./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-lit/sssc12_variant-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/pthread-lit/sssc12_variant-2.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 7be74b3f1207f4387a275e1f4e0e57734d5f1b215282bd8d49efde8c6948d207 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:03:19,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:03:19,877 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:03:19,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:03:19,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:03:19,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:03:19,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:03:19,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:03:19,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:03:19,922 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:03:19,922 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:03:19,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:03:19,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:03:19,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:03:19,924 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:03:19,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:03:19,925 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:03:19,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:03:19,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:03:19,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:03:19,926 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:03:19,927 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:03:19,927 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:03:19,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:03:19,928 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:03:19,928 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:03:19,929 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:03:19,929 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:03:19,929 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:03:19,930 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:03:19,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:03:19,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:03:19,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:03:19,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:03:19,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:03:19,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:03:19,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:03:19,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:03:19,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:03:19,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:03:19,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:03:19,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:03:19,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be74b3f1207f4387a275e1f4e0e57734d5f1b215282bd8d49efde8c6948d207 [2024-11-10 18:03:20,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:03:20,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:03:20,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:03:20,231 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:03:20,231 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:03:20,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/sssc12_variant-2.i [2024-11-10 18:03:21,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:03:21,965 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:03:21,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/sssc12_variant-2.i [2024-11-10 18:03:21,993 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e18e3ce7e/17e3b386a71848abb6af3d169c58936b/FLAG0d3caa712 [2024-11-10 18:03:22,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e18e3ce7e/17e3b386a71848abb6af3d169c58936b [2024-11-10 18:03:22,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:03:22,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:03:22,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:03:22,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:03:22,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:03:22,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3d6711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22, skipping insertion in model container [2024-11-10 18:03:22,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,074 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:03:22,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:03:22,634 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:03:22,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:03:22,757 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:03:22,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22 WrapperNode [2024-11-10 18:03:22,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:03:22,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:03:22,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:03:22,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:03:22,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,815 INFO L138 Inliner]: procedures = 274, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 82 [2024-11-10 18:03:22,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:03:22,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:03:22,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:03:22,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:03:22,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,856 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-10 18:03:22,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,869 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:03:22,881 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:03:22,881 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:03:22,882 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:03:22,882 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (1/1) ... [2024-11-10 18:03:22,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:03:22,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:03:22,917 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) [2024-11-10 18:03:22,919 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 [2024-11-10 18:03:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 18:03:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2024-11-10 18:03:22,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2024-11-10 18:03:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 18:03:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:03:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:03:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:03:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:03:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:03:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:03:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:03:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:03:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:03:22,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:03:22,962 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:03:23,077 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:03:23,079 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:03:23,260 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:03:23,261 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:03:23,400 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:03:23,401 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:03:23,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:03:23 BoogieIcfgContainer [2024-11-10 18:03:23,402 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:03:23,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:03:23,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:03:23,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:03:23,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:03:22" (1/3) ... [2024-11-10 18:03:23,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444af1cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:03:23, skipping insertion in model container [2024-11-10 18:03:23,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:03:22" (2/3) ... [2024-11-10 18:03:23,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444af1cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:03:23, skipping insertion in model container [2024-11-10 18:03:23,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:03:23" (3/3) ... [2024-11-10 18:03:23,414 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12_variant-2.i [2024-11-10 18:03:23,432 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:03:23,432 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 18:03:23,432 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:03:23,488 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:03:23,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 38 transitions, 80 flow [2024-11-10 18:03:23,555 INFO L124 PetriNetUnfolderBase]: 6/45 cut-off events. [2024-11-10 18:03:23,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:03:23,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 45 events. 6/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 35. Up to 4 conditions per place. [2024-11-10 18:03:23,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 38 transitions, 80 flow [2024-11-10 18:03:23,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 38 transitions, 80 flow [2024-11-10 18:03:23,577 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:03:23,586 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;@20d30278, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:03:23,587 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-10 18:03:23,591 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:03:23,592 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:03:23,592 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:03:23,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:03:23,594 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:03:23,595 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-10 18:03:23,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:03:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash 7437287, now seen corresponding path program 1 times [2024-11-10 18:03:23,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:03:23,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26695239] [2024-11-10 18:03:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:03:23,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:03:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:03:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:03:23,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:03:23,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26695239] [2024-11-10 18:03:23,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26695239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:03:23,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:03:23,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:03:23,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212556909] [2024-11-10 18:03:23,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:03:23,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:03:23,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:03:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:03:23,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:03:23,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-11-10 18:03:23,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 80 flow. Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2024-11-10 18:03:23,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:03:23,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-11-10 18:03:23,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:03:23,961 INFO L124 PetriNetUnfolderBase]: 17/91 cut-off events. [2024-11-10 18:03:23,962 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:03:23,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 91 events. 17/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 306 event pairs, 14 based on Foata normal form. 18/91 useless extension candidates. Maximal degree in co-relation 126. Up to 44 conditions per place. [2024-11-10 18:03:23,966 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 12 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2024-11-10 18:03:23,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 86 flow [2024-11-10 18:03:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:03:23,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:03:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 53 transitions. [2024-11-10 18:03:23,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6973684210526315 [2024-11-10 18:03:23,983 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 80 flow. Second operand 2 states and 53 transitions. [2024-11-10 18:03:23,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 86 flow [2024-11-10 18:03:23,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:03:23,989 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 62 flow [2024-11-10 18:03:23,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-10 18:03:23,998 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2024-11-10 18:03:23,998 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 62 flow [2024-11-10 18:03:23,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2024-11-10 18:03:23,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:03:24,000 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 18:03:24,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:03:24,000 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-10 18:03:24,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:03:24,002 INFO L85 PathProgramCache]: Analyzing trace with hash 299448471, now seen corresponding path program 1 times [2024-11-10 18:03:24,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:03:24,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356363801] [2024-11-10 18:03:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:03:24,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:03:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:03:24,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:03:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:03:24,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:03:24,100 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:03:24,102 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-10 18:03:24,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 16 remaining) [2024-11-10 18:03:24,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2024-11-10 18:03:24,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2024-11-10 18:03:24,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2024-11-10 18:03:24,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2024-11-10 18:03:24,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2024-11-10 18:03:24,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2024-11-10 18:03:24,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 16 remaining) [2024-11-10 18:03:24,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2024-11-10 18:03:24,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2024-11-10 18:03:24,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2024-11-10 18:03:24,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 16 remaining) [2024-11-10 18:03:24,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 16 remaining) [2024-11-10 18:03:24,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2024-11-10 18:03:24,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2024-11-10 18:03:24,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:03:24,112 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 18:03:24,116 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:03:24,117 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 18:03:24,160 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:03:24,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 66 transitions, 142 flow [2024-11-10 18:03:24,188 INFO L124 PetriNetUnfolderBase]: 11/81 cut-off events. [2024-11-10 18:03:24,190 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:03:24,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 81 events. 11/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 201 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2024-11-10 18:03:24,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 66 transitions, 142 flow [2024-11-10 18:03:24,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 66 transitions, 142 flow [2024-11-10 18:03:24,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:03:24,199 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;@20d30278, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:03:24,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-10 18:03:24,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:03:24,203 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:03:24,203 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:03:24,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:03:24,204 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:03:24,205 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-10 18:03:24,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:03:24,206 INFO L85 PathProgramCache]: Analyzing trace with hash 9469031, now seen corresponding path program 1 times [2024-11-10 18:03:24,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:03:24,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576427824] [2024-11-10 18:03:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:03:24,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:03:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:03:24,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:03:24,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:03:24,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576427824] [2024-11-10 18:03:24,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576427824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:03:24,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:03:24,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:03:24,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056604270] [2024-11-10 18:03:24,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:03:24,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:03:24,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:03:24,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:03:24,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:03:24,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2024-11-10 18:03:24,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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) [2024-11-10 18:03:24,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:03:24,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2024-11-10 18:03:24,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:03:24,546 INFO L124 PetriNetUnfolderBase]: 417/1389 cut-off events. [2024-11-10 18:03:24,546 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-10 18:03:24,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 1389 events. 417/1389 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10146 event pairs, 330 based on Foata normal form. 277/1312 useless extension candidates. Maximal degree in co-relation 1376. Up to 663 conditions per place. [2024-11-10 18:03:24,565 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 21 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2024-11-10 18:03:24,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 158 flow [2024-11-10 18:03:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:03:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:03:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 95 transitions. [2024-11-10 18:03:24,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7196969696969697 [2024-11-10 18:03:24,569 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 142 flow. Second operand 2 states and 95 transitions. [2024-11-10 18:03:24,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 158 flow [2024-11-10 18:03:24,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 158 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:03:24,573 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 116 flow [2024-11-10 18:03:24,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-11-10 18:03:24,574 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2024-11-10 18:03:24,574 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 116 flow [2024-11-10 18:03:24,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 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) [2024-11-10 18:03:24,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:03:24,575 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 18:03:24,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:03:24,575 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-10 18:03:24,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:03:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1289885464, now seen corresponding path program 1 times [2024-11-10 18:03:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:03:24,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453434126] [2024-11-10 18:03:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:03:24,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:03:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:03:24,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:03:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:03:24,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:03:24,640 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:03:24,640 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-10 18:03:24,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (21 of 23 remaining) [2024-11-10 18:03:24,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2024-11-10 18:03:24,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2024-11-10 18:03:24,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2024-11-10 18:03:24,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2024-11-10 18:03:24,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2024-11-10 18:03:24,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2024-11-10 18:03:24,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 23 remaining) [2024-11-10 18:03:24,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 23 remaining) [2024-11-10 18:03:24,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 23 remaining) [2024-11-10 18:03:24,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 23 remaining) [2024-11-10 18:03:24,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining) [2024-11-10 18:03:24,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining) [2024-11-10 18:03:24,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 23 remaining) [2024-11-10 18:03:24,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 23 remaining) [2024-11-10 18:03:24,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining) [2024-11-10 18:03:24,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 23 remaining) [2024-11-10 18:03:24,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining) [2024-11-10 18:03:24,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining) [2024-11-10 18:03:24,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 23 remaining) [2024-11-10 18:03:24,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining) [2024-11-10 18:03:24,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 23 remaining) [2024-11-10 18:03:24,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:03:24,648 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 18:03:24,649 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:03:24,649 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 18:03:24,699 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:03:24,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 94 transitions, 206 flow [2024-11-10 18:03:24,718 INFO L124 PetriNetUnfolderBase]: 16/117 cut-off events. [2024-11-10 18:03:24,719 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 18:03:24,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 117 events. 16/117 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 348 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 89. Up to 8 conditions per place. [2024-11-10 18:03:24,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 94 transitions, 206 flow [2024-11-10 18:03:24,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 94 transitions, 206 flow [2024-11-10 18:03:24,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:03:24,725 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;@20d30278, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:03:24,726 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-10 18:03:24,727 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:03:24,727 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:03:24,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:03:24,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:03:24,728 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:03:24,728 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-10 18:03:24,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:03:24,728 INFO L85 PathProgramCache]: Analyzing trace with hash 12362727, now seen corresponding path program 1 times [2024-11-10 18:03:24,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:03:24,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546161152] [2024-11-10 18:03:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:03:24,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:03:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:03:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:03:24,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:03:24,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546161152] [2024-11-10 18:03:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546161152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:03:24,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:03:24,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:03:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437954494] [2024-11-10 18:03:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:03:24,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:03:24,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:03:24,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:03:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:03:24,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2024-11-10 18:03:24,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 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) [2024-11-10 18:03:24,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:03:24,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2024-11-10 18:03:24,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:03:26,778 INFO L124 PetriNetUnfolderBase]: 6331/17132 cut-off events. [2024-11-10 18:03:26,779 INFO L125 PetriNetUnfolderBase]: For 532/532 co-relation queries the response was YES. [2024-11-10 18:03:26,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26029 conditions, 17132 events. 6331/17132 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 188293 event pairs, 4975 based on Foata normal form. 3538/16206 useless extension candidates. Maximal degree in co-relation 6485. Up to 8575 conditions per place. [2024-11-10 18:03:27,013 INFO L140 encePairwiseOnDemand]: 83/94 looper letters, 30 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2024-11-10 18:03:27,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 232 flow [2024-11-10 18:03:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:03:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:03:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 137 transitions. [2024-11-10 18:03:27,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7287234042553191 [2024-11-10 18:03:27,020 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 206 flow. Second operand 2 states and 137 transitions. [2024-11-10 18:03:27,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 232 flow [2024-11-10 18:03:27,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 230 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 18:03:27,025 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 170 flow [2024-11-10 18:03:27,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=170, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2024-11-10 18:03:27,027 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, -6 predicate places. [2024-11-10 18:03:27,028 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 170 flow [2024-11-10 18:03:27,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 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) [2024-11-10 18:03:27,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:03:27,029 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:03:27,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:03:27,029 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-10 18:03:27,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:03:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1409130475, now seen corresponding path program 1 times [2024-11-10 18:03:27,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:03:27,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395166956] [2024-11-10 18:03:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:03:27,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:03:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:03:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:03:27,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:03:27,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395166956] [2024-11-10 18:03:27,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395166956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:03:27,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:03:27,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:03:27,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438427809] [2024-11-10 18:03:27,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:03:27,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:03:27,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:03:27,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:03:27,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:03:27,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 94 [2024-11-10 18:03:27,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-11-10 18:03:27,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:03:27,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 94 [2024-11-10 18:03:27,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:03:29,333 INFO L124 PetriNetUnfolderBase]: 11543/22008 cut-off events. [2024-11-10 18:03:29,334 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2024-11-10 18:03:29,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38040 conditions, 22008 events. 11543/22008 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 195845 event pairs, 9548 based on Foata normal form. 0/20807 useless extension candidates. Maximal degree in co-relation 38034. Up to 15655 conditions per place. [2024-11-10 18:03:29,534 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 35 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2024-11-10 18:03:29,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 224 flow [2024-11-10 18:03:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:03:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:03:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-11-10 18:03:29,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-11-10 18:03:29,537 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 170 flow. Second operand 3 states and 144 transitions. [2024-11-10 18:03:29,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 68 transitions, 224 flow [2024-11-10 18:03:29,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:03:29,543 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 154 flow [2024-11-10 18:03:29,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-11-10 18:03:29,545 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, -13 predicate places. [2024-11-10 18:03:29,546 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 154 flow [2024-11-10 18:03:29,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-11-10 18:03:29,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:03:29,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:03:29,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:03:29,546 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-10 18:03:29,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:03:29,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1409130474, now seen corresponding path program 1 times [2024-11-10 18:03:29,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:03:29,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284671215] [2024-11-10 18:03:29,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:03:29,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:03:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:03:29,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:03:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:03:29,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:03:29,588 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:03:29,588 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thrErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 30 remaining) [2024-11-10 18:03:29,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (28 of 30 remaining) [2024-11-10 18:03:29,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 30 remaining) [2024-11-10 18:03:29,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 30 remaining) [2024-11-10 18:03:29,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 30 remaining) [2024-11-10 18:03:29,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 30 remaining) [2024-11-10 18:03:29,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 30 remaining) [2024-11-10 18:03:29,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 30 remaining) [2024-11-10 18:03:29,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 30 remaining) [2024-11-10 18:03:29,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (20 of 30 remaining) [2024-11-10 18:03:29,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 30 remaining) [2024-11-10 18:03:29,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 30 remaining) [2024-11-10 18:03:29,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 30 remaining) [2024-11-10 18:03:29,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 30 remaining) [2024-11-10 18:03:29,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 30 remaining) [2024-11-10 18:03:29,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 30 remaining) [2024-11-10 18:03:29,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 30 remaining) [2024-11-10 18:03:29,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 30 remaining) [2024-11-10 18:03:29,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 30 remaining) [2024-11-10 18:03:29,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 30 remaining) [2024-11-10 18:03:29,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 30 remaining) [2024-11-10 18:03:29,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 30 remaining) [2024-11-10 18:03:29,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 30 remaining) [2024-11-10 18:03:29,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 30 remaining) [2024-11-10 18:03:29,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 30 remaining) [2024-11-10 18:03:29,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 30 remaining) [2024-11-10 18:03:29,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 30 remaining) [2024-11-10 18:03:29,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 30 remaining) [2024-11-10 18:03:29,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 30 remaining) [2024-11-10 18:03:29,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 30 remaining) [2024-11-10 18:03:29,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 18:03:29,596 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 18:03:29,641 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2024-11-10 18:03:29,641 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 18:03:29,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:03:29 BasicIcfg [2024-11-10 18:03:29,651 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 18:03:29,652 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 18:03:29,652 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 18:03:29,653 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 18:03:29,653 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:03:23" (3/4) ... [2024-11-10 18:03:29,655 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-10 18:03:29,863 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 18:03:29,864 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 18:03:29,864 INFO L158 Benchmark]: Toolchain (without parser) took 7851.55ms. Allocated memory was 178.3MB in the beginning and 809.5MB in the end (delta: 631.2MB). Free memory was 104.4MB in the beginning and 567.3MB in the end (delta: -462.9MB). Peak memory consumption was 463.8MB. Max. memory is 16.1GB. [2024-11-10 18:03:29,864 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 178.3MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:03:29,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 744.36ms. Allocated memory is still 178.3MB. Free memory was 104.1MB in the beginning and 135.1MB in the end (delta: -31.0MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2024-11-10 18:03:29,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.68ms. Allocated memory is still 178.3MB. Free memory was 135.1MB in the beginning and 132.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:03:29,865 INFO L158 Benchmark]: Boogie Preprocessor took 62.62ms. Allocated memory is still 178.3MB. Free memory was 132.0MB in the beginning and 129.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:03:29,865 INFO L158 Benchmark]: IcfgBuilder took 520.64ms. Allocated memory is still 178.3MB. Free memory was 129.9MB in the beginning and 101.6MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-10 18:03:29,865 INFO L158 Benchmark]: TraceAbstraction took 6247.56ms. Allocated memory was 178.3MB in the beginning and 809.5MB in the end (delta: 631.2MB). Free memory was 101.6MB in the beginning and 316.7MB in the end (delta: -215.1MB). Peak memory consumption was 416.1MB. Max. memory is 16.1GB. [2024-11-10 18:03:29,866 INFO L158 Benchmark]: Witness Printer took 211.51ms. Allocated memory is still 809.5MB. Free memory was 316.7MB in the beginning and 567.3MB in the end (delta: -250.6MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2024-11-10 18:03:29,868 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 178.3MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 744.36ms. Allocated memory is still 178.3MB. Free memory was 104.1MB in the beginning and 135.1MB in the end (delta: -31.0MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.68ms. Allocated memory is still 178.3MB. Free memory was 135.1MB in the beginning and 132.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.62ms. Allocated memory is still 178.3MB. Free memory was 132.0MB in the beginning and 129.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 520.64ms. Allocated memory is still 178.3MB. Free memory was 129.9MB in the beginning and 101.6MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6247.56ms. Allocated memory was 178.3MB in the beginning and 809.5MB in the end (delta: 631.2MB). Free memory was 101.6MB in the beginning and 316.7MB in the end (delta: -215.1MB). Peak memory consumption was 416.1MB. Max. memory is 16.1GB. * Witness Printer took 211.51ms. Allocated memory is still 809.5MB. Free memory was 316.7MB in the beginning and 567.3MB in the end (delta: -250.6MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1005] 0 int *data; [L1006] 0 volatile int len; [L1007] 0 volatile int next; [L1008] 0 volatile int lock; [L1040] 0 pthread_t t; [L1041] 0 lock=0 [L1042] 0 next = 0 [L1043] 0 len = __VERIFIER_nondet_int() [L1044] CALL 0 assume_abort_if_not(len > 0) [L994] COND FALSE 0 !(!cond) [L1044] RET 0 assume_abort_if_not(len > 0) [L1045] 0 data = malloc(sizeof(int) * len) [L1046] COND TRUE 0 1 [L1047] FCALL, FORK 0 pthread_create(&t, 0, thr, 0) VAL [\old(argc)=1073741825, \old(argv)={1073741826:1073741827}, argc=1073741825, data={-2:0}, len=1073741824, lock=0, next=0, t=-1] [L1022] 1 int c, end; [L1023] 1 c = 0 [L1024] 1 end = 0 [L1025] CALL 1 acquire() [L1011] CALL 1 assume_abort_if_not(lock == 0) [L994] COND FALSE 1 !(!cond) [L1011] RET 1 assume_abort_if_not(lock == 0) [L1012] 1 lock = 1 VAL [data={-2:0}, len=1073741824, lock=1, next=0] [L1025] RET 1 acquire() [L1026] COND TRUE 1 next + 10 <= len [L1027] 1 c = next [L1028] EXPR 1 end = next + 10 [L1028] 1 next = end = next + 10 [L1030] CALL 1 release() [L1017] CALL 1 assume_abort_if_not(lock == 1) [L994] COND FALSE 1 !(!cond) [L1017] RET 1 assume_abort_if_not(lock == 1) [L1018] 1 lock = 0 VAL [data={-2:0}, len=1073741824, lock=0, next=10] [L1030] RET 1 release() [L1031] COND TRUE 1 c < end VAL [\old(arg)={0:0}, arg={0:0}, c=0, data={-2:0}, end=10, len=1073741824, lock=0, next=10] [L1032] 1 data[c] = 0 - UnprovableResult [Line: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 58 locations, 16 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: 0.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 82 locations, 23 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: 0.5s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 106 locations, 30 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: 4.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 0 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be incorrect! [2024-11-10 18:03:29,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)