02-08 08:10:47,887 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1257-1: SUMMARY for call ULTIMATE.dealloc(main_~#setPool~0#1.base, main_~#setPool~0#1.offset); srcloc: null [2025-02-08 08:10:47,888 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:10:47,888 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:10:47,977 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:10:47,977 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:10:47,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:10:47 BoogieIcfgContainer [2025-02-08 08:10:47,977 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:10:47,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:10:47,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:10:47,982 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:10:47,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:10:46" (1/3) ... [2025-02-08 08:10:47,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263d13fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:10:47, skipping insertion in model container [2025-02-08 08:10:47,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:47" (2/3) ... [2025-02-08 08:10:47,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263d13fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:10:47, skipping insertion in model container [2025-02-08 08:10:47,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:10:47" (3/3) ... [2025-02-08 08:10:47,983 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_2-2.i [2025-02-08 08:10:47,993 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:10:47,994 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_2-2.i that has 3 procedures, 50 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2025-02-08 08:10:47,994 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:10:48,055 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 08:10:48,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 59 transitions, 138 flow [2025-02-08 08:10:48,124 INFO L124 PetriNetUnfolderBase]: 14/137 cut-off events. [2025-02-08 08:10:48,125 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-08 08:10:48,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 137 events. 14/137 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 655 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 69. Up to 7 conditions per place. [2025-02-08 08:10:48,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 59 transitions, 138 flow [2025-02-08 08:10:48,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 59 transitions, 138 flow [2025-02-08 08:10:48,142 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:10:48,153 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;@54e7abaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:10:48,153 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-02-08 08:10:48,157 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:10:48,157 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2025-02-08 08:10:48,157 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:10:48,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:10:48,158 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-08 08:10:48,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr9ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2025-02-08 08:10:48,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:10:48,165 INFO L85 PathProgramCache]: Analyzing trace with hash 10152668, now seen corresponding path program 1 times [2025-02-08 08:10:48,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:10:48,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807262400] [2025-02-08 08:10:48,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:10:48,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:10:48,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:10:48,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:10:48,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:10:48,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 08:10:48,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 08:10:48,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:48,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:10:48,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 08:10:48,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:10:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:10:48,259 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:10:48,259 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:10:48,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807262400] [2025-02-08 08:10:48,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807262400] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:10:48,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:10:48,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:10:48,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173156658] [2025-02-08 08:10:48,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:10:48,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 08:10:48,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:10:48,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 08:10:48,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 08:10:48,284 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2025-02-08 08:10:48,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2025-02-08 08:10:48,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:10:48,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2025-02-08 08:10:48,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:10:48,447 INFO L124 PetriNetUnfolderBase]: 286/757 cut-off events. [2025-02-08 08:10:48,447 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-02-08 08:10:48,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 757 events. 286/757 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4669 event pairs, 263 based on Foata normal form. 75/725 useless extension candidates. Maximal degree in co-relation 1022. Up to 528 conditions per place. [2025-02-08 08:10:48,452 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 28 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2025-02-08 08:10:48,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 182 flow [2025-02-08 08:10:48,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 08:10:48,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-08 08:10:48,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 83 transitions. [2025-02-08 08:10:48,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7033898305084746 [2025-02-08 08:10:48,467 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 138 flow. Second operand 2 states and 83 transitions. [2025-02-08 08:10:48,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 182 flow [2025-02-08 08:10:48,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 08:10:48,474 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 126 flow [2025-02-08 08:10:48,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2025-02-08 08:10:48,479 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2025-02-08 08:10:48,480 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 126 flow [2025-02-08 08:10:48,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2025-02-08 08:10:48,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:10:48,481 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 08:10:48,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 08:10:48,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:10:48,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr9ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2025-02-08 08:10:48,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:10:48,683 INFO L85 PathProgramCache]: Analyzing trace with hash 314764951, now seen corresponding path program 1 times [2025-02-08 08:10:48,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:10:48,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540115576] [2025-02-08 08:10:48,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:10:48,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:10:48,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:10:48,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:10:48,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:10:48,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 08:10:48,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 08:10:48,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:48,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:10:48,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:10:48,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:10:48,816 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-02-08 08:10:48,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2025-02-08 08:10:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:10:48,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:10:48,841 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:10:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540115576] [2025-02-08 08:10:48,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540115576] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:10:48,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:10:48,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:10:48,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289763673] [2025-02-08 08:10:48,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:10:48,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:10:48,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:10:48,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:10:48,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:10:48,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 59 [2025-02-08 08:10:48,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-02-08 08:10:48,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:10:48,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 59 [2025-02-08 08:10:48,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:10:49,005 INFO L124 PetriNetUnfolderBase]: 327/816 cut-off events. [2025-02-08 08:10:49,005 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2025-02-08 08:10:49,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 816 events. 327/816 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5179 event pairs, 228 based on Foata normal form. 0/734 useless extension candidates. Maximal degree in co-relation 1453. Up to 464 conditions per place. [2025-02-08 08:10:49,010 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 35 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2025-02-08 08:10:49,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 210 flow [2025-02-08 08:10:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:10:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:10:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-02-08 08:10:49,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2025-02-08 08:10:49,011 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 126 flow. Second operand 3 states and 102 transitions. [2025-02-08 08:10:49,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 210 flow [2025-02-08 08:10:49,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 08:10:49,013 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 126 flow [2025-02-08 08:10:49,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2025-02-08 08:10:49,014 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2025-02-08 08:10:49,014 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 126 flow [2025-02-08 08:10:49,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-02-08 08:10:49,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:10:49,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 08:10:49,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 08:10:49,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:10:49,215 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr9ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2025-02-08 08:10:49,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:10:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash 314764952, now seen corresponding path program 1 times [2025-02-08 08:10:49,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:10:49,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532352645] [2025-02-08 08:10:49,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:10:49,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:10:49,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:10:49,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:10:49,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:10:49,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 08:10:49,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 08:10:49,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:49,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:10:49,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:10:49,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:10:49,345 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-08 08:10:49,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2025-02-08 08:10:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:10:49,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:10:49,383 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:10:49,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532352645] [2025-02-08 08:10:49,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532352645] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:10:49,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:10:49,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:10:49,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198344219] [2025-02-08 08:10:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:10:49,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:10:49,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:10:49,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:10:49,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:10:49,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2025-02-08 08:10:49,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2025-02-08 08:10:49,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:10:49,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2025-02-08 08:10:49,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:10:49,727 INFO L124 PetriNetUnfolderBase]: 638/1663 cut-off events. [2025-02-08 08:10:49,728 INFO L125 PetriNetUnfolderBase]: For 129/130 co-relation queries the response was YES. [2025-02-08 08:10:49,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2968 conditions, 1663 events. 638/1663 cut-off events. For 129/130 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12602 event pairs, 597 based on Foata normal form. 1/1504 useless extension candidates. Maximal degree in co-relation 2962. Up to 603 conditions per place. [2025-02-08 08:10:49,736 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 57 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2025-02-08 08:10:49,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 82 transitions, 332 flow [2025-02-08 08:10:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:10:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:10:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2025-02-08 08:10:49,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6567796610169492 [2025-02-08 08:10:49,739 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 126 flow. Second operand 4 states and 155 transitions. [2025-02-08 08:10:49,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 82 transitions, 332 flow [2025-02-08 08:10:49,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 82 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:10:49,744 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 148 flow [2025-02-08 08:10:49,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2025-02-08 08:10:49,745 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2025-02-08 08:10:49,745 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 148 flow [2025-02-08 08:10:49,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2025-02-08 08:10:49,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:10:49,745 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:10:49,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 08:10:49,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:10:49,950 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr9ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2025-02-08 08:10:49,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:10:49,951 INFO L85 PathProgramCache]: Analyzing trace with hash 298291345, now seen corresponding path program 1 times [2025-02-08 08:10:49,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:10:49,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122583476] [2025-02-08 08:10:49,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:10:49,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:10:49,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:10:49,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:10:49,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 08:10:50,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:10:50,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:10:50,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:50,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:10:50,020 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:10:50,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:10:50,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:10:50,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:50,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:10:50,049 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-08 08:10:50,049 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:10:50,050 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2025-02-08 08:10:50,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2025-02-08 08:10:50,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONARRAY_INDEX (12 of 15 remaining) [2025-02-08 08:10:50,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONARRAY_INDEX (11 of 15 remaining) [2025-02-08 08:10:50,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2025-02-08 08:10:50,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2025-02-08 08:10:50,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2025-02-08 08:10:50,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2025-02-08 08:10:50,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2025-02-08 08:10:50,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2025-02-08 08:10:50,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2025-02-08 08:10:50,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 15 remaining) [2025-02-08 08:10:50,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2025-02-08 08:10:50,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2025-02-08 08:10:50,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2025-02-08 08:10:50,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 08:10:50,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:10:50,253 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-08 08:10:50,268 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:10:50,268 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:10:50,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:10:50 BasicIcfg [2025-02-08 08:10:50,272 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:10:50,273 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:10:50,273 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:10:50,273 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:10:50,274 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:10:47" (3/4) ... [2025-02-08 08:10:50,276 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:10:50,277 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:10:50,278 INFO L158 Benchmark]: Toolchain (without parser) took 3439.68ms. Allocated memory was 83.9MB in the beginning and 117.4MB in the end (delta: 33.6MB). Free memory was 57.3MB in the beginning and 77.4MB in the end (delta: -20.1MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2025-02-08 08:10:50,278 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory was 61.8MB in the beginning and 61.8MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:50,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 547.81ms. Allocated memory is still 83.9MB. Free memory was 57.0MB in the beginning and 53.3MB in the end (delta: 3.7MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2025-02-08 08:10:50,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.44ms. Allocated memory is still 83.9MB. Free memory was 53.3MB in the beginning and 51.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:50,278 INFO L158 Benchmark]: Boogie Preprocessor took 40.88ms. Allocated memory is still 83.9MB. Free memory was 51.1MB in the beginning and 48.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:50,279 INFO L158 Benchmark]: IcfgBuilder took 519.37ms. Allocated memory is still 83.9MB. Free memory was 48.9MB in the beginning and 35.2MB in the end (delta: 13.7MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2025-02-08 08:10:50,279 INFO L158 Benchmark]: TraceAbstraction took 2293.52ms. Allocated memory was 83.9MB in the beginning and 117.4MB in the end (delta: 33.6MB). Free memory was 34.4MB in the beginning and 77.4MB in the end (delta: -42.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:50,279 INFO L158 Benchmark]: Witness Printer took 3.86ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 77.4MB in the end (delta: 4.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:50,280 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory was 61.8MB in the beginning and 61.8MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 547.81ms. Allocated memory is still 83.9MB. Free memory was 57.0MB in the beginning and 53.3MB in the end (delta: 3.7MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.44ms. Allocated memory is still 83.9MB. Free memory was 53.3MB in the beginning and 51.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.88ms. Allocated memory is still 83.9MB. Free memory was 51.1MB in the beginning and 48.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 519.37ms. Allocated memory is still 83.9MB. Free memory was 48.9MB in the beginning and 35.2MB in the end (delta: 13.7MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2293.52ms. Allocated memory was 83.9MB in the beginning and 117.4MB in the end (delta: 33.6MB). Free memory was 34.4MB in the beginning and 77.4MB in the end (delta: -42.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.86ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 77.4MB in the end (delta: 4.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: overapproximation of sscanf at line 1253, overapproximation of sscanf at line 1254. Possible FailurePath: [L1238] static int iSet = 2; [L1239] static int iCheck = 2; [L1240] static int a = 0; [L1241] static int b = 0; [L1247] int i, err; VAL [\old(argc)=3, \old(argv)={0:0}, a=0, argc=3, b=0, iCheck=2, iSet=2] [L1248] COND TRUE argc != 1 VAL [\old(argc)=3, \old(argv)={0:0}, a=0, argc=3, b=0, iCheck=2, iSet=2] [L1249] COND FALSE !(argc != 3) VAL [\old(argc)=3, \old(argv)={0:0}, a=0, argc=3, b=0, iCheck=2, iSet=2] [L1253] argv[1] [L1254] argv[2] [L1257] pthread_t setPool[iSet]; [L1258] pthread_t checkPool[iCheck]; [L1259] i = 0 VAL [\old(argc)=3, \old(argv)={0:0}, a=0, argc=3, b=0, checkPool={7:0}, i=0, iCheck=0, iSet=1073741824, setPool={3:0}] [L1259] COND TRUE i < iSet - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1253]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: 1254]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1246]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1260]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1266]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 67 locations, 15 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: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 225 IncrementalHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 21 mSDtfsCounter, 225 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=3, InterpolantAutomatonStates: 9, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 4 QuantifiedInterpolants, 87 SizeOfPredicates, 4 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 08:10:50,293 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: UNKNOWN: Overapproximated counterexample