./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:01:33,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:01:33,822 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:01:33,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:01:33,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:01:33,852 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:01:33,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:01:33,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:01:33,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:01:33,857 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:01:33,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:01:33,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:01:33,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:01:33,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:01:33,859 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:01:33,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:01:33,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:01:33,859 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:01:33,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:01:33,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:01:33,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:01:33,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:01:33,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:01:33,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:01:33,861 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:01:33,861 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:01:33,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:01:33,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:01:33,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:01:33,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:01:33,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:01:33,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:01:33,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:01:33,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:01:33,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:01:33,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:01:33,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:01:33,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:01:33,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:01:33,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:01:33,865 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:01:33,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:01:33,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:01:33,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:01:34,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:01:34,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:01:34,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:01:34,166 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:01:34,166 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:01:34,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i [2024-02-19 14:01:35,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:01:35,491 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:01:35,497 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i [2024-02-19 14:01:35,517 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e2ff1985/1f2dd34c3efe480d814f6a7c87840602/FLAG9fdace58d [2024-02-19 14:01:35,806 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e2ff1985/1f2dd34c3efe480d814f6a7c87840602 [2024-02-19 14:01:35,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:01:35,809 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:01:35,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:01:35,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:01:35,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:01:35,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:01:35" (1/1) ... [2024-02-19 14:01:35,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49572772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:35, skipping insertion in model container [2024-02-19 14:01:35,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:01:35" (1/1) ... [2024-02-19 14:01:35,868 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:01:36,219 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i[55568,55581] [2024-02-19 14:01:36,248 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:01:36,256 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:01:36,287 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i[55568,55581] [2024-02-19 14:01:36,297 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:01:36,351 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:01:36,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36 WrapperNode [2024-02-19 14:01:36,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:01:36,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:01:36,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:01:36,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:01:36,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,398 INFO L138 Inliner]: procedures = 324, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2024-02-19 14:01:36,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:01:36,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:01:36,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:01:36,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:01:36,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,445 INFO L175 MemorySlicer]: Split 18 memory accesses to 8 slices as follows [2, 4, 2, 2, 2, 2, 2, 2]. 22 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 1]. [2024-02-19 14:01:36,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:01:36,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:01:36,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:01:36,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:01:36,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:01:36,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:36,515 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) [2024-02-19 14:01:36,541 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 [2024-02-19 14:01:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 14:01:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:01:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:01:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 14:01:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:01:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:01:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:01:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:01:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:01:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-19 14:01:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-02-19 14:01:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-02-19 14:01:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2024-02-19 14:01:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2024-02-19 14:01:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:01:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:01:36,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:01:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:01:36,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:01:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:01:36,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:01:36,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:01:36,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:01:36,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:01:36,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:01:36,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-19 14:01:36,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-02-19 14:01:36,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-02-19 14:01:36,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:01:36,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:01:36,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:01:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:01:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:01:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:01:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:01:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-19 14:01:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-02-19 14:01:36,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-02-19 14:01:36,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:01:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:01:36,577 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:01:36,732 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:01:36,734 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:01:36,921 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:01:36,921 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:01:37,023 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:01:37,023 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-19 14:01:37,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:01:37 BoogieIcfgContainer [2024-02-19 14:01:37,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:01:37,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:01:37,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:01:37,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:01:37,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:01:35" (1/3) ... [2024-02-19 14:01:37,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e9358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:01:37, skipping insertion in model container [2024-02-19 14:01:37,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (2/3) ... [2024-02-19 14:01:37,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e9358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:01:37, skipping insertion in model container [2024-02-19 14:01:37,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:01:37" (3/3) ... [2024-02-19 14:01:37,031 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2024-02-19 14:01:37,044 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:01:37,045 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:01:37,045 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:01:37,155 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2024-02-19 14:01:37,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 80 transitions, 257 flow [2024-02-19 14:01:37,220 INFO L124 PetriNetUnfolderBase]: 6/49 cut-off events. [2024-02-19 14:01:37,221 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-19 14:01:37,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 49 events. 6/49 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2024-02-19 14:01:37,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 80 transitions, 257 flow [2024-02-19 14:01:37,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 46 transitions, 143 flow [2024-02-19 14:01:37,244 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:01:37,251 INFO L369 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2c611973, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:01:37,251 INFO L370 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-02-19 14:01:37,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:01:37,274 INFO L124 PetriNetUnfolderBase]: 5/45 cut-off events. [2024-02-19 14:01:37,274 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-19 14:01:37,274 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:37,275 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:37,275 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-02-19 14:01:37,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1675659911, now seen corresponding path program 1 times [2024-02-19 14:01:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:37,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695823147] [2024-02-19 14:01:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:37,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:38,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:38,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695823147] [2024-02-19 14:01:38,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695823147] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:38,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:38,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:01:38,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093677073] [2024-02-19 14:01:38,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:38,037 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:01:38,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:38,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:01:38,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:01:38,072 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 82 [2024-02-19 14:01:38,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:38,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:38,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 82 [2024-02-19 14:01:38,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:38,615 INFO L124 PetriNetUnfolderBase]: 2651/3776 cut-off events. [2024-02-19 14:01:38,615 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2024-02-19 14:01:38,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8045 conditions, 3776 events. 2651/3776 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17161 event pairs, 879 based on Foata normal form. 1/3593 useless extension candidates. Maximal degree in co-relation 8018. Up to 2329 conditions per place. [2024-02-19 14:01:38,633 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 54 selfloop transitions, 4 changer transitions 13/76 dead transitions. [2024-02-19 14:01:38,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 381 flow [2024-02-19 14:01:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:01:38,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:01:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-02-19 14:01:38,645 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-02-19 14:01:38,648 INFO L308 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2024-02-19 14:01:38,649 INFO L507 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 381 flow [2024-02-19 14:01:38,649 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:38,649 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:38,649 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:38,650 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:01:38,650 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-02-19 14:01:38,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:38,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1477391823, now seen corresponding path program 2 times [2024-02-19 14:01:38,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:38,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782802394] [2024-02-19 14:01:38,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:38,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:39,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:39,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782802394] [2024-02-19 14:01:39,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782802394] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:39,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:39,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:01:39,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020490180] [2024-02-19 14:01:39,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:39,009 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:01:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:01:39,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:01:39,014 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 82 [2024-02-19 14:01:39,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:39,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:39,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 82 [2024-02-19 14:01:39,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:39,367 INFO L124 PetriNetUnfolderBase]: 2651/3732 cut-off events. [2024-02-19 14:01:39,368 INFO L125 PetriNetUnfolderBase]: For 444/448 co-relation queries the response was YES. [2024-02-19 14:01:39,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11725 conditions, 3732 events. 2651/3732 cut-off events. For 444/448 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 16513 event pairs, 417 based on Foata normal form. 1/3587 useless extension candidates. Maximal degree in co-relation 11694. Up to 2383 conditions per place. [2024-02-19 14:01:39,378 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2024-02-19 14:01:39,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 83 transitions, 575 flow [2024-02-19 14:01:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:01:39,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:01:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-02-19 14:01:39,384 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-02-19 14:01:39,385 INFO L308 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2024-02-19 14:01:39,385 INFO L507 AbstractCegarLoop]: Abstraction has has 64 places, 83 transitions, 575 flow [2024-02-19 14:01:39,386 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:39,388 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-02-19 14:01:39,388 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2024-02-19 14:01:39,388 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2024-02-19 14:01:39,393 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2024-02-19 14:01:39,394 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2024-02-19 14:01:39,394 INFO L818 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 12 remaining) [2024-02-19 14:01:39,394 INFO L818 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2024-02-19 14:01:39,394 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork5Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2024-02-19 14:01:39,395 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork5Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2024-02-19 14:01:39,395 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork5Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2024-02-19 14:01:39,395 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork5Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2024-02-19 14:01:39,395 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork5Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2024-02-19 14:01:39,395 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:01:41,335 INFO L644 CegarLoopForPetriNet]: Computed Owicki-Gries annotation of size 92806 in 1938681892ns [2024-02-19 14:01:41,355 INFO L457 BasicCegarLoop]: Path program histogram: [2] [2024-02-19 14:01:41,358 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-19 14:01:41,422 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Multiple instances of thread not yet supported: 53#L1134true at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.OwickiGriesUnpetrifier.computeFormulaMapping(OwickiGriesUnpetrifier.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.OwickiGriesUnpetrifier.(OwickiGriesUnpetrifier.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-02-19 14:01:41,427 INFO L158 Benchmark]: Toolchain (without parser) took 5617.33ms. Allocated memory was 69.2MB in the beginning and 608.2MB in the end (delta: 539.0MB). Free memory was 42.7MB in the beginning and 530.6MB in the end (delta: -487.9MB). Peak memory consumption was 323.4MB. Max. memory is 16.1GB. [2024-02-19 14:01:41,428 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 69.2MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-19 14:01:41,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.34ms. Allocated memory was 69.2MB in the beginning and 98.6MB in the end (delta: 29.4MB). Free memory was 42.5MB in the beginning and 54.9MB in the end (delta: -12.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-02-19 14:01:41,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.19ms. Allocated memory is still 98.6MB. Free memory was 54.9MB in the beginning and 52.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-19 14:01:41,429 INFO L158 Benchmark]: Boogie Preprocessor took 84.92ms. Allocated memory is still 98.6MB. Free memory was 52.3MB in the beginning and 49.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-19 14:01:41,429 INFO L158 Benchmark]: RCFGBuilder took 539.38ms. Allocated memory is still 98.6MB. Free memory was 49.5MB in the beginning and 46.4MB in the end (delta: 3.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2024-02-19 14:01:41,429 INFO L158 Benchmark]: TraceAbstraction took 4401.36ms. Allocated memory was 98.6MB in the beginning and 608.2MB in the end (delta: 509.6MB). Free memory was 45.7MB in the beginning and 530.6MB in the end (delta: -484.9MB). Peak memory consumption was 296.6MB. Max. memory is 16.1GB. [2024-02-19 14:01:41,435 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 69.2MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 539.34ms. Allocated memory was 69.2MB in the beginning and 98.6MB in the end (delta: 29.4MB). Free memory was 42.5MB in the beginning and 54.9MB in the end (delta: -12.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.19ms. Allocated memory is still 98.6MB. Free memory was 54.9MB in the beginning and 52.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.92ms. Allocated memory is still 98.6MB. Free memory was 52.3MB in the beginning and 49.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 539.38ms. Allocated memory is still 98.6MB. Free memory was 49.5MB in the beginning and 46.4MB in the end (delta: 3.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4401.36ms. Allocated memory was 98.6MB in the beginning and 608.2MB in the end (delta: 509.6MB). Free memory was 45.7MB in the beginning and 530.6MB in the end (delta: -484.9MB). Peak memory consumption was 296.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Multiple instances of thread not yet supported: 53#L1134true de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Multiple instances of thread not yet supported: 53#L1134true: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.OwickiGriesUnpetrifier.computeFormulaMapping(OwickiGriesUnpetrifier.java:163) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-02-19 14:01:41,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:01:43,281 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:01:43,365 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-02-19 14:01:43,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:01:43,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:01:43,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:01:43,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:01:43,392 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:01:43,392 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:01:43,395 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:01:43,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:01:43,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:01:43,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:01:43,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:01:43,397 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:01:43,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:01:43,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:01:43,398 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:01:43,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:01:43,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:01:43,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:01:43,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:01:43,400 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:01:43,400 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-02-19 14:01:43,400 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-02-19 14:01:43,400 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:01:43,400 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-02-19 14:01:43,401 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:01:43,401 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:01:43,401 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:01:43,402 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:01:43,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:01:43,402 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:01:43,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:01:43,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:01:43,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:01:43,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:01:43,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:01:43,404 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-02-19 14:01:43,404 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-02-19 14:01:43,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:01:43,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:01:43,404 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:01:43,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:01:43,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:01:43,405 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-02-19 14:01:43,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:01:43,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:01:43,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:01:43,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:01:43,670 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:01:43,670 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:01:43,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i [2024-02-19 14:01:44,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:01:44,982 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:01:44,986 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i [2024-02-19 14:01:45,007 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3f583f04/ed41a47480ef42e2bf6ce7cdf42ad723/FLAG622312b66 [2024-02-19 14:01:45,019 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3f583f04/ed41a47480ef42e2bf6ce7cdf42ad723 [2024-02-19 14:01:45,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:01:45,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:01:45,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:01:45,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:01:45,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:01:45,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c6a080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45, skipping insertion in model container [2024-02-19 14:01:45,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,092 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:01:45,495 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i[55568,55581] [2024-02-19 14:01:45,520 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:01:45,549 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:01:45,583 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i[55568,55581] [2024-02-19 14:01:45,588 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:01:45,670 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:01:45,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45 WrapperNode [2024-02-19 14:01:45,671 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:01:45,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:01:45,672 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:01:45,672 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:01:45,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,731 INFO L138 Inliner]: procedures = 327, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2024-02-19 14:01:45,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:01:45,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:01:45,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:01:45,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:01:45,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,776 INFO L175 MemorySlicer]: Split 18 memory accesses to 8 slices as follows [2, 2, 4, 2, 2, 2, 2, 2]. 22 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 2, 1, 1, 1, 1, 1]. [2024-02-19 14:01:45,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:01:45,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:01:45,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:01:45,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:01:45,813 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (1/1) ... [2024-02-19 14:01:45,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:01:45,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:45,847 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) [2024-02-19 14:01:45,865 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 [2024-02-19 14:01:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-02-19 14:01:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-02-19 14:01:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-02-19 14:01:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-02-19 14:01:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2024-02-19 14:01:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2024-02-19 14:01:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2024-02-19 14:01:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#7 [2024-02-19 14:01:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-02-19 14:01:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-02-19 14:01:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-02-19 14:01:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-02-19 14:01:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-02-19 14:01:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2024-02-19 14:01:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2024-02-19 14:01:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2024-02-19 14:01:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 14:01:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:01:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-02-19 14:01:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-02-19 14:01:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-02-19 14:01:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-02-19 14:01:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2024-02-19 14:01:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2024-02-19 14:01:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2024-02-19 14:01:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#7 [2024-02-19 14:01:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:01:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-02-19 14:01:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-02-19 14:01:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-02-19 14:01:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-02-19 14:01:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-02-19 14:01:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2024-02-19 14:01:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2024-02-19 14:01:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2024-02-19 14:01:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-02-19 14:01:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-02-19 14:01:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-02-19 14:01:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-02-19 14:01:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-02-19 14:01:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-02-19 14:01:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2024-02-19 14:01:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2024-02-19 14:01:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 14:01:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2024-02-19 14:01:45,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2024-02-19 14:01:45,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:01:45,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:01:45,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:01:45,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:01:45,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:01:45,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:01:45,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:01:45,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:01:45,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:01:45,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:01:45,902 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:01:46,075 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:01:46,078 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:01:46,289 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:01:46,289 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:01:46,391 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:01:46,392 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-19 14:01:46,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:01:46 BoogieIcfgContainer [2024-02-19 14:01:46,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:01:46,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:01:46,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:01:46,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:01:46,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:01:45" (1/3) ... [2024-02-19 14:01:46,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4eec29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:01:46, skipping insertion in model container [2024-02-19 14:01:46,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:45" (2/3) ... [2024-02-19 14:01:46,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4eec29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:01:46, skipping insertion in model container [2024-02-19 14:01:46,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:01:46" (3/3) ... [2024-02-19 14:01:46,401 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2024-02-19 14:01:46,415 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:01:46,415 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:01:46,415 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:01:46,494 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2024-02-19 14:01:46,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 80 transitions, 257 flow [2024-02-19 14:01:46,560 INFO L124 PetriNetUnfolderBase]: 6/49 cut-off events. [2024-02-19 14:01:46,560 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-19 14:01:46,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 49 events. 6/49 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2024-02-19 14:01:46,565 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 80 transitions, 257 flow [2024-02-19 14:01:46,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 46 transitions, 143 flow [2024-02-19 14:01:46,580 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:01:46,587 INFO L369 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@26020f7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:01:46,587 INFO L370 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-02-19 14:01:46,608 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:01:46,609 INFO L124 PetriNetUnfolderBase]: 5/45 cut-off events. [2024-02-19 14:01:46,609 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-19 14:01:46,609 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:46,610 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:46,611 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-02-19 14:01:46,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:46,615 INFO L85 PathProgramCache]: Analyzing trace with hash 341188919, now seen corresponding path program 1 times [2024-02-19 14:01:46,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:01:46,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442725933] [2024-02-19 14:01:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:46,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:01:46,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:01:46,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:01:46,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-02-19 14:01:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:46,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 14:01:46,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:01:46,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 12 treesize of output 8 [2024-02-19 14:01:47,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 51 [2024-02-19 14:01:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:47,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:01:47,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:01:47,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442725933] [2024-02-19 14:01:47,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442725933] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:47,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:47,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:01:47,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012212050] [2024-02-19 14:01:47,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:47,044 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:01:47,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:01:47,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:01:47,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:01:47,097 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 82 [2024-02-19 14:01:47,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-02-19 14:01:47,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:47,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 82 [2024-02-19 14:01:47,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:47,624 INFO L124 PetriNetUnfolderBase]: 2651/3776 cut-off events. [2024-02-19 14:01:47,625 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-02-19 14:01:47,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8045 conditions, 3776 events. 2651/3776 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17137 event pairs, 879 based on Foata normal form. 1/3629 useless extension candidates. Maximal degree in co-relation 8018. Up to 2329 conditions per place. [2024-02-19 14:01:47,648 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 54 selfloop transitions, 4 changer transitions 13/76 dead transitions. [2024-02-19 14:01:47,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 381 flow [2024-02-19 14:01:47,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:01:47,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:01:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-02-19 14:01:47,661 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-02-19 14:01:47,664 INFO L308 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2024-02-19 14:01:47,665 INFO L507 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 381 flow [2024-02-19 14:01:47,665 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-02-19 14:01:47,665 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:47,665 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:47,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-02-19 14:01:47,870 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:01:47,871 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-02-19 14:01:47,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:47,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1634868567, now seen corresponding path program 2 times [2024-02-19 14:01:47,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-02-19 14:01:47,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666206898] [2024-02-19 14:01:47,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:01:47,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:01:47,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-02-19 14:01:47,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-02-19 14:01:47,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-02-19 14:01:48,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-19 14:01:48,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:01:48,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 14:01:48,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:01:48,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 12 treesize of output 8 [2024-02-19 14:01:48,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 51 [2024-02-19 14:01:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:48,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:01:48,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-02-19 14:01:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666206898] [2024-02-19 14:01:48,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666206898] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:48,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:48,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:01:48,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906952619] [2024-02-19 14:01:48,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:48,118 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:01:48,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-02-19 14:01:48,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:01:48,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:01:48,122 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 82 [2024-02-19 14:01:48,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-02-19 14:01:48,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:48,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 82 [2024-02-19 14:01:48,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:48,537 INFO L124 PetriNetUnfolderBase]: 2651/3732 cut-off events. [2024-02-19 14:01:48,537 INFO L125 PetriNetUnfolderBase]: For 447/455 co-relation queries the response was YES. [2024-02-19 14:01:48,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11725 conditions, 3732 events. 2651/3732 cut-off events. For 447/455 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 16542 event pairs, 417 based on Foata normal form. 1/3585 useless extension candidates. Maximal degree in co-relation 11694. Up to 2383 conditions per place. [2024-02-19 14:01:48,546 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2024-02-19 14:01:48,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 83 transitions, 575 flow [2024-02-19 14:01:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:01:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:01:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-02-19 14:01:48,548 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-02-19 14:01:48,549 INFO L308 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2024-02-19 14:01:48,549 INFO L507 AbstractCegarLoop]: Abstraction has has 64 places, 83 transitions, 575 flow [2024-02-19 14:01:48,549 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-02-19 14:01:48,551 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-02-19 14:01:48,552 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2024-02-19 14:01:48,552 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2024-02-19 14:01:48,552 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2024-02-19 14:01:48,552 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2024-02-19 14:01:48,553 INFO L818 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 12 remaining) [2024-02-19 14:01:48,553 INFO L818 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2024-02-19 14:01:48,553 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2024-02-19 14:01:48,553 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2024-02-19 14:01:48,553 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2024-02-19 14:01:48,553 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork0Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2024-02-19 14:01:48,554 INFO L818 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork0Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2024-02-19 14:01:48,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-02-19 14:01:48,768 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-02-19 14:01:50,700 INFO L644 CegarLoopForPetriNet]: Computed Owicki-Gries annotation of size 105556 in 1930965627ns [2024-02-19 14:01:50,725 INFO L457 BasicCegarLoop]: Path program histogram: [2] [2024-02-19 14:01:50,728 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-19 14:01:50,782 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Multiple instances of thread not yet supported: 21#L1132true at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.OwickiGriesUnpetrifier.computeFormulaMapping(OwickiGriesUnpetrifier.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.OwickiGriesUnpetrifier.(OwickiGriesUnpetrifier.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-02-19 14:01:50,786 INFO L158 Benchmark]: Toolchain (without parser) took 5763.73ms. Allocated memory was 77.6MB in the beginning and 675.3MB in the end (delta: 597.7MB). Free memory was 36.2MB in the beginning and 437.6MB in the end (delta: -401.5MB). Peak memory consumption was 251.7MB. Max. memory is 16.1GB. [2024-02-19 14:01:50,786 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 50.3MB. Free memory was 32.5MB in the beginning and 32.4MB in the end (delta: 34.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-19 14:01:50,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 648.90ms. Allocated memory is still 77.6MB. Free memory was 36.0MB in the beginning and 50.4MB in the end (delta: -14.4MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2024-02-19 14:01:50,787 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.06ms. Allocated memory is still 77.6MB. Free memory was 50.4MB in the beginning and 47.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-19 14:01:50,787 INFO L158 Benchmark]: Boogie Preprocessor took 73.58ms. Allocated memory is still 77.6MB. Free memory was 47.9MB in the beginning and 44.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-19 14:01:50,788 INFO L158 Benchmark]: RCFGBuilder took 585.00ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 44.5MB in the beginning and 52.0MB in the end (delta: -7.5MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2024-02-19 14:01:50,788 INFO L158 Benchmark]: TraceAbstraction took 4391.08ms. Allocated memory was 102.8MB in the beginning and 675.3MB in the end (delta: 572.5MB). Free memory was 50.9MB in the beginning and 437.6MB in the end (delta: -386.7MB). Peak memory consumption was 242.5MB. Max. memory is 16.1GB. [2024-02-19 14:01:50,790 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 50.3MB. Free memory was 32.5MB in the beginning and 32.4MB in the end (delta: 34.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 648.90ms. Allocated memory is still 77.6MB. Free memory was 36.0MB in the beginning and 50.4MB in the end (delta: -14.4MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.06ms. Allocated memory is still 77.6MB. Free memory was 50.4MB in the beginning and 47.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.58ms. Allocated memory is still 77.6MB. Free memory was 47.9MB in the beginning and 44.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 585.00ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 44.5MB in the beginning and 52.0MB in the end (delta: -7.5MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4391.08ms. Allocated memory was 102.8MB in the beginning and 675.3MB in the end (delta: 572.5MB). Free memory was 50.9MB in the beginning and 437.6MB in the end (delta: -386.7MB). Peak memory consumption was 242.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Multiple instances of thread not yet supported: 21#L1132true de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Multiple instances of thread not yet supported: 21#L1132true: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.OwickiGriesUnpetrifier.computeFormulaMapping(OwickiGriesUnpetrifier.java:163) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-02-19 14:01:50,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Multiple instances of thread not yet supported: 21#L1132true