./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_67-pthread_cond_wait_unknown_1_pos.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_67-pthread_cond_wait_unknown_1_pos.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:15:05,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:15:05,308 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:15:05,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:15:05,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:15:05,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:15:05,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:15:05,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:15:05,333 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:15:05,333 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:15:05,333 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:15:05,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:15:05,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:15:05,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:15:05,335 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:15:05,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:15:05,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:15:05,336 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:15:05,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:15:05,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:15:05,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:15:05,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:15:05,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:15:05,339 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:15:05,339 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:15:05,340 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:15:05,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:15:05,341 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:15:05,341 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:15:05,342 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:15:05,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:15:05,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:15:05,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:15:05,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:15:05,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:15:05,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:15:05,354 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:15:05,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:15:05,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:15:05,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:15:05,355 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:15:05,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:15:05,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:15:05,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 02:15:05,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:15:05,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:15:05,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:15:05,647 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:15:05,648 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:15:05,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2024-06-28 02:15:06,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:15:07,261 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:15:07,262 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2024-06-28 02:15:07,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ea2ab541/052d4d99935c4ed6879289ad5efb8af2/FLAGcb771f1c5 [2024-06-28 02:15:07,303 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ea2ab541/052d4d99935c4ed6879289ad5efb8af2 [2024-06-28 02:15:07,306 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:15:07,307 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:15:07,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_67-pthread_cond_wait_unknown_1_pos.yml/witness.yml [2024-06-28 02:15:07,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:15:07,410 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:15:07,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:15:07,411 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:15:07,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:15:07,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:15:07" (1/2) ... [2024-06-28 02:15:07,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b46db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:15:07, skipping insertion in model container [2024-06-28 02:15:07,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:15:07" (1/2) ... [2024-06-28 02:15:07,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f0f4f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:15:07, skipping insertion in model container [2024-06-28 02:15:07,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:15:07" (2/2) ... [2024-06-28 02:15:07,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b46db2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:07, skipping insertion in model container [2024-06-28 02:15:07,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:15:07" (2/2) ... [2024-06-28 02:15:07,420 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:15:07,463 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:15:07,464 INFO L97 edCorrectnessWitness]: Location invariant before [L1376-L1376] (! multithreaded || (mut_locked || (g == 0 || g == 1))) && (! multithreaded || (g == 0 || g == 1)) [2024-06-28 02:15:07,464 INFO L97 edCorrectnessWitness]: Location invariant before [L1378-L1378] (! multithreaded || (mut_locked || (g == 0 || g == 1))) && (! multithreaded || (g == 0 || g == 1)) [2024-06-28 02:15:07,465 INFO L103 edCorrectnessWitness]: ghost_variable mut_locked = 0 [2024-06-28 02:15:07,465 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:15:07,465 INFO L106 edCorrectnessWitness]: ghost_update [L1357-L1357] mut_locked = 0; [2024-06-28 02:15:07,465 INFO L106 edCorrectnessWitness]: ghost_update [L1357-L1357] mut_locked = 1; [2024-06-28 02:15:07,465 INFO L106 edCorrectnessWitness]: ghost_update [L1375-L1375] multithreaded = 1; [2024-06-28 02:15:07,466 INFO L106 edCorrectnessWitness]: ghost_update [L1360-L1360] mut_locked = 0; [2024-06-28 02:15:07,466 INFO L106 edCorrectnessWitness]: ghost_update [L1368-L1368] mut_locked = 0; [2024-06-28 02:15:07,466 INFO L106 edCorrectnessWitness]: ghost_update [L1364-L1364] mut_locked = 1; [2024-06-28 02:15:07,466 INFO L106 edCorrectnessWitness]: ghost_update [L1355-L1355] mut_locked = 1; [2024-06-28 02:15:07,515 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:15:07,670 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i[1103,1116] [2024-06-28 02:15:07,935 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:15:07,947 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-06-28 02:15:07,984 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i[1103,1116] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:15:08,062 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:15:08,145 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:15:08,145 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08 WrapperNode [2024-06-28 02:15:08,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:15:08,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:15:08,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:15:08,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:15:08,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,230 INFO L138 Inliner]: procedures = 354, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2024-06-28 02:15:08,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:15:08,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:15:08,232 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:15:08,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:15:08,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,283 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-06-28 02:15:08,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:15:08,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:15:08,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:15:08,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:15:08,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (1/1) ... [2024-06-28 02:15:08,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:15:08,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:15:08,362 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) [2024-06-28 02:15:08,388 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 [2024-06-28 02:15:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-06-28 02:15:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-06-28 02:15:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-06-28 02:15:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-06-28 02:15:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-28 02:15:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-28 02:15:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:15:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:15:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 02:15:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:15:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:15:08,413 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:15:08,697 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:15:08,699 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:15:08,905 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:15:08,906 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:15:09,014 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:15:09,014 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:15:09,015 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:15:09 BoogieIcfgContainer [2024-06-28 02:15:09,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:15:09,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:15:09,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:15:09,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:15:09,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:15:07" (1/4) ... [2024-06-28 02:15:09,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb32a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:15:09, skipping insertion in model container [2024-06-28 02:15:09,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:15:07" (2/4) ... [2024-06-28 02:15:09,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb32a7a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:15:09, skipping insertion in model container [2024-06-28 02:15:09,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:15:08" (3/4) ... [2024-06-28 02:15:09,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb32a7a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:15:09, skipping insertion in model container [2024-06-28 02:15:09,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:15:09" (4/4) ... [2024-06-28 02:15:09,026 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2024-06-28 02:15:09,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:15:09,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 02:15:09,043 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:15:09,079 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-28 02:15:09,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 80 flow [2024-06-28 02:15:09,142 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2024-06-28 02:15:09,143 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-28 02:15:09,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 31 events. 1/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-06-28 02:15:09,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 80 flow [2024-06-28 02:15:09,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 67 flow [2024-06-28 02:15:09,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:15:09,177 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6b7c8569, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:15:09,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 02:15:09,180 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:15:09,180 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:15:09,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:15:09,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:09,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:15:09,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-28 02:15:09,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 232755531, now seen corresponding path program 1 times [2024-06-28 02:15:09,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:09,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272504814] [2024-06-28 02:15:09,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:09,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:09,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:09,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272504814] [2024-06-28 02:15:09,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272504814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:09,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:09,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:15:09,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666416956] [2024-06-28 02:15:09,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:09,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:15:09,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:15:09,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:15:09,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-28 02:15:09,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-06-28 02:15:09,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:09,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-28 02:15:09,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:09,829 INFO L124 PetriNetUnfolderBase]: 214/441 cut-off events. [2024-06-28 02:15:09,829 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-06-28 02:15:09,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 441 events. 214/441 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2033 event pairs, 124 based on Foata normal form. 62/492 useless extension candidates. Maximal degree in co-relation 840. Up to 267 conditions per place. [2024-06-28 02:15:09,837 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 29 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-06-28 02:15:09,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 158 flow [2024-06-28 02:15:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:15:09,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:15:09,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-06-28 02:15:09,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-06-28 02:15:09,848 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 67 flow. Second operand 3 states and 64 transitions. [2024-06-28 02:15:09,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 158 flow [2024-06-28 02:15:09,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:15:09,854 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 88 flow [2024-06-28 02:15:09,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-06-28 02:15:09,858 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2024-06-28 02:15:09,859 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 88 flow [2024-06-28 02:15:09,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-06-28 02:15:09,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:09,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:09,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:15:09,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-28 02:15:09,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1969006437, now seen corresponding path program 1 times [2024-06-28 02:15:09,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:09,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511310109] [2024-06-28 02:15:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:09,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:09,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:09,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511310109] [2024-06-28 02:15:09,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511310109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:09,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:09,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:15:09,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539132761] [2024-06-28 02:15:09,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:09,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:15:09,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:15:09,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:15:09,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-28 02:15:09,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-06-28 02:15:09,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:09,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-28 02:15:09,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:10,085 INFO L124 PetriNetUnfolderBase]: 164/337 cut-off events. [2024-06-28 02:15:10,085 INFO L125 PetriNetUnfolderBase]: For 103/107 co-relation queries the response was YES. [2024-06-28 02:15:10,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 337 events. 164/337 cut-off events. For 103/107 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1422 event pairs, 95 based on Foata normal form. 25/355 useless extension candidates. Maximal degree in co-relation 560. Up to 214 conditions per place. [2024-06-28 02:15:10,090 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 20 selfloop transitions, 2 changer transitions 9/38 dead transitions. [2024-06-28 02:15:10,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 164 flow [2024-06-28 02:15:10,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:15:10,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:15:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-06-28 02:15:10,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-06-28 02:15:10,094 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 88 flow. Second operand 3 states and 60 transitions. [2024-06-28 02:15:10,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 164 flow [2024-06-28 02:15:10,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:15:10,099 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 60 flow [2024-06-28 02:15:10,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2024-06-28 02:15:10,103 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-06-28 02:15:10,103 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 60 flow [2024-06-28 02:15:10,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-06-28 02:15:10,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:10,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:10,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:15:10,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-28 02:15:10,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:10,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1449934716, now seen corresponding path program 1 times [2024-06-28 02:15:10,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:10,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739567853] [2024-06-28 02:15:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:10,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:10,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:10,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739567853] [2024-06-28 02:15:10,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739567853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:10,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:10,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:15:10,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650388942] [2024-06-28 02:15:10,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:10,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:15:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:15:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:15:10,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 02:15:10,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-06-28 02:15:10,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:10,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 02:15:10,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:10,456 INFO L124 PetriNetUnfolderBase]: 131/268 cut-off events. [2024-06-28 02:15:10,456 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-28 02:15:10,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 268 events. 131/268 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1034 event pairs, 44 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 423. Up to 95 conditions per place. [2024-06-28 02:15:10,459 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 20 selfloop transitions, 3 changer transitions 15/43 dead transitions. [2024-06-28 02:15:10,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 187 flow [2024-06-28 02:15:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:15:10,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:15:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-28 02:15:10,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 02:15:10,462 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 60 flow. Second operand 5 states and 75 transitions. [2024-06-28 02:15:10,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 187 flow [2024-06-28 02:15:10,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 43 transitions, 169 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:15:10,465 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 63 flow [2024-06-28 02:15:10,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=63, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2024-06-28 02:15:10,467 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-06-28 02:15:10,467 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 63 flow [2024-06-28 02:15:10,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-06-28 02:15:10,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:10,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:10,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:15:10,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-28 02:15:10,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:10,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1500720236, now seen corresponding path program 1 times [2024-06-28 02:15:10,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:10,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414056767] [2024-06-28 02:15:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:10,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:10,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:10,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414056767] [2024-06-28 02:15:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414056767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:10,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:10,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:15:10,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384343883] [2024-06-28 02:15:10,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:10,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:15:10,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:15:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:15:10,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-28 02:15:10,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-28 02:15:10,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:10,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-28 02:15:10,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:10,729 INFO L124 PetriNetUnfolderBase]: 37/100 cut-off events. [2024-06-28 02:15:10,729 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-06-28 02:15:10,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 100 events. 37/100 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 271 event pairs, 8 based on Foata normal form. 16/115 useless extension candidates. Maximal degree in co-relation 219. Up to 31 conditions per place. [2024-06-28 02:15:10,730 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 19 selfloop transitions, 5 changer transitions 8/37 dead transitions. [2024-06-28 02:15:10,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 164 flow [2024-06-28 02:15:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:15:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:15:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-28 02:15:10,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-28 02:15:10,731 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 63 flow. Second operand 5 states and 71 transitions. [2024-06-28 02:15:10,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 164 flow [2024-06-28 02:15:10,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 154 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:15:10,733 INFO L231 Difference]: Finished difference. Result has 31 places, 17 transitions, 51 flow [2024-06-28 02:15:10,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=51, PETRI_PLACES=31, PETRI_TRANSITIONS=17} [2024-06-28 02:15:10,734 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places. [2024-06-28 02:15:10,734 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 17 transitions, 51 flow [2024-06-28 02:15:10,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-28 02:15:10,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:10,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:10,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:15:10,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-28 02:15:10,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1424553982, now seen corresponding path program 1 times [2024-06-28 02:15:10,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:10,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17314416] [2024-06-28 02:15:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-28 02:15:10,763 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-28 02:15:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-28 02:15:10,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-28 02:15:10,796 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-28 02:15:10,797 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2024-06-28 02:15:10,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-28 02:15:10,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-28 02:15:10,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-28 02:15:10,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-28 02:15:10,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-06-28 02:15:10,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:15:10,800 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-28 02:15:10,805 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:15:10,805 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:15:10,831 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 02:15:10,832 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 02:15:10,832 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:15:10 BasicIcfg [2024-06-28 02:15:10,832 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:15:10,833 INFO L158 Benchmark]: Toolchain (without parser) took 3423.22ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 109.3MB in the beginning and 173.9MB in the end (delta: -64.6MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2024-06-28 02:15:10,833 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 169.9MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:15:10,833 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 169.9MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:15:10,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 735.30ms. Allocated memory is still 169.9MB. Free memory was 109.1MB in the beginning and 61.7MB in the end (delta: 47.3MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-06-28 02:15:10,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.55ms. Allocated memory is still 169.9MB. Free memory was 61.7MB in the beginning and 58.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:15:10,834 INFO L158 Benchmark]: Boogie Preprocessor took 96.38ms. Allocated memory is still 169.9MB. Free memory was 58.9MB in the beginning and 55.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 02:15:10,835 INFO L158 Benchmark]: RCFGBuilder took 687.39ms. Allocated memory is still 169.9MB. Free memory was 55.6MB in the beginning and 112.3MB in the end (delta: -56.7MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2024-06-28 02:15:10,835 INFO L158 Benchmark]: TraceAbstraction took 1814.17ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 111.4MB in the beginning and 173.9MB in the end (delta: -62.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-28 02:15:10,837 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 169.9MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 169.9MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 735.30ms. Allocated memory is still 169.9MB. Free memory was 109.1MB in the beginning and 61.7MB in the end (delta: 47.3MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.55ms. Allocated memory is still 169.9MB. Free memory was 61.7MB in the beginning and 58.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.38ms. Allocated memory is still 169.9MB. Free memory was 58.9MB in the beginning and 55.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 687.39ms. Allocated memory is still 169.9MB. Free memory was 55.6MB in the beginning and 112.3MB in the end (delta: -56.7MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1814.17ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 111.4MB in the beginning and 173.9MB in the end (delta: -62.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int mut_locked = 0; [L1] 0 //@ ghost int multithreaded = 0; [L1351] 0 int g; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1373] 0 pthread_t t1; [L1374] 0 pthread_t t2; [L1375] 0 //@ ghost multithreaded = 1; VAL [\old(argc)=1150, \old(argv)={1151:1152}, argc=1150, g=0, mut={3:0}, t1=0] [L1375] FCALL, FORK 0 pthread_create(&t1,((void *)0),f1,((void *)0)) VAL [\old(argc)=1150, \old(argv)={1151:1152}, \old(ptr)={0:0}, argc=1150, g=0, mut={3:0}, t1=0] [L1376] 0 //@ assert ((!multithreaded || (mut_locked || ((g == 0) || (g == 1)))) && (!multithreaded || ((g == 0) || (g == 1)))); [L1377] FCALL, FORK 0 pthread_create(&t2,((void *)0),f2,((void *)0)) VAL [\old(argc)=1150, \old(argv)={1151:1152}, \old(ptr)={0:0}, argc=1150, g=0, mut={3:0}, t1=0, t2=1] [L1355] 1 //@ ghost mut_locked = 1; [L1356] 1 g = 1 VAL [\old(ptr)={0:0}, g=1, mut={3:0}, ptr={0:0}] [L1357] 1 //@ ghost mut_locked = 1; [L1357] 1 //@ ghost mut_locked = 0; [L1364] 2 //@ ghost mut_locked = 1; [L1365] CALL 2 __VERIFIER_assert(g == 0) [L19] COND TRUE 2 !(cond) VAL [\old(cond)=0, \old(ptr)={0:0}, cond=0, g=1, mut={3:0}, ptr={0:0}] [L19] 2 reach_error() VAL [\old(cond)=0, \old(ptr)={0:0}, cond=0, g=1, mut={3:0}, ptr={0:0}] - UnprovableResult [Line: 1376]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1378]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1375]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1377]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 54 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 229 IncrementalHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 21 mSDtfsCounter, 229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=1, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-06-28 02:15:10,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE