./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:43:23,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:43:24,058 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:43:24,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:43:24,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:43:24,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:43:24,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:43:24,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:43:24,082 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:43:24,082 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:43:24,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:43:24,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:43:24,085 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:43:24,086 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:43:24,086 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:43:24,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:43:24,087 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:43:24,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:43:24,087 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:43:24,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:43:24,091 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:43:24,091 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:43:24,091 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:43:24,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:43:24,092 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:43:24,092 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:43:24,092 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:43:24,092 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:43:24,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:43:24,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:43:24,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:43:24,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:43:24,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:43:24,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:43:24,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:43:24,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:43:24,093 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:43:24,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:43:24,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:43:24,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:43:24,094 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:43:24,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:43:24,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2024-10-14 19:43:24,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:43:24,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:43:24,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:43:24,321 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:43:24,321 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:43:24,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2024-10-14 19:43:25,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:43:26,007 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:43:26,008 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2024-10-14 19:43:26,023 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce58a71d/e94d7614333c4e96a4f8dcff182db24d/FLAG0823aa488 [2024-10-14 19:43:26,035 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bce58a71d/e94d7614333c4e96a4f8dcff182db24d [2024-10-14 19:43:26,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:43:26,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:43:26,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:43:26,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:43:26,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:43:26,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe04ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26, skipping insertion in model container [2024-10-14 19:43:26,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:43:26,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:43:26,384 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:43:26,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:43:26,475 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:43:26,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26 WrapperNode [2024-10-14 19:43:26,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:43:26,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:43:26,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:43:26,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:43:26,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,528 INFO L138 Inliner]: procedures = 173, calls = 42, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 227 [2024-10-14 19:43:26,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:43:26,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:43:26,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:43:26,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:43:26,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,546 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,566 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 5, 2, 5, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 0, 5, 0]. The 2 writes are split as follows [0, 0, 1, 0, 1]. [2024-10-14 19:43:26,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,569 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:43:26,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:43:26,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:43:26,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:43:26,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (1/1) ... [2024-10-14 19:43:26,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:43:26,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:43:26,623 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) [2024-10-14 19:43:26,651 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 [2024-10-14 19:43:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 19:43:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 19:43:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 19:43:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 19:43:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 19:43:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-10-14 19:43:26,725 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-10-14 19:43:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 19:43:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 19:43:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 19:43:26,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 19:43:26,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 19:43:26,729 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 19:43:26,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:43:26,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 19:43:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-10-14 19:43:26,730 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-10-14 19:43:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 19:43:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:43:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 19:43:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 19:43:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 19:43:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 19:43:26,730 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 19:43:26,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:43:26,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:43:26,734 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:43:26,849 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:43:26,851 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:43:27,111 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:43:27,111 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:43:27,238 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:43:27,240 INFO L314 CfgBuilder]: Removed 24 assume(true) statements. [2024-10-14 19:43:27,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:43:27 BoogieIcfgContainer [2024-10-14 19:43:27,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:43:27,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:43:27,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:43:27,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:43:27,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:43:26" (1/3) ... [2024-10-14 19:43:27,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cef0aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:43:27, skipping insertion in model container [2024-10-14 19:43:27,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:43:26" (2/3) ... [2024-10-14 19:43:27,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cef0aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:43:27, skipping insertion in model container [2024-10-14 19:43:27,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:43:27" (3/3) ... [2024-10-14 19:43:27,248 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2024-10-14 19:43:27,265 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:43:27,266 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-10-14 19:43:27,266 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:43:27,313 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-14 19:43:27,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 123 transitions, 266 flow [2024-10-14 19:43:27,397 INFO L124 PetriNetUnfolderBase]: 47/234 cut-off events. [2024-10-14 19:43:27,398 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-14 19:43:27,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 234 events. 47/234 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1235 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 139. Up to 8 conditions per place. [2024-10-14 19:43:27,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 123 transitions, 266 flow [2024-10-14 19:43:27,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 123 transitions, 266 flow [2024-10-14 19:43:27,421 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:43:27,426 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;@7b20f837, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:43:27,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-14 19:43:27,428 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:43:27,428 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:43:27,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:43:27,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:43:27,429 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:43:27,429 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-10-14 19:43:27,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:43:27,433 INFO L85 PathProgramCache]: Analyzing trace with hash 610700, now seen corresponding path program 1 times [2024-10-14 19:43:27,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:43:27,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180151360] [2024-10-14 19:43:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:43:27,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:43:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:43:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:43:27,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:43:27,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180151360] [2024-10-14 19:43:27,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180151360] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:43:27,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:43:27,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:43:27,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979696899] [2024-10-14 19:43:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:43:27,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:43:27,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:43:27,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:43:27,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:43:27,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 123 [2024-10-14 19:43:27,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 123 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-10-14 19:43:27,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:43:27,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 123 [2024-10-14 19:43:27,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:43:28,913 INFO L124 PetriNetUnfolderBase]: 5855/11699 cut-off events. [2024-10-14 19:43:28,914 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-10-14 19:43:28,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20834 conditions, 11699 events. 5855/11699 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 97084 event pairs, 4068 based on Foata normal form. 2515/13221 useless extension candidates. Maximal degree in co-relation 19836. Up to 6749 conditions per place. [2024-10-14 19:43:28,988 INFO L140 encePairwiseOnDemand]: 95/123 looper letters, 90 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2024-10-14 19:43:28,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 131 transitions, 466 flow [2024-10-14 19:43:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:43:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:43:28,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-10-14 19:43:28,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7018970189701897 [2024-10-14 19:43:29,000 INFO L175 Difference]: Start difference. First operand has 98 places, 123 transitions, 266 flow. Second operand 3 states and 259 transitions. [2024-10-14 19:43:29,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 131 transitions, 466 flow [2024-10-14 19:43:29,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:43:29,013 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 214 flow [2024-10-14 19:43:29,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=96, PETRI_TRANSITIONS=95} [2024-10-14 19:43:29,017 INFO L277 CegarLoopForPetriNet]: 98 programPoint places, -2 predicate places. [2024-10-14 19:43:29,018 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 214 flow [2024-10-14 19:43:29,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-10-14 19:43:29,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:43:29,019 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:43:29,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:43:29,019 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-10-14 19:43:29,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:43:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash 610701, now seen corresponding path program 1 times [2024-10-14 19:43:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:43:29,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379553825] [2024-10-14 19:43:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:43:29,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:43:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:43:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:43:29,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:43:29,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379553825] [2024-10-14 19:43:29,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379553825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:43:29,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:43:29,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:43:29,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840669635] [2024-10-14 19:43:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:43:29,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:43:29,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:43:29,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:43:29,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:43:29,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 123 [2024-10-14 19:43:29,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2024-10-14 19:43:29,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:43:29,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 123 [2024-10-14 19:43:29,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:43:29,833 INFO L124 PetriNetUnfolderBase]: 4948/10321 cut-off events. [2024-10-14 19:43:29,834 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-10-14 19:43:29,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18536 conditions, 10321 events. 4948/10321 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 86379 event pairs, 2160 based on Foata normal form. 1/9280 useless extension candidates. Maximal degree in co-relation 17754. Up to 7669 conditions per place. [2024-10-14 19:43:29,884 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 72 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-10-14 19:43:29,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 114 transitions, 400 flow [2024-10-14 19:43:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:43:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:43:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2024-10-14 19:43:29,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5474254742547425 [2024-10-14 19:43:29,888 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 214 flow. Second operand 3 states and 202 transitions. [2024-10-14 19:43:29,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 114 transitions, 400 flow [2024-10-14 19:43:29,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 114 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:43:29,902 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 220 flow [2024-10-14 19:43:29,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2024-10-14 19:43:29,903 INFO L277 CegarLoopForPetriNet]: 98 programPoint places, -1 predicate places. [2024-10-14 19:43:29,903 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 220 flow [2024-10-14 19:43:29,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2024-10-14 19:43:29,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:43:29,904 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-14 19:43:29,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:43:29,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-10-14 19:43:29,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:43:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1375660468, now seen corresponding path program 1 times [2024-10-14 19:43:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:43:29,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960186834] [2024-10-14 19:43:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:43:29,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:43:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:43:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:43:30,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:43:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960186834] [2024-10-14 19:43:30,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960186834] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:43:30,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439052661] [2024-10-14 19:43:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:43:30,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:43:30,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:43:30,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:43:30,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 19:43:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:43:30,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:43:30,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:43:30,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-14 19:43:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:43:30,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:43:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:43:30,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439052661] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:43:30,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:43:30,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-10-14 19:43:30,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557946842] [2024-10-14 19:43:30,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:43:30,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 19:43:30,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:43:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 19:43:30,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-14 19:43:30,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 123 [2024-10-14 19:43:30,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 220 flow. Second operand has 9 states, 9 states have (on average 43.333333333333336) internal successors, (390), 9 states have internal predecessors, (390), 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) [2024-10-14 19:43:30,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:43:30,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 123 [2024-10-14 19:43:30,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:43:30,567 INFO L124 PetriNetUnfolderBase]: 58/185 cut-off events. [2024-10-14 19:43:30,567 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-14 19:43:30,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 185 events. 58/185 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 670 event pairs, 32 based on Foata normal form. 38/219 useless extension candidates. Maximal degree in co-relation 359. Up to 111 conditions per place. [2024-10-14 19:43:30,569 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 41 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-10-14 19:43:30,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 210 flow [2024-10-14 19:43:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:43:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:43:30,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-10-14 19:43:30,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4247967479674797 [2024-10-14 19:43:30,571 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 220 flow. Second operand 4 states and 209 transitions. [2024-10-14 19:43:30,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 210 flow [2024-10-14 19:43:30,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 204 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:43:30,572 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 82 flow [2024-10-14 19:43:30,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-10-14 19:43:30,573 INFO L277 CegarLoopForPetriNet]: 98 programPoint places, -55 predicate places. [2024-10-14 19:43:30,573 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 82 flow [2024-10-14 19:43:30,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 43.333333333333336) internal successors, (390), 9 states have internal predecessors, (390), 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) [2024-10-14 19:43:30,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:43:30,574 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-10-14 19:43:30,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 19:43:30,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:43:30,780 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-10-14 19:43:30,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:43:30,780 INFO L85 PathProgramCache]: Analyzing trace with hash -304197762, now seen corresponding path program 1 times [2024-10-14 19:43:30,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:43:30,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996593748] [2024-10-14 19:43:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:43:30,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:43:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:43:30,800 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:43:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:43:30,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:43:30,824 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:43:30,825 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-14 19:43:30,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-10-14 19:43:30,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2024-10-14 19:43:30,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2024-10-14 19:43:30,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-10-14 19:43:30,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-10-14 19:43:30,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2024-10-14 19:43:30,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-10-14 19:43:30,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-10-14 19:43:30,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2024-10-14 19:43:30,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2024-10-14 19:43:30,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2024-10-14 19:43:30,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-10-14 19:43:30,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2024-10-14 19:43:30,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2024-10-14 19:43:30,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:43:30,830 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-14 19:43:30,832 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:43:30,832 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 19:43:30,874 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-10-14 19:43:30,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 217 transitions, 478 flow [2024-10-14 19:43:30,960 INFO L124 PetriNetUnfolderBase]: 161/719 cut-off events. [2024-10-14 19:43:30,960 INFO L125 PetriNetUnfolderBase]: For 72/79 co-relation queries the response was YES. [2024-10-14 19:43:30,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 719 events. 161/719 cut-off events. For 72/79 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4851 event pairs, 1 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 446. Up to 32 conditions per place. [2024-10-14 19:43:30,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 217 transitions, 478 flow [2024-10-14 19:43:30,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 217 transitions, 478 flow [2024-10-14 19:43:30,979 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:43:30,980 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;@7b20f837, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:43:30,980 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-14 19:43:30,982 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:43:30,982 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:43:30,982 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:43:30,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:43:30,982 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:43:30,983 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-10-14 19:43:30,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:43:30,983 INFO L85 PathProgramCache]: Analyzing trace with hash 824195, now seen corresponding path program 1 times [2024-10-14 19:43:30,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:43:30,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431306541] [2024-10-14 19:43:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:43:30,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:43:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:43:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:43:31,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:43:31,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431306541] [2024-10-14 19:43:31,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431306541] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:43:31,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:43:31,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:43:31,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712049042] [2024-10-14 19:43:31,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:43:31,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:43:31,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:43:31,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:43:31,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:43:31,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 217 [2024-10-14 19:43:31,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 217 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2024-10-14 19:43:31,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:43:31,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 217 [2024-10-14 19:43:31,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand