./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/lazy01.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/lazy01.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/pthread/lazy01.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/lazy01.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 01:14:05,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:14:06,021 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:14:06,026 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:14:06,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:14:06,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:14:06,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:14:06,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:14:06,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:14:06,056 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:14:06,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:14:06,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:14:06,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:14:06,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:14:06,058 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:14:06,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:14:06,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:14:06,059 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:14:06,059 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:14:06,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:14:06,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:14:06,060 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:14:06,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:14:06,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:14:06,061 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:14:06,061 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:14:06,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:14:06,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:14:06,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:14:06,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:14:06,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:14:06,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:14:06,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:14:06,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:14:06,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:14:06,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:14:06,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:14:06,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:14:06,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:14:06,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:14:06,066 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:14:06,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:14:06,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:14:06,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:14:06,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:14:06,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:14:06,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:14:06,330 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:14:06,330 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:14:06,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/lazy01.yml/witness.yml [2024-06-28 01:14:06,410 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:14:06,411 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:14:06,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2024-06-28 01:14:07,522 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:14:07,718 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:14:07,719 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2024-06-28 01:14:07,729 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fcb22500/78cc82da584f422a98dfd1e1afffd0aa/FLAGc368512ed [2024-06-28 01:14:07,738 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fcb22500/78cc82da584f422a98dfd1e1afffd0aa [2024-06-28 01:14:07,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:14:07,740 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:14:07,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:14:07,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:14:07,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:14:07,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:14:06" (1/2) ... [2024-06-28 01:14:07,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17eba053 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:14:07, skipping insertion in model container [2024-06-28 01:14:07,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:14:06" (1/2) ... [2024-06-28 01:14:07,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@203ab0fa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:14:07, skipping insertion in model container [2024-06-28 01:14:07,747 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:14:07" (2/2) ... [2024-06-28 01:14:07,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17eba053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:07, skipping insertion in model container [2024-06-28 01:14:07,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:14:07" (2/2) ... [2024-06-28 01:14:07,747 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:14:07,780 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:14:07,781 INFO L97 edCorrectnessWitness]: Location invariant before [L735-L735] (! multithreaded || (mutex_locked || 0 <= data)) && (! multithreaded || 0 <= data) [2024-06-28 01:14:07,781 INFO L97 edCorrectnessWitness]: Location invariant before [L734-L734] (! multithreaded || (mutex_locked || 0 <= data)) && (! multithreaded || 0 <= data) [2024-06-28 01:14:07,781 INFO L97 edCorrectnessWitness]: Location invariant before [L733-L733] (! multithreaded || (mutex_locked || 0 <= data)) && (! multithreaded || 0 <= data) [2024-06-28 01:14:07,782 INFO L103 edCorrectnessWitness]: ghost_variable mutex_locked = 0 [2024-06-28 01:14:07,782 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:14:07,782 INFO L106 edCorrectnessWitness]: ghost_update [L706-L706] mutex_locked = 1; [2024-06-28 01:14:07,782 INFO L106 edCorrectnessWitness]: ghost_update [L725-L725] mutex_locked = 0; [2024-06-28 01:14:07,782 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] mutex_locked = 0; [2024-06-28 01:14:07,782 INFO L106 edCorrectnessWitness]: ghost_update [L732-L732] multithreaded = 1; [2024-06-28 01:14:07,782 INFO L106 edCorrectnessWitness]: ghost_update [L708-L708] mutex_locked = 0; [2024-06-28 01:14:07,782 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] mutex_locked = 1; [2024-06-28 01:14:07,783 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] mutex_locked = 1; [2024-06-28 01:14:07,815 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:14:08,097 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2024-06-28 01:14:08,107 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:14:08,115 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:14:08,208 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:14:08,226 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:14:08,266 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:14:08,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08 WrapperNode [2024-06-28 01:14:08,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:14:08,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:14:08,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:14:08,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:14:08,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,316 INFO L138 Inliner]: procedures = 169, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 50 [2024-06-28 01:14:08,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:14:08,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:14:08,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:14:08,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:14:08,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,332 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,351 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 01:14:08,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,364 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,366 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,380 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:14:08,381 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:14:08,381 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:14:08,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:14:08,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (1/1) ... [2024-06-28 01:14:08,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:14:08,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:14:08,412 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 01:14:08,414 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 01:14:08,445 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-28 01:14:08,445 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-28 01:14:08,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-28 01:14:08,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-28 01:14:08,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-28 01:14:08,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-28 01:14:08,447 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-28 01:14:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:14:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:14:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:14:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-28 01:14:08,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:14:08,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:14:08,451 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 01:14:08,557 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:14:08,559 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:14:08,720 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:14:08,721 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:14:08,814 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:14:08,814 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:14:08,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:14:08 BoogieIcfgContainer [2024-06-28 01:14:08,815 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:14:08,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:14:08,817 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:14:08,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:14:08,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:14:06" (1/4) ... [2024-06-28 01:14:08,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d195e63 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:14:08, skipping insertion in model container [2024-06-28 01:14:08,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:14:07" (2/4) ... [2024-06-28 01:14:08,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d195e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:14:08, skipping insertion in model container [2024-06-28 01:14:08,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:14:08" (3/4) ... [2024-06-28 01:14:08,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d195e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:14:08, skipping insertion in model container [2024-06-28 01:14:08,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:14:08" (4/4) ... [2024-06-28 01:14:08,824 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-06-28 01:14:08,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:14:08,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:14:08,838 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:14:08,878 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-28 01:14:08,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 101 flow [2024-06-28 01:14:08,922 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-06-28 01:14:08,922 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-28 01:14:08,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 1/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-28 01:14:08,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 101 flow [2024-06-28 01:14:08,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 85 flow [2024-06-28 01:14:08,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:14:08,939 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;@5dd61c9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:14:08,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 01:14:08,942 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:14:08,942 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:14:08,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:14:08,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:14:08,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:14:08,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 01:14:08,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:14:08,947 INFO L85 PathProgramCache]: Analyzing trace with hash 212270178, now seen corresponding path program 1 times [2024-06-28 01:14:08,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:14:08,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884187095] [2024-06-28 01:14:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:14:08,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:14:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:14:09,201 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 01:14:09,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:14:09,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884187095] [2024-06-28 01:14:09,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884187095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:14:09,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:14:09,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:14:09,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258611675] [2024-06-28 01:14:09,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:14:09,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:14:09,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:14:09,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:14:09,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:14:09,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 01:14:09,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 01:14:09,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:14:09,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 01:14:09,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:14:09,522 INFO L124 PetriNetUnfolderBase]: 910/1493 cut-off events. [2024-06-28 01:14:09,522 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-06-28 01:14:09,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 1493 events. 910/1493 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7932 event pairs, 350 based on Foata normal form. 89/1541 useless extension candidates. Maximal degree in co-relation 2802. Up to 1296 conditions per place. [2024-06-28 01:14:09,535 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 37 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-06-28 01:14:09,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 197 flow [2024-06-28 01:14:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:14:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:14:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-28 01:14:09,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-28 01:14:09,547 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 85 flow. Second operand 3 states and 78 transitions. [2024-06-28 01:14:09,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 197 flow [2024-06-28 01:14:09,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 185 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:14:09,555 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 99 flow [2024-06-28 01:14:09,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-06-28 01:14:09,559 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2024-06-28 01:14:09,560 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 99 flow [2024-06-28 01:14:09,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 01:14:09,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:14:09,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:14:09,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:14:09,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 01:14:09,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:14:09,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1576292686, now seen corresponding path program 1 times [2024-06-28 01:14:09,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:14:09,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055090517] [2024-06-28 01:14:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:14:09,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:14:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:14:09,636 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 01:14:09,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:14:09,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055090517] [2024-06-28 01:14:09,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055090517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:14:09,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:14:09,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:14:09,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315670828] [2024-06-28 01:14:09,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:14:09,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:14:09,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:14:09,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:14:09,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:14:09,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 01:14:09,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 01:14:09,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:14:09,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 01:14:09,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:14:09,781 INFO L124 PetriNetUnfolderBase]: 632/1065 cut-off events. [2024-06-28 01:14:09,782 INFO L125 PetriNetUnfolderBase]: For 220/230 co-relation queries the response was YES. [2024-06-28 01:14:09,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 1065 events. 632/1065 cut-off events. For 220/230 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5422 event pairs, 189 based on Foata normal form. 132/1180 useless extension candidates. Maximal degree in co-relation 1170. Up to 888 conditions per place. [2024-06-28 01:14:09,786 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 30 selfloop transitions, 3 changer transitions 4/45 dead transitions. [2024-06-28 01:14:09,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 188 flow [2024-06-28 01:14:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:14:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:14:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-06-28 01:14:09,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 01:14:09,787 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 99 flow. Second operand 4 states and 84 transitions. [2024-06-28 01:14:09,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 188 flow [2024-06-28 01:14:09,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:14:09,789 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 86 flow [2024-06-28 01:14:09,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-28 01:14:09,790 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2024-06-28 01:14:09,790 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 86 flow [2024-06-28 01:14:09,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 01:14:09,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:14:09,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:14:09,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:14:09,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 01:14:09,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:14:09,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1916493132, now seen corresponding path program 1 times [2024-06-28 01:14:09,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:14:09,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098673991] [2024-06-28 01:14:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:14:09,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:14:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:14:09,859 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 01:14:09,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:14:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098673991] [2024-06-28 01:14:09,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098673991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:14:09,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:14:09,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:14:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383624050] [2024-06-28 01:14:09,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:14:09,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:14:09,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:14:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:14:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:14:09,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-28 01:14:09,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 01:14:09,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:14:09,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-28 01:14:09,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:14:09,923 INFO L124 PetriNetUnfolderBase]: 162/411 cut-off events. [2024-06-28 01:14:09,923 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-06-28 01:14:09,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 411 events. 162/411 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1906 event pairs, 50 based on Foata normal form. 59/468 useless extension candidates. Maximal degree in co-relation 448. Up to 192 conditions per place. [2024-06-28 01:14:09,925 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 28 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2024-06-28 01:14:09,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 179 flow [2024-06-28 01:14:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:14:09,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:14:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-28 01:14:09,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-06-28 01:14:09,929 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 86 flow. Second operand 3 states and 79 transitions. [2024-06-28 01:14:09,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 179 flow [2024-06-28 01:14:09,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:14:09,931 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 92 flow [2024-06-28 01:14:09,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-28 01:14:09,932 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-06-28 01:14:09,933 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 92 flow [2024-06-28 01:14:09,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 01:14:09,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:14:09,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:14:09,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:14:09,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 01:14:09,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:14:09,935 INFO L85 PathProgramCache]: Analyzing trace with hash -782855584, now seen corresponding path program 1 times [2024-06-28 01:14:09,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:14:09,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527624399] [2024-06-28 01:14:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:14:09,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:14:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:14:10,007 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 01:14:10,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:14:10,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527624399] [2024-06-28 01:14:10,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527624399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:14:10,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:14:10,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:14:10,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348929891] [2024-06-28 01:14:10,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:14:10,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:14:10,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:14:10,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:14:10,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:14:10,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 01:14:10,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 01:14:10,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:14:10,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 01:14:10,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:14:10,087 INFO L124 PetriNetUnfolderBase]: 182/409 cut-off events. [2024-06-28 01:14:10,087 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-06-28 01:14:10,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 409 events. 182/409 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1765 event pairs, 47 based on Foata normal form. 5/413 useless extension candidates. Maximal degree in co-relation 321. Up to 230 conditions per place. [2024-06-28 01:14:10,089 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 35 selfloop transitions, 4 changer transitions 2/49 dead transitions. [2024-06-28 01:14:10,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 49 transitions, 226 flow [2024-06-28 01:14:10,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:14:10,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:14:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-06-28 01:14:10,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-28 01:14:10,090 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 92 flow. Second operand 4 states and 86 transitions. [2024-06-28 01:14:10,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 49 transitions, 226 flow [2024-06-28 01:14:10,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:14:10,092 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 99 flow [2024-06-28 01:14:10,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-06-28 01:14:10,093 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2024-06-28 01:14:10,093 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 99 flow [2024-06-28 01:14:10,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 01:14:10,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:14:10,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:14:10,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:14:10,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 01:14:10,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:14:10,094 INFO L85 PathProgramCache]: Analyzing trace with hash 520851330, now seen corresponding path program 1 times [2024-06-28 01:14:10,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:14:10,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831235775] [2024-06-28 01:14:10,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:14:10,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:14:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:14:10,129 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 01:14:10,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:14:10,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831235775] [2024-06-28 01:14:10,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831235775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:14:10,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:14:10,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:14:10,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214185161] [2024-06-28 01:14:10,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:14:10,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:14:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:14:10,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:14:10,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:14:10,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 01:14:10,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 01:14:10,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:14:10,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 01:14:10,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:14:10,201 INFO L124 PetriNetUnfolderBase]: 204/427 cut-off events. [2024-06-28 01:14:10,201 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-06-28 01:14:10,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 427 events. 204/427 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1771 event pairs, 52 based on Foata normal form. 4/429 useless extension candidates. Maximal degree in co-relation 383. Up to 184 conditions per place. [2024-06-28 01:14:10,203 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 36 selfloop transitions, 5 changer transitions 6/54 dead transitions. [2024-06-28 01:14:10,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 252 flow [2024-06-28 01:14:10,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:14:10,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:14:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-06-28 01:14:10,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 01:14:10,204 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 99 flow. Second operand 4 states and 88 transitions. [2024-06-28 01:14:10,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 252 flow [2024-06-28 01:14:10,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:14:10,206 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 105 flow [2024-06-28 01:14:10,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2024-06-28 01:14:10,206 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-06-28 01:14:10,207 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 105 flow [2024-06-28 01:14:10,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 01:14:10,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:14:10,207 INFO L208 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] [2024-06-28 01:14:10,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:14:10,207 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 01:14:10,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:14:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash -444400188, now seen corresponding path program 1 times [2024-06-28 01:14:10,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:14:10,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568696320] [2024-06-28 01:14:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:14:10,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:14:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-28 01:14:10,221 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-28 01:14:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-28 01:14:10,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-28 01:14:10,244 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-28 01:14:10,245 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2024-06-28 01:14:10,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2024-06-28 01:14:10,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-28 01:14:10,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-28 01:14:10,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 8 remaining) [2024-06-28 01:14:10,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-28 01:14:10,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-28 01:14:10,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-28 01:14:10,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:14:10,247 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-06-28 01:14:10,251 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 01:14:10,252 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 01:14:10,274 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-28 01:14:10,274 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-28 01:14:10,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 01:14:10 BasicIcfg [2024-06-28 01:14:10,274 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 01:14:10,275 INFO L158 Benchmark]: Toolchain (without parser) took 2535.29ms. Allocated memory was 130.0MB in the beginning and 180.4MB in the end (delta: 50.3MB). Free memory was 69.0MB in the beginning and 88.7MB in the end (delta: -19.6MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2024-06-28 01:14:10,275 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 130.0MB. Free memory was 93.0MB in the beginning and 92.9MB in the end (delta: 87.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:14:10,275 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:14:10,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 526.91ms. Allocated memory is still 130.0MB. Free memory was 68.8MB in the beginning and 93.3MB in the end (delta: -24.5MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2024-06-28 01:14:10,276 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.14ms. Allocated memory is still 130.0MB. Free memory was 93.3MB in the beginning and 91.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:14:10,276 INFO L158 Benchmark]: Boogie Preprocessor took 62.65ms. Allocated memory is still 130.0MB. Free memory was 91.4MB in the beginning and 89.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:14:10,277 INFO L158 Benchmark]: RCFGBuilder took 434.18ms. Allocated memory is still 130.0MB. Free memory was 89.1MB in the beginning and 64.7MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-28 01:14:10,277 INFO L158 Benchmark]: TraceAbstraction took 1458.12ms. Allocated memory was 130.0MB in the beginning and 180.4MB in the end (delta: 50.3MB). Free memory was 63.9MB in the beginning and 88.7MB in the end (delta: -24.7MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2024-06-28 01:14:10,279 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 130.0MB. Free memory was 93.0MB in the beginning and 92.9MB in the end (delta: 87.0kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 526.91ms. Allocated memory is still 130.0MB. Free memory was 68.8MB in the beginning and 93.3MB in the end (delta: -24.5MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.14ms. Allocated memory is still 130.0MB. Free memory was 93.3MB in the beginning and 91.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.65ms. Allocated memory is still 130.0MB. Free memory was 91.4MB in the beginning and 89.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 434.18ms. Allocated memory is still 130.0MB. Free memory was 89.1MB in the beginning and 64.7MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1458.12ms. Allocated memory was 130.0MB in the beginning and 180.4MB in the end (delta: 50.3MB). Free memory was 63.9MB in the beginning and 88.7MB in the end (delta: -24.7MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int mutex_locked = 0; [L1] 0 //@ ghost int multithreaded = 0; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] 0 //@ ghost multithreaded = 1; VAL [data=0, mutex={3:0}, t1=-2] [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, data=0, mutex={3:0}, t1=-2] [L706] 1 //@ ghost mutex_locked = 1; [L733] 0 //@ assert ((!multithreaded || (mutex_locked || (0 <= data))) && (!multithreaded || (0 <= data))); [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-2, t2=-1] [L734] 0 //@ assert ((!multithreaded || (mutex_locked || (0 <= data))) && (!multithreaded || (0 <= data))); [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-2, t2=-1, t3=0] [L707] 1 data++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L708] 1 //@ ghost mutex_locked = 0; [L713] 2 //@ ghost mutex_locked = 1; [L714] 2 data+=2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L715] 2 //@ ghost mutex_locked = 0; [L720] 3 //@ ghost mutex_locked = 1; [L721] COND TRUE 3 data >= 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 reach_error() VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 733]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 735]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: 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: 733]: 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: 734]: 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 7 procedures, 64 locations, 8 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: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 132 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 102 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 302 IncrementalHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 8 mSDtfsCounter, 302 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=5, InterpolantAutomatonStates: 18, 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, 0.3s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 01:14:10,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE