./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-races/race-1_2-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-races/race-1_2-join.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G 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 fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:23:22,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:23:22,577 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:23:22,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:23:22,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:23:22,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:23:22,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:23:22,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:23:22,604 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:23:22,607 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:23:22,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:23:22,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:23:22,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:23:22,608 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:23:22,608 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:23:22,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:23:22,608 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:23:22,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:23:22,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:23:22,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:23:22,609 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:23:22,611 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:23:22,611 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:23:22,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:23:22,612 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:23:22,612 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:23:22,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:23:22,612 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:23:22,612 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:23:22,612 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:23:22,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:23:22,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:23:22,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:23:22,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:23:22,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:23:22,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:23:22,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:23:22,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:23:22,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:23:22,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:23:22,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:23:22,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:23:22,615 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2024-11-17 03:23:22,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:23:22,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:23:22,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:23:22,840 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:23:22,840 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:23:22,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-1_2-join.i [2024-11-17 03:23:24,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:23:24,317 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:23:24,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i [2024-11-17 03:23:24,336 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400231634/933f2ddbc03e46828d1fb8df3c998eff/FLAG3710236b5 [2024-11-17 03:23:24,349 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400231634/933f2ddbc03e46828d1fb8df3c998eff [2024-11-17 03:23:24,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:23:24,352 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:23:24,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:23:24,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:23:24,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:23:24,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:23:24" (1/1) ... [2024-11-17 03:23:24,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e7d1ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:24, skipping insertion in model container [2024-11-17 03:23:24,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:23:24" (1/1) ... [2024-11-17 03:23:24,404 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:23:24,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:23:24,850 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:23:24,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:23:25,040 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:23:25,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25 WrapperNode [2024-11-17 03:23:25,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:23:25,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:23:25,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:23:25,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:23:25,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,088 INFO L138 Inliner]: procedures = 483, calls = 31, calls flagged for inlining = 9, calls inlined = 12, statements flattened = 93 [2024-11-17 03:23:25,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:23:25,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:23:25,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:23:25,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:23:25,099 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,104 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,115 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 1, 5]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 1 writes are split as follows [0, 1, 0]. [2024-11-17 03:23:25,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,120 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,133 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,154 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:23:25,155 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:23:25,155 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:23:25,155 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:23:25,155 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (1/1) ... [2024-11-17 03:23:25,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:23:25,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:23:25,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:23:25,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:23:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:23:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:23:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:23:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:23:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:23:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 03:23:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 03:23:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 03:23:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:23:25,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:23:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:23:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:23:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 03:23:25,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 03:23:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:23:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:23:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:23:25,228 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:23:25,465 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:23:25,466 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:23:25,625 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:23:25,625 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:23:25,716 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:23:25,717 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:23:25,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:23:25 BoogieIcfgContainer [2024-11-17 03:23:25,717 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:23:25,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:23:25,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:23:25,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:23:25,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:23:24" (1/3) ... [2024-11-17 03:23:25,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261512ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:23:25, skipping insertion in model container [2024-11-17 03:23:25,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:25" (2/3) ... [2024-11-17 03:23:25,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261512ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:23:25, skipping insertion in model container [2024-11-17 03:23:25,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:23:25" (3/3) ... [2024-11-17 03:23:25,724 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2024-11-17 03:23:25,736 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:23:25,736 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-17 03:23:25,736 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:23:25,761 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 03:23:25,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 50 transitions, 107 flow [2024-11-17 03:23:25,812 INFO L124 PetriNetUnfolderBase]: 7/55 cut-off events. [2024-11-17 03:23:25,812 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:23:25,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 55 events. 7/55 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 25. Up to 3 conditions per place. [2024-11-17 03:23:25,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 50 transitions, 107 flow [2024-11-17 03:23:25,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 48 transitions, 102 flow [2024-11-17 03:23:25,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:23:25,838 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;@311a1c76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:23:25,838 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-17 03:23:25,841 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:23:25,843 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2024-11-17 03:23:25,843 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:23:25,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:25,844 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:23:25,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-17 03:23:25,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:25,850 INFO L85 PathProgramCache]: Analyzing trace with hash 8977132, now seen corresponding path program 1 times [2024-11-17 03:23:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:25,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961612138] [2024-11-17 03:23:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:25,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:26,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:26,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961612138] [2024-11-17 03:23:26,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961612138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:26,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:26,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:23:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459991671] [2024-11-17 03:23:26,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:26,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:23:26,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:26,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:23:26,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:23:26,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-11-17 03:23:26,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-17 03:23:26,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:26,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-11-17 03:23:26,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:26,291 INFO L124 PetriNetUnfolderBase]: 33/103 cut-off events. [2024-11-17 03:23:26,291 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:23:26,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 103 events. 33/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 335 event pairs, 32 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 160. Up to 87 conditions per place. [2024-11-17 03:23:26,293 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 18 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2024-11-17 03:23:26,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 114 flow [2024-11-17 03:23:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:23:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:23:26,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-17 03:23:26,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-11-17 03:23:26,305 INFO L175 Difference]: Start difference. First operand has 44 places, 48 transitions, 102 flow. Second operand 3 states and 66 transitions. [2024-11-17 03:23:26,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 114 flow [2024-11-17 03:23:26,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:23:26,309 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 74 flow [2024-11-17 03:23:26,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-17 03:23:26,314 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -12 predicate places. [2024-11-17 03:23:26,314 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 74 flow [2024-11-17 03:23:26,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-17 03:23:26,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:26,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:23:26,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:23:26,314 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-17 03:23:26,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:26,315 INFO L85 PathProgramCache]: Analyzing trace with hash -213481081, now seen corresponding path program 1 times [2024-11-17 03:23:26,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:26,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785029] [2024-11-17 03:23:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:26,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785029] [2024-11-17 03:23:26,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:26,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:26,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:23:26,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205841624] [2024-11-17 03:23:26,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:26,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:23:26,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:26,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:23:26,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:23:26,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-17 03:23:26,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-17 03:23:26,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:26,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-17 03:23:26,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:26,504 INFO L124 PetriNetUnfolderBase]: 41/135 cut-off events. [2024-11-17 03:23:26,505 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:23:26,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 135 events. 41/135 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 511 event pairs, 14 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 224. Up to 63 conditions per place. [2024-11-17 03:23:26,508 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 28 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-11-17 03:23:26,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 163 flow [2024-11-17 03:23:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:23:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:23:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-17 03:23:26,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-17 03:23:26,510 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 74 flow. Second operand 3 states and 81 transitions. [2024-11-17 03:23:26,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 163 flow [2024-11-17 03:23:26,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 149 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:23:26,513 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 92 flow [2024-11-17 03:23:26,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-17 03:23:26,514 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -10 predicate places. [2024-11-17 03:23:26,515 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 92 flow [2024-11-17 03:23:26,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-17 03:23:26,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:26,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:23:26,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:23:26,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-17 03:23:26,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1399006852, now seen corresponding path program 1 times [2024-11-17 03:23:26,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:26,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682583439] [2024-11-17 03:23:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:26,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:26,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682583439] [2024-11-17 03:23:26,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682583439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:26,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:26,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:23:26,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985882268] [2024-11-17 03:23:26,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:26,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:23:26,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:26,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:23:26,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:23:26,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-17 03:23:26,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-11-17 03:23:26,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:26,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-17 03:23:26,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:26,662 INFO L124 PetriNetUnfolderBase]: 40/128 cut-off events. [2024-11-17 03:23:26,662 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-17 03:23:26,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 128 events. 40/128 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 437 event pairs, 30 based on Foata normal form. 9/123 useless extension candidates. Maximal degree in co-relation 62. Up to 94 conditions per place. [2024-11-17 03:23:26,663 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 24 selfloop transitions, 2 changer transitions 5/38 dead transitions. [2024-11-17 03:23:26,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 166 flow [2024-11-17 03:23:26,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:23:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:23:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-17 03:23:26,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4866666666666667 [2024-11-17 03:23:26,665 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 92 flow. Second operand 3 states and 73 transitions. [2024-11-17 03:23:26,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 166 flow [2024-11-17 03:23:26,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:23:26,666 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 84 flow [2024-11-17 03:23:26,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2024-11-17 03:23:26,667 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -9 predicate places. [2024-11-17 03:23:26,667 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 84 flow [2024-11-17 03:23:26,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-11-17 03:23:26,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:26,669 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:23:26,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:23:26,669 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-17 03:23:26,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:26,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1294681349, now seen corresponding path program 1 times [2024-11-17 03:23:26,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:26,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540337690] [2024-11-17 03:23:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:26,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:23:26,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:23:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:23:26,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:23:26,721 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:23:26,721 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2024-11-17 03:23:26,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-17 03:23:26,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-17 03:23:26,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-17 03:23:26,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2024-11-17 03:23:26,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-17 03:23:26,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-17 03:23:26,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-11-17 03:23:26,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:23:26,724 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:23:26,749 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-17 03:23:26,749 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 03:23:26,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:23:26 BasicIcfg [2024-11-17 03:23:26,754 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 03:23:26,754 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 03:23:26,754 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 03:23:26,754 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 03:23:26,755 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:23:25" (3/4) ... [2024-11-17 03:23:26,757 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-17 03:23:26,757 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 03:23:26,758 INFO L158 Benchmark]: Toolchain (without parser) took 2406.30ms. Allocated memory is still 174.1MB. Free memory was 101.0MB in the beginning and 122.9MB in the end (delta: -21.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:23:26,760 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory was 81.2MB in the beginning and 81.0MB in the end (delta: 155.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 03:23:26,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 689.23ms. Allocated memory is still 174.1MB. Free memory was 100.7MB in the beginning and 114.7MB in the end (delta: -14.0MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2024-11-17 03:23:26,760 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.26ms. Allocated memory is still 174.1MB. Free memory was 114.7MB in the beginning and 111.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 03:23:26,761 INFO L158 Benchmark]: Boogie Preprocessor took 64.62ms. Allocated memory is still 174.1MB. Free memory was 111.4MB in the beginning and 108.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 03:23:26,761 INFO L158 Benchmark]: IcfgBuilder took 562.48ms. Allocated memory is still 174.1MB. Free memory was 108.5MB in the beginning and 74.9MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-17 03:23:26,761 INFO L158 Benchmark]: TraceAbstraction took 1035.56ms. Allocated memory is still 174.1MB. Free memory was 73.6MB in the beginning and 122.9MB in the end (delta: -49.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:23:26,761 INFO L158 Benchmark]: Witness Printer took 3.65ms. Allocated memory is still 174.1MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:23:26,765 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory was 81.2MB in the beginning and 81.0MB in the end (delta: 155.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 689.23ms. Allocated memory is still 174.1MB. Free memory was 100.7MB in the beginning and 114.7MB in the end (delta: -14.0MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.26ms. Allocated memory is still 174.1MB. Free memory was 114.7MB in the beginning and 111.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.62ms. Allocated memory is still 174.1MB. Free memory was 111.4MB in the beginning and 108.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 562.48ms. Allocated memory is still 174.1MB. Free memory was 108.5MB in the beginning and 74.9MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1035.56ms. Allocated memory is still 174.1MB. Free memory was 73.6MB in the beginning and 122.9MB in the end (delta: -49.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.65ms. Allocated memory is still 174.1MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1693. Possible FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, mutex={3:0}, pdev=1, t1=0] [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [\old(arg)={0:0}, mutex={3:0}, pdev=1, t1=-1] [L1714] 0 pdev = 2 VAL [\old(arg)={0:0}, arg={0:0}, mutex={3:0}, pdev=2, t1=-1] [L1702] 1 pdev = 6 VAL [\old(arg)={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1=-1] [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] CALL 0 reach_error() [L1693] COND FALSE 0 !(0) [L1693] 0 __assert_fail ("0", "race-1_2-join.c", 10, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1=-1] - UnprovableResult [Line: 1693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1733]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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: 1693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1712]: 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 3 procedures, 51 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=0, 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, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-17 03:23:26,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-races/race-1_2-join.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G 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 fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:23:28,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:23:28,623 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-17 03:23:28,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:23:28,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:23:28,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:23:28,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:23:28,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:23:28,655 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:23:28,658 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:23:28,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:23:28,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:23:28,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:23:28,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:23:28,659 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:23:28,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:23:28,659 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:23:28,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:23:28,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:23:28,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:23:28,660 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:23:28,660 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:23:28,661 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:23:28,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:23:28,662 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:23:28,662 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-17 03:23:28,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:23:28,662 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-17 03:23:28,662 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:23:28,662 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:23:28,662 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:23:28,663 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:23:28,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:23:28,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:23:28,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:23:28,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:23:28,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:23:28,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:23:28,664 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-17 03:23:28,664 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-17 03:23:28,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:23:28,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:23:28,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:23:28,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:23:28,665 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2024-11-17 03:23:28,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:23:28,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:23:28,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:23:28,918 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:23:28,919 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:23:28,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-1_2-join.i [2024-11-17 03:23:30,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:23:30,439 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:23:30,441 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i [2024-11-17 03:23:30,461 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4be716d/d0a8fac5d7be4c81892a1115655f037a/FLAG5b567b33c [2024-11-17 03:23:30,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4be716d/d0a8fac5d7be4c81892a1115655f037a [2024-11-17 03:23:30,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:23:30,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:23:30,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:23:30,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:23:30,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:23:30,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:23:30" (1/1) ... [2024-11-17 03:23:30,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2c6547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:30, skipping insertion in model container [2024-11-17 03:23:30,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:23:30" (1/1) ... [2024-11-17 03:23:30,806 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:23:31,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:23:31,453 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:23:31,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:23:31,599 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:23:31,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31 WrapperNode [2024-11-17 03:23:31,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:23:31,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:23:31,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:23:31,603 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:23:31,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,666 INFO L138 Inliner]: procedures = 487, calls = 31, calls flagged for inlining = 9, calls inlined = 12, statements flattened = 92 [2024-11-17 03:23:31,667 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:23:31,667 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:23:31,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:23:31,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:23:31,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,678 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,689 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-11-17 03:23:31,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,700 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:23:31,713 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:23:31,713 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:23:31,713 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:23:31,714 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (1/1) ... [2024-11-17 03:23:31,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:23:31,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:23:31,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:23:31,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:23:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:23:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:23:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-17 03:23:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-17 03:23:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-17 03:23:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-17 03:23:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-17 03:23:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-17 03:23:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:23:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:23:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:23:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 03:23:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 03:23:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 03:23:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:23:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:23:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:23:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:23:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 03:23:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 03:23:31,802 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:23:32,062 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:23:32,064 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:23:32,247 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:23:32,247 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:23:32,367 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:23:32,368 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:23:32,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:23:32 BoogieIcfgContainer [2024-11-17 03:23:32,368 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:23:32,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:23:32,371 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:23:32,374 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:23:32,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:23:30" (1/3) ... [2024-11-17 03:23:32,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bb8bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:23:32, skipping insertion in model container [2024-11-17 03:23:32,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:31" (2/3) ... [2024-11-17 03:23:32,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bb8bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:23:32, skipping insertion in model container [2024-11-17 03:23:32,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:23:32" (3/3) ... [2024-11-17 03:23:32,376 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2024-11-17 03:23:32,388 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:23:32,389 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-17 03:23:32,389 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:23:32,421 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 03:23:32,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 50 transitions, 107 flow [2024-11-17 03:23:32,475 INFO L124 PetriNetUnfolderBase]: 7/55 cut-off events. [2024-11-17 03:23:32,476 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:23:32,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 55 events. 7/55 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 25. Up to 3 conditions per place. [2024-11-17 03:23:32,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 50 transitions, 107 flow [2024-11-17 03:23:32,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 48 transitions, 102 flow [2024-11-17 03:23:32,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:23:32,496 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;@6891061e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:23:32,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-17 03:23:32,501 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:23:32,501 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2024-11-17 03:23:32,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:23:32,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:32,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:23:32,502 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-17 03:23:32,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:32,507 INFO L85 PathProgramCache]: Analyzing trace with hash 8915564, now seen corresponding path program 1 times [2024-11-17 03:23:32,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:23:32,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860320899] [2024-11-17 03:23:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:32,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:23:32,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:23:32,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:23:32,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-17 03:23:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:32,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 03:23:32,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:23:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:32,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:23:32,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:23:32,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860320899] [2024-11-17 03:23:32,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860320899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:32,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:32,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:23:32,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166483363] [2024-11-17 03:23:32,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:32,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:23:32,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:23:32,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:23:32,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:23:32,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-17 03:23:32,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-17 03:23:32,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:32,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-17 03:23:32,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:32,810 INFO L124 PetriNetUnfolderBase]: 33/103 cut-off events. [2024-11-17 03:23:32,811 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:23:32,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 103 events. 33/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 32 based on Foata normal form. 3/91 useless extension candidates. Maximal degree in co-relation 160. Up to 87 conditions per place. [2024-11-17 03:23:32,813 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 15 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2024-11-17 03:23:32,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 108 flow [2024-11-17 03:23:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:23:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:23:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-17 03:23:32,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-17 03:23:32,823 INFO L175 Difference]: Start difference. First operand has 44 places, 48 transitions, 102 flow. Second operand 3 states and 72 transitions. [2024-11-17 03:23:32,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 108 flow [2024-11-17 03:23:32,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:23:32,827 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 74 flow [2024-11-17 03:23:32,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-17 03:23:32,831 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -12 predicate places. [2024-11-17 03:23:32,831 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 74 flow [2024-11-17 03:23:32,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-17 03:23:32,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:32,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:23:32,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-17 03:23:33,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:23:33,033 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-17 03:23:33,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:33,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1238308729, now seen corresponding path program 1 times [2024-11-17 03:23:33,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:23:33,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275373101] [2024-11-17 03:23:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:33,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:23:33,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:23:33,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:23:33,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-17 03:23:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:33,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 03:23:33,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:23:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:33,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:23:33,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:23:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275373101] [2024-11-17 03:23:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275373101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:33,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:33,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:23:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926386648] [2024-11-17 03:23:33,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:33,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:23:33,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:23:33,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:23:33,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:23:33,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-17 03:23:33,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-17 03:23:33,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:33,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-17 03:23:33,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:33,217 INFO L124 PetriNetUnfolderBase]: 41/135 cut-off events. [2024-11-17 03:23:33,218 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:23:33,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 135 events. 41/135 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 511 event pairs, 14 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 224. Up to 63 conditions per place. [2024-11-17 03:23:33,220 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 28 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-11-17 03:23:33,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 163 flow [2024-11-17 03:23:33,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:23:33,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:23:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-17 03:23:33,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-17 03:23:33,223 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 74 flow. Second operand 3 states and 81 transitions. [2024-11-17 03:23:33,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 163 flow [2024-11-17 03:23:33,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 149 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:23:33,225 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 92 flow [2024-11-17 03:23:33,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-17 03:23:33,227 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -10 predicate places. [2024-11-17 03:23:33,227 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 92 flow [2024-11-17 03:23:33,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-17 03:23:33,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:33,229 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:23:33,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-17 03:23:33,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:23:33,430 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-17 03:23:33,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash 87147844, now seen corresponding path program 1 times [2024-11-17 03:23:33,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:23:33,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878628672] [2024-11-17 03:23:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:33,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:23:33,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:23:33,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:23:33,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-17 03:23:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:33,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 03:23:33,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:23:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:33,539 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:23:33,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:23:33,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878628672] [2024-11-17 03:23:33,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878628672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:33,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:33,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:23:33,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620648998] [2024-11-17 03:23:33,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:33,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:23:33,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:23:33,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:23:33,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:23:33,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-17 03:23:33,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-11-17 03:23:33,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:33,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-17 03:23:33,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:33,663 INFO L124 PetriNetUnfolderBase]: 40/128 cut-off events. [2024-11-17 03:23:33,664 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-17 03:23:33,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 128 events. 40/128 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 436 event pairs, 30 based on Foata normal form. 9/123 useless extension candidates. Maximal degree in co-relation 62. Up to 94 conditions per place. [2024-11-17 03:23:33,665 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 24 selfloop transitions, 2 changer transitions 5/38 dead transitions. [2024-11-17 03:23:33,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 166 flow [2024-11-17 03:23:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:23:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:23:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-17 03:23:33,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4866666666666667 [2024-11-17 03:23:33,668 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 92 flow. Second operand 3 states and 73 transitions. [2024-11-17 03:23:33,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 166 flow [2024-11-17 03:23:33,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:23:33,670 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 84 flow [2024-11-17 03:23:33,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2024-11-17 03:23:33,670 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -9 predicate places. [2024-11-17 03:23:33,670 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 84 flow [2024-11-17 03:23:33,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-11-17 03:23:33,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:33,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:23:33,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-17 03:23:33,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:23:33,872 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-17 03:23:33,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:33,872 INFO L85 PathProgramCache]: Analyzing trace with hash -976407675, now seen corresponding path program 1 times [2024-11-17 03:23:33,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:23:33,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435379801] [2024-11-17 03:23:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:33,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:23:33,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:23:33,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:23:33,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-17 03:23:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:23:33,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:23:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:23:34,002 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-17 03:23:34,002 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:23:34,003 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2024-11-17 03:23:34,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-17 03:23:34,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-17 03:23:34,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-17 03:23:34,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2024-11-17 03:23:34,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-17 03:23:34,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-17 03:23:34,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-11-17 03:23:34,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-17 03:23:34,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:23:34,206 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:23:34,231 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-17 03:23:34,232 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 03:23:34,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:23:34 BasicIcfg [2024-11-17 03:23:34,238 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 03:23:34,238 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 03:23:34,238 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 03:23:34,239 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 03:23:34,239 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:23:32" (3/4) ... [2024-11-17 03:23:34,241 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-17 03:23:34,242 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 03:23:34,242 INFO L158 Benchmark]: Toolchain (without parser) took 3494.40ms. Allocated memory was 69.2MB in the beginning and 113.2MB in the end (delta: 44.0MB). Free memory was 42.6MB in the beginning and 60.7MB in the end (delta: -18.1MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2024-11-17 03:23:34,243 INFO L158 Benchmark]: CDTParser took 0.70ms. Allocated memory is still 69.2MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:23:34,243 INFO L158 Benchmark]: CACSL2BoogieTranslator took 853.82ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 42.5MB in the beginning and 45.4MB in the end (delta: -2.9MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2024-11-17 03:23:34,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.81ms. Allocated memory is still 90.2MB. Free memory was 45.4MB in the beginning and 42.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 03:23:34,244 INFO L158 Benchmark]: Boogie Preprocessor took 41.95ms. Allocated memory is still 90.2MB. Free memory was 42.0MB in the beginning and 37.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 03:23:34,244 INFO L158 Benchmark]: IcfgBuilder took 655.39ms. Allocated memory is still 90.2MB. Free memory was 37.8MB in the beginning and 42.1MB in the end (delta: -4.3MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2024-11-17 03:23:34,245 INFO L158 Benchmark]: TraceAbstraction took 1868.22ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 41.0MB in the beginning and 61.5MB in the end (delta: -20.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:23:34,245 INFO L158 Benchmark]: Witness Printer took 3.58ms. Allocated memory is still 113.2MB. Free memory was 61.5MB in the beginning and 60.7MB in the end (delta: 737.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 03:23:34,247 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70ms. Allocated memory is still 69.2MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 853.82ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 42.5MB in the beginning and 45.4MB in the end (delta: -2.9MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.81ms. Allocated memory is still 90.2MB. Free memory was 45.4MB in the beginning and 42.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.95ms. Allocated memory is still 90.2MB. Free memory was 42.0MB in the beginning and 37.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 655.39ms. Allocated memory is still 90.2MB. Free memory was 37.8MB in the beginning and 42.1MB in the end (delta: -4.3MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1868.22ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 41.0MB in the beginning and 61.5MB in the end (delta: -20.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.58ms. Allocated memory is still 113.2MB. Free memory was 61.5MB in the beginning and 60.7MB in the end (delta: 737.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1693. Possible FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, mutex={3:0}, pdev=1, t1=0] [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [\old(arg)={0:0}, mutex={3:0}, pdev=1, t1=-1] [L1714] 0 pdev = 2 VAL [\old(arg)={0:0}, arg={0:0}, mutex={3:0}, pdev=2, t1=-1] [L1702] 1 pdev = 6 VAL [\old(arg)={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1=-1] [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] CALL 0 reach_error() [L1693] COND FALSE 0 !(0) [L1693] 0 __assert_fail ("0", "race-1_2-join.c", 10, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1=-1] - UnprovableResult [Line: 1693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1733]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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: 1693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1712]: 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 3 procedures, 51 locations, 8 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: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 130 IncrementalHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 5 mSDtfsCounter, 130 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=0, 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, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 41 SizeOfPredicates, 2 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 10 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-17 03:23:34,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample