./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/read_write_lock-1-pthread.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-atomic/read_write_lock-1-pthread.i ./goblint.2024-06-19_11-23-25.files/protection/read_write_lock-1-pthread.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 [2024-06-27 17:48:18,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:48:18,104 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:48:18,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:48:18,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:48:18,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:48:18,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:48:18,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:48:18,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:48:18,136 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:48:18,136 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:48:18,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:48:18,137 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:48:18,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:48:18,139 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:48:18,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:48:18,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:48:18,139 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:48:18,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:48:18,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:48:18,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:48:18,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:48:18,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:48:18,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:48:18,141 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:48:18,141 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:48:18,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:48:18,141 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:48:18,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:48:18,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:48:18,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:48:18,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:48:18,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:48:18,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:48:18,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:48:18,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:48:18,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:48:18,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:48:18,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:48:18,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:48:18,151 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:48:18,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:48:18,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:48:18,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 17:48:18,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:48:18,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:48:18,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:48:18,438 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 17:48:18,440 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 17:48:18,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/read_write_lock-1-pthread.yml/witness.yml [2024-06-27 17:48:18,553 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:48:18,554 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:48:18,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-06-27 17:48:19,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:48:19,818 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:48:19,819 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-06-27 17:48:19,835 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452912c69/e25f363677214c858b61a8fe2e3504ab/FLAG29cd8e4db [2024-06-27 17:48:20,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452912c69/e25f363677214c858b61a8fe2e3504ab [2024-06-27 17:48:20,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:48:20,173 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 17:48:20,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:48:20,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:48:20,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:48:20,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:48:18" (1/2) ... [2024-06-27 17:48:20,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3449902f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:48:20, skipping insertion in model container [2024-06-27 17:48:20,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:48:18" (1/2) ... [2024-06-27 17:48:20,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69e96f82 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:48:20, skipping insertion in model container [2024-06-27 17:48:20,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:48:20" (2/2) ... [2024-06-27 17:48:20,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3449902f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20, skipping insertion in model container [2024-06-27 17:48:20,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:48:20" (2/2) ... [2024-06-27 17:48:20,181 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 17:48:20,221 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 17:48:20,222 INFO L97 edCorrectnessWitness]: Location invariant before [L718-L718] (! multithreaded || (y == 0 || y == 3)) && (! multithreaded || (x == 0 || x == 3)) [2024-06-27 17:48:20,222 INFO L97 edCorrectnessWitness]: Location invariant before [L719-L719] (! multithreaded || (y == 0 || y == 3)) && (! multithreaded || (x == 0 || x == 3)) [2024-06-27 17:48:20,222 INFO L97 edCorrectnessWitness]: Location invariant before [L717-L717] (! multithreaded || (y == 0 || y == 3)) && (! multithreaded || (x == 0 || x == 3)) [2024-06-27 17:48:20,222 INFO L97 edCorrectnessWitness]: Location invariant before [L720-L720] (! multithreaded || (y == 0 || y == 3)) && (! multithreaded || (x == 0 || x == 3)) [2024-06-27 17:48:20,222 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 17:48:20,222 INFO L103 edCorrectnessWitness]: ghost_variable rwlock_locked = 0 [2024-06-27 17:48:20,222 INFO L106 edCorrectnessWitness]: ghost_update [L711-L711] rwlock_locked = 0; [2024-06-27 17:48:20,222 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] rwlock_locked = 1; [2024-06-27 17:48:20,222 INFO L106 edCorrectnessWitness]: ghost_update [L716-L716] multithreaded = 1; [2024-06-27 17:48:20,222 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] rwlock_locked = 1; [2024-06-27 17:48:20,222 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] rwlock_locked = 0; [2024-06-27 17:48:20,260 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:48:20,474 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-atomic/read_write_lock-1-pthread.i[30919,30932] [2024-06-27 17:48:20,481 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:48:20,493 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 17:48:20,568 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-atomic/read_write_lock-1-pthread.i[30919,30932] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 17:48:20,587 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:48:20,619 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:48:20,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20 WrapperNode [2024-06-27 17:48:20,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:48:20,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:48:20,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:48:20,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:48:20,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,650 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2024-06-27 17:48:20,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:48:20,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:48:20,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:48:20,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:48:20,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,663 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,673 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 11]. The 0 writes are split as follows [0, 0]. [2024-06-27 17:48:20,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,684 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,686 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:48:20,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:48:20,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:48:20,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:48:20,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (1/1) ... [2024-06-27 17:48:20,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:48:20,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:48:20,755 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) [2024-06-27 17:48:20,756 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 [2024-06-27 17:48:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2024-06-27 17:48:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2024-06-27 17:48:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:48:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:48:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-06-27 17:48:20,783 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-06-27 17:48:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2024-06-27 17:48:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:48:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 17:48:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:48:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:48:20,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:48:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-06-27 17:48:20,784 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-06-27 17:48:20,785 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:48:20,894 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:48:20,895 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:48:21,023 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:48:21,023 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:48:21,125 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:48:21,126 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 17:48:21,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:48:21 BoogieIcfgContainer [2024-06-27 17:48:21,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:48:21,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:48:21,128 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:48:21,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:48:21,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:48:18" (1/4) ... [2024-06-27 17:48:21,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53283dbc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 05:48:21, skipping insertion in model container [2024-06-27 17:48:21,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:48:20" (2/4) ... [2024-06-27 17:48:21,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53283dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:48:21, skipping insertion in model container [2024-06-27 17:48:21,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:48:20" (3/4) ... [2024-06-27 17:48:21,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53283dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:48:21, skipping insertion in model container [2024-06-27 17:48:21,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:48:21" (4/4) ... [2024-06-27 17:48:21,134 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2024-06-27 17:48:21,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:48:21,149 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 17:48:21,149 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:48:21,204 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 17:48:21,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 63 transitions, 154 flow [2024-06-27 17:48:21,269 INFO L124 PetriNetUnfolderBase]: 2/59 cut-off events. [2024-06-27 17:48:21,271 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 17:48:21,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 59 events. 2/59 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-06-27 17:48:21,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 63 transitions, 154 flow [2024-06-27 17:48:21,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 57 transitions, 135 flow [2024-06-27 17:48:21,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:48:21,297 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;@7ec13e00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:48:21,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 17:48:21,302 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:48:21,303 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 17:48:21,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:48:21,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:21,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 17:48:21,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 17:48:21,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:21,312 INFO L85 PathProgramCache]: Analyzing trace with hash 220224404, now seen corresponding path program 1 times [2024-06-27 17:48:21,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:21,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716290933] [2024-06-27 17:48:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:21,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:21,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716290933] [2024-06-27 17:48:21,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716290933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:21,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:48:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 17:48:21,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898003677] [2024-06-27 17:48:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:21,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:48:21,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:21,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:48:21,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:48:21,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2024-06-27 17:48:21,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-06-27 17:48:21,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:21,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2024-06-27 17:48:21,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:22,814 INFO L124 PetriNetUnfolderBase]: 9897/14791 cut-off events. [2024-06-27 17:48:22,815 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-06-27 17:48:22,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28883 conditions, 14791 events. 9897/14791 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 94629 event pairs, 4524 based on Foata normal form. 722/14644 useless extension candidates. Maximal degree in co-relation 27226. Up to 13149 conditions per place. [2024-06-27 17:48:22,901 INFO L140 encePairwiseOnDemand]: 52/63 looper letters, 52 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2024-06-27 17:48:22,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 294 flow [2024-06-27 17:48:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:48:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:48:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-06-27 17:48:22,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-06-27 17:48:22,913 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 135 flow. Second operand 3 states and 129 transitions. [2024-06-27 17:48:22,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 294 flow [2024-06-27 17:48:22,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 17:48:22,933 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 157 flow [2024-06-27 17:48:22,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-27 17:48:22,937 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-06-27 17:48:22,937 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 157 flow [2024-06-27 17:48:22,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-06-27 17:48:22,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:22,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:48:22,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:48:22,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 17:48:22,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:22,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1937398355, now seen corresponding path program 1 times [2024-06-27 17:48:22,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:22,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683587387] [2024-06-27 17:48:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:22,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:23,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:23,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683587387] [2024-06-27 17:48:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683587387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:23,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:48:23,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:48:23,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616015299] [2024-06-27 17:48:23,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:23,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:48:23,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:48:23,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:48:23,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2024-06-27 17:48:23,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-06-27 17:48:23,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:23,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2024-06-27 17:48:23,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:23,989 INFO L124 PetriNetUnfolderBase]: 9055/15400 cut-off events. [2024-06-27 17:48:23,989 INFO L125 PetriNetUnfolderBase]: For 2257/2416 co-relation queries the response was YES. [2024-06-27 17:48:24,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31256 conditions, 15400 events. 9055/15400 cut-off events. For 2257/2416 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 115202 event pairs, 1831 based on Foata normal form. 304/14844 useless extension candidates. Maximal degree in co-relation 11761. Up to 9832 conditions per place. [2024-06-27 17:48:24,068 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 71 selfloop transitions, 7 changer transitions 0/96 dead transitions. [2024-06-27 17:48:24,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 96 transitions, 401 flow [2024-06-27 17:48:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:48:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:48:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-06-27 17:48:24,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-06-27 17:48:24,075 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 157 flow. Second operand 4 states and 170 transitions. [2024-06-27 17:48:24,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 96 transitions, 401 flow [2024-06-27 17:48:24,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 17:48:24,079 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 184 flow [2024-06-27 17:48:24,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-06-27 17:48:24,084 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2024-06-27 17:48:24,084 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 184 flow [2024-06-27 17:48:24,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-06-27 17:48:24,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:24,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:48:24,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:48:24,085 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 17:48:24,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:24,085 INFO L85 PathProgramCache]: Analyzing trace with hash 240877432, now seen corresponding path program 1 times [2024-06-27 17:48:24,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:24,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894167928] [2024-06-27 17:48:24,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:24,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:24,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:24,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894167928] [2024-06-27 17:48:24,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894167928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:24,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:48:24,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:48:24,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331347328] [2024-06-27 17:48:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:24,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:48:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:24,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:48:24,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:48:24,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-06-27 17:48:24,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-06-27 17:48:24,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:24,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-06-27 17:48:24,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:25,308 INFO L124 PetriNetUnfolderBase]: 10595/16630 cut-off events. [2024-06-27 17:48:25,309 INFO L125 PetriNetUnfolderBase]: For 5995/6265 co-relation queries the response was YES. [2024-06-27 17:48:25,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37051 conditions, 16630 events. 10595/16630 cut-off events. For 5995/6265 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 113479 event pairs, 4182 based on Foata normal form. 174/16036 useless extension candidates. Maximal degree in co-relation 14805. Up to 12476 conditions per place. [2024-06-27 17:48:25,393 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 86 selfloop transitions, 17 changer transitions 0/120 dead transitions. [2024-06-27 17:48:25,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 120 transitions, 559 flow [2024-06-27 17:48:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:48:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:48:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-06-27 17:48:25,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005291005291006 [2024-06-27 17:48:25,395 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 184 flow. Second operand 6 states and 227 transitions. [2024-06-27 17:48:25,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 120 transitions, 559 flow [2024-06-27 17:48:25,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 120 transitions, 545 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:48:25,398 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 294 flow [2024-06-27 17:48:25,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-27 17:48:25,399 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 3 predicate places. [2024-06-27 17:48:25,399 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 294 flow [2024-06-27 17:48:25,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-06-27 17:48:25,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:25,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:48:25,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:48:25,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 17:48:25,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2026142517, now seen corresponding path program 1 times [2024-06-27 17:48:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:25,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765881012] [2024-06-27 17:48:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:25,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:25,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765881012] [2024-06-27 17:48:25,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765881012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:25,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:48:25,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:48:25,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029666841] [2024-06-27 17:48:25,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:25,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:48:25,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:25,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:48:25,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:48:25,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-06-27 17:48:25,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-06-27 17:48:25,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:25,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-06-27 17:48:25,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:28,196 INFO L124 PetriNetUnfolderBase]: 29330/45366 cut-off events. [2024-06-27 17:48:28,197 INFO L125 PetriNetUnfolderBase]: For 22850/24161 co-relation queries the response was YES. [2024-06-27 17:48:28,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105412 conditions, 45366 events. 29330/45366 cut-off events. For 22850/24161 co-relation queries the response was YES. Maximal size of possible extension queue 1883. Compared 351450 event pairs, 4368 based on Foata normal form. 128/42646 useless extension candidates. Maximal degree in co-relation 88123. Up to 13239 conditions per place. [2024-06-27 17:48:28,467 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 198 selfloop transitions, 52 changer transitions 0/266 dead transitions. [2024-06-27 17:48:28,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 266 transitions, 1381 flow [2024-06-27 17:48:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:48:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:48:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 457 transitions. [2024-06-27 17:48:28,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6594516594516594 [2024-06-27 17:48:28,469 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 294 flow. Second operand 11 states and 457 transitions. [2024-06-27 17:48:28,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 266 transitions, 1381 flow [2024-06-27 17:48:28,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 266 transitions, 1375 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-27 17:48:28,508 INFO L231 Difference]: Finished difference. Result has 89 places, 112 transitions, 760 flow [2024-06-27 17:48:28,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=760, PETRI_PLACES=89, PETRI_TRANSITIONS=112} [2024-06-27 17:48:28,509 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2024-06-27 17:48:28,509 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 112 transitions, 760 flow [2024-06-27 17:48:28,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-06-27 17:48:28,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:28,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:48:28,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:48:28,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 17:48:28,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:28,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2060072077, now seen corresponding path program 1 times [2024-06-27 17:48:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:28,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964060168] [2024-06-27 17:48:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:28,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:28,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:28,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964060168] [2024-06-27 17:48:28,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964060168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:28,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:48:28,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:48:28,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441355664] [2024-06-27 17:48:28,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:28,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:48:28,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:28,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:48:28,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:48:28,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-06-27 17:48:28,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 112 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-06-27 17:48:28,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:28,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-06-27 17:48:28,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:28,823 INFO L124 PetriNetUnfolderBase]: 1052/2634 cut-off events. [2024-06-27 17:48:28,824 INFO L125 PetriNetUnfolderBase]: For 4628/5225 co-relation queries the response was YES. [2024-06-27 17:48:28,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8260 conditions, 2634 events. 1052/2634 cut-off events. For 4628/5225 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 21209 event pairs, 178 based on Foata normal form. 1165/3623 useless extension candidates. Maximal degree in co-relation 7257. Up to 1336 conditions per place. [2024-06-27 17:48:28,838 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 51 selfloop transitions, 2 changer transitions 3/101 dead transitions. [2024-06-27 17:48:28,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 717 flow [2024-06-27 17:48:28,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:48:28,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:48:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-06-27 17:48:28,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6878306878306878 [2024-06-27 17:48:28,840 INFO L175 Difference]: Start difference. First operand has 89 places, 112 transitions, 760 flow. Second operand 3 states and 130 transitions. [2024-06-27 17:48:28,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 717 flow [2024-06-27 17:48:28,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 101 transitions, 706 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 17:48:28,859 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 576 flow [2024-06-27 17:48:28,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2024-06-27 17:48:28,859 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2024-06-27 17:48:28,860 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 576 flow [2024-06-27 17:48:28,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-06-27 17:48:28,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:28,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:48:28,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:48:28,861 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 17:48:28,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:28,861 INFO L85 PathProgramCache]: Analyzing trace with hash -85165901, now seen corresponding path program 2 times [2024-06-27 17:48:28,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:28,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215340131] [2024-06-27 17:48:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:28,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:29,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:29,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215340131] [2024-06-27 17:48:29,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215340131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:29,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:48:29,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:48:29,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922048932] [2024-06-27 17:48:29,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:29,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:48:29,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:29,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:48:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:48:29,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-06-27 17:48:29,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-06-27 17:48:29,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:29,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-06-27 17:48:29,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:29,094 INFO L124 PetriNetUnfolderBase]: 140/447 cut-off events. [2024-06-27 17:48:29,094 INFO L125 PetriNetUnfolderBase]: For 594/603 co-relation queries the response was YES. [2024-06-27 17:48:29,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 447 events. 140/447 cut-off events. For 594/603 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2398 event pairs, 11 based on Foata normal form. 60/490 useless extension candidates. Maximal degree in co-relation 1157. Up to 215 conditions per place. [2024-06-27 17:48:29,096 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 25 selfloop transitions, 2 changer transitions 7/65 dead transitions. [2024-06-27 17:48:29,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 65 transitions, 352 flow [2024-06-27 17:48:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:48:29,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:48:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-06-27 17:48:29,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6455026455026455 [2024-06-27 17:48:29,098 INFO L175 Difference]: Start difference. First operand has 84 places, 87 transitions, 576 flow. Second operand 3 states and 122 transitions. [2024-06-27 17:48:29,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 65 transitions, 352 flow [2024-06-27 17:48:29,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 311 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 17:48:29,103 INFO L231 Difference]: Finished difference. Result has 72 places, 49 transitions, 203 flow [2024-06-27 17:48:29,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=72, PETRI_TRANSITIONS=49} [2024-06-27 17:48:29,104 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2024-06-27 17:48:29,104 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 49 transitions, 203 flow [2024-06-27 17:48:29,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-06-27 17:48:29,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:29,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:48:29,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:48:29,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 17:48:29,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash 728874697, now seen corresponding path program 1 times [2024-06-27 17:48:29,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:29,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291891111] [2024-06-27 17:48:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:29,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:29,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:29,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291891111] [2024-06-27 17:48:29,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291891111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:29,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:48:29,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:48:29,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446693733] [2024-06-27 17:48:29,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:29,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:48:29,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:29,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:48:29,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:48:29,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-06-27 17:48:29,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 49 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-06-27 17:48:29,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:29,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-06-27 17:48:29,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:29,224 INFO L124 PetriNetUnfolderBase]: 67/286 cut-off events. [2024-06-27 17:48:29,225 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-06-27 17:48:29,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 286 events. 67/286 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1409 event pairs, 26 based on Foata normal form. 7/277 useless extension candidates. Maximal degree in co-relation 648. Up to 68 conditions per place. [2024-06-27 17:48:29,226 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 32 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2024-06-27 17:48:29,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 63 transitions, 320 flow [2024-06-27 17:48:29,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:48:29,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:48:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-27 17:48:29,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 17:48:29,227 INFO L175 Difference]: Start difference. First operand has 72 places, 49 transitions, 203 flow. Second operand 6 states and 162 transitions. [2024-06-27 17:48:29,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 63 transitions, 320 flow [2024-06-27 17:48:29,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 298 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 17:48:29,229 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 201 flow [2024-06-27 17:48:29,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2024-06-27 17:48:29,230 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-06-27 17:48:29,230 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 201 flow [2024-06-27 17:48:29,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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) [2024-06-27 17:48:29,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:29,230 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] [2024-06-27 17:48:29,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 17:48:29,231 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 17:48:29,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:29,231 INFO L85 PathProgramCache]: Analyzing trace with hash 536158461, now seen corresponding path program 1 times [2024-06-27 17:48:29,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:29,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251223373] [2024-06-27 17:48:29,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:29,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:29,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:29,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251223373] [2024-06-27 17:48:29,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251223373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:29,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:48:29,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:48:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089975549] [2024-06-27 17:48:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:29,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:48:29,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:48:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:48:29,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-06-27 17:48:29,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2024-06-27 17:48:29,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:29,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-06-27 17:48:29,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:29,453 INFO L124 PetriNetUnfolderBase]: 111/336 cut-off events. [2024-06-27 17:48:29,453 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2024-06-27 17:48:29,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 336 events. 111/336 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1503 event pairs, 26 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 846. Up to 68 conditions per place. [2024-06-27 17:48:29,455 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 42 selfloop transitions, 9 changer transitions 11/79 dead transitions. [2024-06-27 17:48:29,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 404 flow [2024-06-27 17:48:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:48:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:48:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-27 17:48:29,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-27 17:48:29,456 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 201 flow. Second operand 10 states and 267 transitions. [2024-06-27 17:48:29,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 79 transitions, 404 flow [2024-06-27 17:48:29,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 79 transitions, 396 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 17:48:29,459 INFO L231 Difference]: Finished difference. Result has 80 places, 49 transitions, 217 flow [2024-06-27 17:48:29,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=217, PETRI_PLACES=80, PETRI_TRANSITIONS=49} [2024-06-27 17:48:29,459 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2024-06-27 17:48:29,459 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 49 transitions, 217 flow [2024-06-27 17:48:29,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2024-06-27 17:48:29,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:29,460 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, 1, 1, 1, 1] [2024-06-27 17:48:29,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 17:48:29,460 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 17:48:29,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:29,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1912950782, now seen corresponding path program 1 times [2024-06-27 17:48:29,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:29,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833111725] [2024-06-27 17:48:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:29,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:29,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:29,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833111725] [2024-06-27 17:48:29,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833111725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:29,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:48:29,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:48:29,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981928754] [2024-06-27 17:48:29,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:29,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:48:29,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:29,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:48:29,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:48:29,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-06-27 17:48:29,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 49 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-06-27 17:48:29,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:29,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-06-27 17:48:29,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:29,681 INFO L124 PetriNetUnfolderBase]: 117/302 cut-off events. [2024-06-27 17:48:29,681 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2024-06-27 17:48:29,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 302 events. 117/302 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1227 event pairs, 26 based on Foata normal form. 2/302 useless extension candidates. Maximal degree in co-relation 856. Up to 76 conditions per place. [2024-06-27 17:48:29,683 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 26 selfloop transitions, 4 changer transitions 31/76 dead transitions. [2024-06-27 17:48:29,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 416 flow [2024-06-27 17:48:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:48:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:48:29,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-27 17:48:29,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43562610229276894 [2024-06-27 17:48:29,684 INFO L175 Difference]: Start difference. First operand has 80 places, 49 transitions, 217 flow. Second operand 9 states and 247 transitions. [2024-06-27 17:48:29,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 416 flow [2024-06-27 17:48:29,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 392 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 17:48:29,687 INFO L231 Difference]: Finished difference. Result has 73 places, 40 transitions, 156 flow [2024-06-27 17:48:29,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=73, PETRI_TRANSITIONS=40} [2024-06-27 17:48:29,687 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2024-06-27 17:48:29,687 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 40 transitions, 156 flow [2024-06-27 17:48:29,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-06-27 17:48:29,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:29,688 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, 1, 1, 1, 1] [2024-06-27 17:48:29,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 17:48:29,688 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 17:48:29,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash 545353800, now seen corresponding path program 1 times [2024-06-27 17:48:29,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:29,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69887628] [2024-06-27 17:48:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:29,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:29,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:29,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69887628] [2024-06-27 17:48:29,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69887628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:29,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:48:29,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:48:29,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391905997] [2024-06-27 17:48:29,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:29,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:48:29,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:29,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:48:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:48:29,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-06-27 17:48:29,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 40 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-06-27 17:48:29,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:29,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-06-27 17:48:29,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:29,856 INFO L124 PetriNetUnfolderBase]: 84/205 cut-off events. [2024-06-27 17:48:29,856 INFO L125 PetriNetUnfolderBase]: For 148/152 co-relation queries the response was YES. [2024-06-27 17:48:29,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 205 events. 84/205 cut-off events. For 148/152 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 642 event pairs, 26 based on Foata normal form. 6/210 useless extension candidates. Maximal degree in co-relation 547. Up to 68 conditions per place. [2024-06-27 17:48:29,857 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2024-06-27 17:48:29,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 61 transitions, 320 flow [2024-06-27 17:48:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:48:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:48:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 17:48:29,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42151675485008816 [2024-06-27 17:48:29,858 INFO L175 Difference]: Start difference. First operand has 73 places, 40 transitions, 156 flow. Second operand 9 states and 239 transitions. [2024-06-27 17:48:29,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 61 transitions, 320 flow [2024-06-27 17:48:29,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 288 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 17:48:29,860 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-06-27 17:48:29,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-06-27 17:48:29,860 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-06-27 17:48:29,860 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-06-27 17:48:29,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-06-27 17:48:29,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2024-06-27 17:48:29,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 11 remaining) [2024-06-27 17:48:29,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 11 remaining) [2024-06-27 17:48:29,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 11 remaining) [2024-06-27 17:48:29,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 11 remaining) [2024-06-27 17:48:29,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2024-06-27 17:48:29,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2024-06-27 17:48:29,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 11 remaining) [2024-06-27 17:48:29,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2024-06-27 17:48:29,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2024-06-27 17:48:29,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2024-06-27 17:48:29,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 17:48:29,865 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:48:29,868 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 17:48:29,868 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 17:48:29,871 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-27 17:48:29,871 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-27 17:48:29,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 05:48:29 BasicIcfg [2024-06-27 17:48:29,872 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 17:48:29,872 INFO L158 Benchmark]: Toolchain (without parser) took 9699.58ms. Allocated memory was 174.1MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 140.6MB in the beginning and 2.8GB in the end (delta: -2.7GB). Peak memory consumption was 632.3MB. Max. memory is 16.1GB. [2024-06-27 17:48:29,873 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 174.1MB. Free memory was 144.1MB in the beginning and 144.0MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:48:29,873 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 174.1MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:48:29,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.27ms. Allocated memory is still 174.1MB. Free memory was 140.6MB in the beginning and 113.7MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-27 17:48:29,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.50ms. Allocated memory is still 174.1MB. Free memory was 113.7MB in the beginning and 111.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:48:29,874 INFO L158 Benchmark]: Boogie Preprocessor took 35.04ms. Allocated memory is still 174.1MB. Free memory was 111.6MB in the beginning and 109.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:48:29,874 INFO L158 Benchmark]: RCFGBuilder took 440.07ms. Allocated memory is still 174.1MB. Free memory was 109.5MB in the beginning and 112.3MB in the end (delta: -2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 17:48:29,874 INFO L158 Benchmark]: TraceAbstraction took 8744.01ms. Allocated memory was 174.1MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 112.3MB in the beginning and 2.8GB in the end (delta: -2.7GB). Peak memory consumption was 606.2MB. Max. memory is 16.1GB. [2024-06-27 17:48:29,875 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 0.10ms. Allocated memory is still 174.1MB. Free memory was 144.1MB in the beginning and 144.0MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 174.1MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 446.27ms. Allocated memory is still 174.1MB. Free memory was 140.6MB in the beginning and 113.7MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.50ms. Allocated memory is still 174.1MB. Free memory was 113.7MB in the beginning and 111.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.04ms. Allocated memory is still 174.1MB. Free memory was 111.6MB in the beginning and 109.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 440.07ms. Allocated memory is still 174.1MB. Free memory was 109.5MB in the beginning and 112.3MB in the end (delta: -2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8744.01ms. Allocated memory was 174.1MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 112.3MB in the beginning and 2.8GB in the end (delta: -2.7GB). Peak memory consumption was 606.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 710]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 717]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 718]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 719]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 720]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 85 locations, 11 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: 8.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 838 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 688 mSDsluCounter, 166 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 113 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1917 IncrementalHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 53 mSDtfsCounter, 1917 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=760occurred in iteration=4, InterpolantAutomatonStates: 64, 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, 0.7s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 387 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 17:48:29,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE