./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../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 8be7027f 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/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.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:17:50,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:17:50,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:17:50,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:17:50,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:17:50,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:17:50,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:17:50,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:17:50,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:17:50,970 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:17:50,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:17:50,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:17:50,971 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:17:50,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:17:50,972 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:17:50,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:17:50,972 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:17:50,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:17:50,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:17:50,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:17:50,973 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:17:50,976 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:17:50,976 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:17:50,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:17:50,978 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:17:50,978 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:17:50,979 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:17:50,979 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:17:50,979 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:17:50,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:17:50,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:17:50,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:17:50,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:17:50,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:17:50,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:17:50,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:17:50,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:17:50,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:17:50,981 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:17:50,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:17:50,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:17:50,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:17:50,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2024-11-12 16:17:51,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:17:51,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:17:51,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:17:51,236 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:17:51,237 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:17:51,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2024-11-12 16:17:52,513 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:17:52,736 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:17:52,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2024-11-12 16:17:52,752 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d98c39e/0519aae6be544e89a4c0060e1c51bec7/FLAGc87356cb6 [2024-11-12 16:17:52,766 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d98c39e/0519aae6be544e89a4c0060e1c51bec7 [2024-11-12 16:17:52,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:17:52,770 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:17:52,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:17:52,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:17:52,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:17:52,778 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:17:52" (1/1) ... [2024-11-12 16:17:52,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382e170c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:52, skipping insertion in model container [2024-11-12 16:17:52,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:17:52" (1/1) ... [2024-11-12 16:17:52,824 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:17:53,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:17:53,209 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:17:53,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:17:53,320 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:17:53,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53 WrapperNode [2024-11-12 16:17:53,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:17:53,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:17:53,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:17:53,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:17:53,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,344 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,376 INFO L138 Inliner]: procedures = 173, calls = 42, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 274 [2024-11-12 16:17:53,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:17:53,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:17:53,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:17:53,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:17:53,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,420 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]. [2024-11-12 16:17:53,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:17:53,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:17:53,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:17:53,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:17:53,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (1/1) ... [2024-11-12 16:17:53,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:17:53,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:17:53,484 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) [2024-11-12 16:17:53,487 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 [2024-11-12 16:17:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 16:17:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 16:17:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 16:17:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 16:17:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-12 16:17:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-12 16:17:53,527 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-12 16:17:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 16:17:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 16:17:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 16:17:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 16:17:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-12 16:17:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 16:17:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:17:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 16:17:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-12 16:17:53,528 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-12 16:17:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 16:17:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:17:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 16:17:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 16:17:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 16:17:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-12 16:17:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 16:17:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:17:53,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:17:53,532 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:17:53,663 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:17:53,665 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:17:54,005 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:17:54,005 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:17:54,330 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:17:54,331 INFO L316 CfgBuilder]: Removed 24 assume(true) statements. [2024-11-12 16:17:54,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:17:54 BoogieIcfgContainer [2024-11-12 16:17:54,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:17:54,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:17:54,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:17:54,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:17:54,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:17:52" (1/3) ... [2024-11-12 16:17:54,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c913e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:17:54, skipping insertion in model container [2024-11-12 16:17:54,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:17:53" (2/3) ... [2024-11-12 16:17:54,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c913e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:17:54, skipping insertion in model container [2024-11-12 16:17:54,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:17:54" (3/3) ... [2024-11-12 16:17:54,338 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2024-11-12 16:17:54,351 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:17:54,352 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-11-12 16:17:54,352 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:17:54,403 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-12 16:17:54,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 123 transitions, 266 flow [2024-11-12 16:17:54,551 INFO L124 PetriNetUnfolderBase]: 47/234 cut-off events. [2024-11-12 16:17:54,555 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-12 16:17:54,566 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 21. Compared 1246 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. [2024-11-12 16:17:54,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 123 transitions, 266 flow [2024-11-12 16:17:54,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 123 transitions, 266 flow [2024-11-12 16:17:54,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:17:54,587 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;@393f982a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:17:54,587 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-12 16:17:54,590 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:17:54,591 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-12 16:17:54,591 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:17:54,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:17:54,592 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:17:54,592 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)] === [2024-11-12 16:17:54,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:17:54,597 INFO L85 PathProgramCache]: Analyzing trace with hash 704042, now seen corresponding path program 1 times [2024-11-12 16:17:54,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:17:54,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845113891] [2024-11-12 16:17:54,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:17:54,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:17:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:17:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:17:54,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:17:54,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845113891] [2024-11-12 16:17:54,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845113891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:17:54,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:17:54,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:17:54,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056584063] [2024-11-12 16:17:54,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:17:54,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:17:54,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:17:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:17:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:17:54,976 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 123 [2024-11-12 16:17:54,979 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) [2024-11-12 16:17:54,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:17:54,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 123 [2024-11-12 16:17:54,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:17:56,026 INFO L124 PetriNetUnfolderBase]: 5855/11699 cut-off events. [2024-11-12 16:17:56,027 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-12 16:17:56,047 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 97021 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. [2024-11-12 16:17:56,098 INFO L140 encePairwiseOnDemand]: 95/123 looper letters, 90 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2024-11-12 16:17:56,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 131 transitions, 466 flow [2024-11-12 16:17:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:17:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:17:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-11-12 16:17:56,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7018970189701897 [2024-11-12 16:17:56,110 INFO L175 Difference]: Start difference. First operand has 98 places, 123 transitions, 266 flow. Second operand 3 states and 259 transitions. [2024-11-12 16:17:56,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 131 transitions, 466 flow [2024-11-12 16:17:56,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:17:56,122 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 214 flow [2024-11-12 16:17:56,124 INFO L262 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} [2024-11-12 16:17:56,131 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -2 predicate places. [2024-11-12 16:17:56,131 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 214 flow [2024-11-12 16:17:56,131 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) [2024-11-12 16:17:56,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:17:56,131 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:17:56,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:17:56,132 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)] === [2024-11-12 16:17:56,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:17:56,132 INFO L85 PathProgramCache]: Analyzing trace with hash 704043, now seen corresponding path program 1 times [2024-11-12 16:17:56,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:17:56,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929750471] [2024-11-12 16:17:56,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:17:56,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:17:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:17:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:17:56,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:17:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929750471] [2024-11-12 16:17:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929750471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:17:56,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:17:56,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:17:56,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690110895] [2024-11-12 16:17:56,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:17:56,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:17:56,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:17:56,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:17:56,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:17:56,299 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 123 [2024-11-12 16:17:56,299 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) [2024-11-12 16:17:56,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:17:56,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 123 [2024-11-12 16:17:56,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:17:57,084 INFO L124 PetriNetUnfolderBase]: 4948/10321 cut-off events. [2024-11-12 16:17:57,084 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-11-12 16:17:57,104 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 86223 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. [2024-11-12 16:17:57,150 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 72 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-11-12 16:17:57,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 114 transitions, 400 flow [2024-11-12 16:17:57,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:17:57,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:17:57,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2024-11-12 16:17:57,153 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474254742547425 [2024-11-12 16:17:57,153 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 214 flow. Second operand 3 states and 202 transitions. [2024-11-12 16:17:57,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 114 transitions, 400 flow [2024-11-12 16:17:57,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 114 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:17:57,167 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 220 flow [2024-11-12 16:17:57,168 INFO L262 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} [2024-11-12 16:17:57,169 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -1 predicate places. [2024-11-12 16:17:57,170 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 220 flow [2024-11-12 16:17:57,170 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) [2024-11-12 16:17:57,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:17:57,172 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-12 16:17:57,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:17:57,173 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)] === [2024-11-12 16:17:57,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:17:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1682445844, now seen corresponding path program 1 times [2024-11-12 16:17:57,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:17:57,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477228287] [2024-11-12 16:17:57,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:17:57,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:17:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:17:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:17:57,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:17:57,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477228287] [2024-11-12 16:17:57,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477228287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:17:57,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:17:57,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:17:57,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719117986] [2024-11-12 16:17:57,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:17:57,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:17:57,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:17:57,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:17:57,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:17:57,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 123 [2024-11-12 16:17:57,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 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) [2024-11-12 16:17:57,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:17:57,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 123 [2024-11-12 16:17:57,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:17:57,492 INFO L124 PetriNetUnfolderBase]: 58/185 cut-off events. [2024-11-12 16:17:57,492 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-12 16:17:57,493 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. [2024-11-12 16:17:57,494 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 41 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-12 16:17:57,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 210 flow [2024-11-12 16:17:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:17:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:17:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-12 16:17:57,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4247967479674797 [2024-11-12 16:17:57,498 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 220 flow. Second operand 4 states and 209 transitions. [2024-11-12 16:17:57,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 210 flow [2024-11-12 16:17:57,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 204 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 16:17:57,500 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 82 flow [2024-11-12 16:17:57,500 INFO L262 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} [2024-11-12 16:17:57,501 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -55 predicate places. [2024-11-12 16:17:57,501 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 82 flow [2024-11-12 16:17:57,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 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) [2024-11-12 16:17:57,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:17:57,502 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-12 16:17:57,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 16:17:57,502 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-12 16:17:57,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:17:57,503 INFO L85 PathProgramCache]: Analyzing trace with hash 616214394, now seen corresponding path program 1 times [2024-11-12 16:17:57,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:17:57,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660889426] [2024-11-12 16:17:57,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:17:57,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:17:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:17:57,543 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 16:17:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:17:57,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 16:17:57,596 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 16:17:57,597 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-12 16:17:57,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-11-12 16:17:57,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2024-11-12 16:17:57,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2024-11-12 16:17:57,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-12 16:17:57,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-12 16:17:57,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2024-11-12 16:17:57,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-12 16:17:57,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-12 16:17:57,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2024-11-12 16:17:57,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2024-11-12 16:17:57,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2024-11-12 16:17:57,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-11-12 16:17:57,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2024-11-12 16:17:57,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2024-11-12 16:17:57,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 16:17:57,605 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-12 16:17:57,609 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 16:17:57,609 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 16:17:57,669 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-12 16:17:57,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 217 transitions, 478 flow [2024-11-12 16:17:57,758 INFO L124 PetriNetUnfolderBase]: 161/719 cut-off events. [2024-11-12 16:17:57,759 INFO L125 PetriNetUnfolderBase]: For 72/79 co-relation queries the response was YES. [2024-11-12 16:17:57,768 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 44. Compared 4825 event pairs, 1 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 445. Up to 32 conditions per place. [2024-11-12 16:17:57,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 217 transitions, 478 flow [2024-11-12 16:17:57,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 217 transitions, 478 flow [2024-11-12 16:17:57,784 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:17:57,785 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;@393f982a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:17:57,785 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-12 16:17:57,790 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:17:57,790 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-12 16:17:57,790 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:17:57,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:17:57,791 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:17:57,791 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)] === [2024-11-12 16:17:57,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:17:57,791 INFO L85 PathProgramCache]: Analyzing trace with hash 917537, now seen corresponding path program 1 times [2024-11-12 16:17:57,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:17:57,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59033554] [2024-11-12 16:17:57,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:17:57,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:17:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:17:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:17:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:17:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59033554] [2024-11-12 16:17:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59033554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:17:57,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:17:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:17:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774006762] [2024-11-12 16:17:57,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:17:57,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:17:57,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:17:57,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:17:57,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:17:57,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 217 [2024-11-12 16:17:57,894 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) [2024-11-12 16:17:57,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:17:57,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 217 [2024-11-12 16:17:57,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand