./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c --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/weaver/parallel-bakery-4.wvr.c -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 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 --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 14:39:53,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:39:53,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:39:53,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:39:53,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:39:53,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:39:53,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:39:53,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:39:53,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:39:53,976 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:39:53,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:39:53,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:39:53,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:39:53,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:39:53,979 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:39:53,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:39:53,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:39:53,979 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:39:53,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:39:53,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:39:53,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:39:53,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:39:53,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:39:53,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:39:53,982 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:39:53,982 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:39:53,982 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:39:53,983 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:39:53,983 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:39:53,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:39:53,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:39:53,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:39:53,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:39:53,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:39:53,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:39:53,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:39:53,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:39:53,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:39:53,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:39:53,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:39:53,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:39:53,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:39:53,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:39:53,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39dcc47a23129180b44ef3e235976e9c499f5290fa3f0e6dd106879ae94f5ae2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:39:54,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:39:54,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:39:54,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:39:54,352 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:39:54,353 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:39:54,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2024-02-19 14:39:55,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:39:55,802 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:39:55,808 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2024-02-19 14:39:55,819 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d7608aea/0d461fd1fc284219ae7f6ffa0e698fc7/FLAG95abda7bb [2024-02-19 14:39:55,830 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d7608aea/0d461fd1fc284219ae7f6ffa0e698fc7 [2024-02-19 14:39:55,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:39:55,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:39:55,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:39:55,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:39:55,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:39:55,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:39:55" (1/1) ... [2024-02-19 14:39:55,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b39a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:55, skipping insertion in model container [2024-02-19 14:39:55,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:39:55" (1/1) ... [2024-02-19 14:39:55,874 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:39:56,100 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c[7978,7991] [2024-02-19 14:39:56,107 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:39:56,117 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:39:56,172 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c[7978,7991] [2024-02-19 14:39:56,179 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:39:56,196 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:39:56,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56 WrapperNode [2024-02-19 14:39:56,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:39:56,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:39:56,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:39:56,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:39:56,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,274 INFO L138 Inliner]: procedures = 23, calls = 176, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 404 [2024-02-19 14:39:56,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:39:56,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:39:56,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:39:56,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:39:56,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,307 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-19 14:39:56,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:39:56,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:39:56,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:39:56,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:39:56,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (1/1) ... [2024-02-19 14:39:56,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:39:56,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:39:56,369 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 14:39:56,389 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 14:39:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:39:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:39:56,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:39:56,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:39:56,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:39:56,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:39:56,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:39:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-19 14:39:56,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-19 14:39:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:39:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:39:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:39:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:39:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:39:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:39:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:39:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:39:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:39:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:39:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:39:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 14:39:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 14:39:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:39:56,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:39:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:39:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:39:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:39:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:39:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:39:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:39:56,429 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 14:39:56,572 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:39:56,574 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:39:56,996 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:39:56,996 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:39:57,291 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:39:57,291 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-19 14:39:57,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:39:57 BoogieIcfgContainer [2024-02-19 14:39:57,292 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:39:57,294 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:39:57,294 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:39:57,297 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:39:57,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:39:55" (1/3) ... [2024-02-19 14:39:57,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343a1aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:39:57, skipping insertion in model container [2024-02-19 14:39:57,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:39:56" (2/3) ... [2024-02-19 14:39:57,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343a1aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:39:57, skipping insertion in model container [2024-02-19 14:39:57,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:39:57" (3/3) ... [2024-02-19 14:39:57,299 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2024-02-19 14:39:57,316 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:39:57,316 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:39:57,316 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:39:57,379 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-19 14:39:57,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 87 transitions, 202 flow [2024-02-19 14:39:57,454 INFO L124 PetriNetUnfolderBase]: 0/83 cut-off events. [2024-02-19 14:39:57,455 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 14:39:57,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 83 events. 0/83 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 199 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-02-19 14:39:57,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 87 transitions, 202 flow [2024-02-19 14:39:57,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 82 transitions, 188 flow [2024-02-19 14:39:57,468 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:39:57,474 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;@4d0cbd3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:39:57,474 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-19 14:39:57,499 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:39:57,499 INFO L124 PetriNetUnfolderBase]: 0/81 cut-off events. [2024-02-19 14:39:57,500 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 14:39:57,500 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:57,501 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, 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 14:39:57,501 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:39:57,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:57,506 INFO L85 PathProgramCache]: Analyzing trace with hash 772904476, now seen corresponding path program 1 times [2024-02-19 14:39:57,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:39:57,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408271996] [2024-02-19 14:39:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:39:57,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:39:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:39:58,613 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 14:39:58,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:39:58,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408271996] [2024-02-19 14:39:58,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408271996] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:39:58,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:39:58,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-02-19 14:39:58,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860692922] [2024-02-19 14:39:58,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:58,625 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-19 14:39:58,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:39:58,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-19 14:39:58,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-02-19 14:39:58,709 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 87 [2024-02-19 14:39:58,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 transitions, 188 flow. Second operand has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 11 states have internal predecessors, (376), 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 14:39:58,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:58,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 87 [2024-02-19 14:39:58,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:40:14,552 INFO L124 PetriNetUnfolderBase]: 135242/196139 cut-off events. [2024-02-19 14:40:14,553 INFO L125 PetriNetUnfolderBase]: For 7504/7504 co-relation queries the response was YES. [2024-02-19 14:40:14,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385047 conditions, 196139 events. 135242/196139 cut-off events. For 7504/7504 co-relation queries the response was YES. Maximal size of possible extension queue 4821. Compared 1582501 event pairs, 45565 based on Foata normal form. 1/195736 useless extension candidates. Maximal degree in co-relation 340608. Up to 68319 conditions per place. [2024-02-19 14:40:15,977 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 340 selfloop transitions, 25 changer transitions 33/423 dead transitions. [2024-02-19 14:40:15,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 423 transitions, 1813 flow [2024-02-19 14:40:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-19 14:40:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-19 14:40:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 805 transitions. [2024-02-19 14:40:15,993 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6609195402298851 [2024-02-19 14:40:15,997 INFO L308 CegarLoopForPetriNet]: 95 programPoint places, 13 predicate places. [2024-02-19 14:40:15,997 INFO L507 AbstractCegarLoop]: Abstraction has has 108 places, 423 transitions, 1813 flow [2024-02-19 14:40:15,998 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 11 states have internal predecessors, (376), 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 14:40:15,998 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:40:15,998 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, 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 14:40:15,998 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:40:15,999 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:40:15,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:40:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1729553312, now seen corresponding path program 2 times [2024-02-19 14:40:16,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:40:16,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036836636] [2024-02-19 14:40:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:40:16,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:40:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:40:16,905 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 14:40:16,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:40:16,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036836636] [2024-02-19 14:40:16,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036836636] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:40:16,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:40:16,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-19 14:40:16,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653205354] [2024-02-19 14:40:16,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:40:16,908 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-19 14:40:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:40:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-19 14:40:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-19 14:40:17,052 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-02-19 14:40:17,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 423 transitions, 1813 flow. Second operand has 9 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 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 14:40:17,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:40:17,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-02-19 14:40:17,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand