./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/13-privatized_52-refine-protected-loop2-small_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/13-privatized_52-refine-protected-loop2-small_true.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-76401ed-m [2024-06-20 18:10:04,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 18:10:04,917 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 18:10:04,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 18:10:04,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 18:10:04,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 18:10:04,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 18:10:04,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 18:10:04,951 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 18:10:04,955 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 18:10:04,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 18:10:04,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 18:10:04,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 18:10:04,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 18:10:04,958 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 18:10:04,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 18:10:04,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 18:10:04,959 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 18:10:04,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 18:10:04,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 18:10:04,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 18:10:04,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 18:10:04,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 18:10:04,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 18:10:04,960 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 18:10:04,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 18:10:04,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 18:10:04,961 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 18:10:04,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 18:10:04,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 18:10:04,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 18:10:04,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 18:10:04,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:10:04,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 18:10:04,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 18:10:04,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 18:10:04,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 18:10:04,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 18:10:04,964 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 18:10:04,964 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 18:10:04,964 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 18:10:04,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 18:10:04,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 18:10:04,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 18:10:05,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 18:10:05,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 18:10:05,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 18:10:05,186 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 18:10:05,186 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 18:10:05,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2024-06-20 18:10:06,303 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 18:10:06,461 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 18:10:06,462 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2024-06-20 18:10:06,470 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36548f125/16760af466a94495ae6fa20c78a72c6a/FLAG8ecaf845c [2024-06-20 18:10:06,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36548f125/16760af466a94495ae6fa20c78a72c6a [2024-06-20 18:10:06,484 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 18:10:06,484 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 18:10:06,484 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/13-privatized_52-refine-protected-loop2-small_true.yml/witness.yml [2024-06-20 18:10:06,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 18:10:06,570 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 18:10:06,571 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 18:10:06,571 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 18:10:06,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 18:10:06,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:10:06" (1/2) ... [2024-06-20 18:10:06,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f837a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:10:06, skipping insertion in model container [2024-06-20 18:10:06,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:10:06" (1/2) ... [2024-06-20 18:10:06,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@41dbbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:10:06, skipping insertion in model container [2024-06-20 18:10:06,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:10:06" (2/2) ... [2024-06-20 18:10:06,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f837a5c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:06, skipping insertion in model container [2024-06-20 18:10:06,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:10:06" (2/2) ... [2024-06-20 18:10:06,578 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 18:10:06,598 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 18:10:06,599 INFO L97 edCorrectnessWitness]: Location invariant before [L703-L703] (! multithreaded || (((0 <= g && g <= 1000) && g <= 32767) && ((g == 0 || g == 999) || g == 1000))) && (! multithreaded || (A_locked || ((((0 <= g && g <= 999) && g <= 32767) && g % 999 == 0) && (g == 0 || g == 999)))) [2024-06-20 18:10:06,599 INFO L103 edCorrectnessWitness]: ghost_variable A_locked = 0 [2024-06-20 18:10:06,599 INFO L103 edCorrectnessWitness]: ghost_variable B_locked = 0 [2024-06-20 18:10:06,599 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 18:10:06,599 INFO L106 edCorrectnessWitness]: ghost_update [L702-L702] multithreaded = 1; [2024-06-20 18:10:06,600 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] A_locked = 0; [2024-06-20 18:10:06,600 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] A_locked = 1; [2024-06-20 18:10:06,601 INFO L106 edCorrectnessWitness]: ghost_update [L694-L694] B_locked = 1; [2024-06-20 18:10:06,601 INFO L106 edCorrectnessWitness]: ghost_update [L695-L695] B_locked = 0; [2024-06-20 18:10:06,639 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 18:10:06,940 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:10:06,950 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 18:10:07,049 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:10:07,085 INFO L206 MainTranslator]: Completed translation [2024-06-20 18:10:07,086 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07 WrapperNode [2024-06-20 18:10:07,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 18:10:07,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 18:10:07,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 18:10:07,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 18:10:07,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,135 INFO L138 Inliner]: procedures = 162, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2024-06-20 18:10:07,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 18:10:07,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 18:10:07,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 18:10:07,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 18:10:07,145 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,171 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-06-20 18:10:07,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,188 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 18:10:07,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 18:10:07,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 18:10:07,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 18:10:07,200 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (1/1) ... [2024-06-20 18:10:07,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:10:07,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 18:10:07,224 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) [2024-06-20 18:10:07,238 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 [2024-06-20 18:10:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-06-20 18:10:07,261 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-06-20 18:10:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-20 18:10:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 18:10:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 18:10:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-20 18:10:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-20 18:10:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-20 18:10:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 18:10:07,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 18:10:07,264 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 18:10:07,372 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 18:10:07,374 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 18:10:07,484 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 18:10:07,484 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 18:10:07,610 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 18:10:07,610 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-06-20 18:10:07,611 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:10:07 BoogieIcfgContainer [2024-06-20 18:10:07,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 18:10:07,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 18:10:07,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 18:10:07,615 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 18:10:07,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 06:10:06" (1/4) ... [2024-06-20 18:10:07,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2f134d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 06:10:07, skipping insertion in model container [2024-06-20 18:10:07,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:10:06" (2/4) ... [2024-06-20 18:10:07,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2f134d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:10:07, skipping insertion in model container [2024-06-20 18:10:07,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:10:07" (3/4) ... [2024-06-20 18:10:07,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2f134d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:10:07, skipping insertion in model container [2024-06-20 18:10:07,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:10:07" (4/4) ... [2024-06-20 18:10:07,617 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_52-refine-protected-loop2-small_true.i [2024-06-20 18:10:07,629 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 18:10:07,629 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-20 18:10:07,629 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 18:10:07,655 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 18:10:07,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 18 transitions, 40 flow [2024-06-20 18:10:07,708 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2024-06-20 18:10:07,714 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 18:10:07,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 17 events. 1/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 14 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-06-20 18:10:07,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 18 transitions, 40 flow [2024-06-20 18:10:07,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 17 transitions, 37 flow [2024-06-20 18:10:07,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 18:10:07,740 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;@17e3988b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 18:10:07,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-06-20 18:10:07,747 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 18:10:07,747 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 18:10:07,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 18:10:07,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:10:07,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 18:10:07,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-20 18:10:07,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:10:07,753 INFO L85 PathProgramCache]: Analyzing trace with hash 208738901, now seen corresponding path program 1 times [2024-06-20 18:10:07,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:10:07,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813519152] [2024-06-20 18:10:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:10:07,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:10:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:10:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:10:08,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:10:08,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813519152] [2024-06-20 18:10:08,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813519152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:10:08,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:10:08,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 18:10:08,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562503738] [2024-06-20 18:10:08,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:10:08,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 18:10:08,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:10:08,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 18:10:08,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 18:10:08,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 18 [2024-06-20 18:10:08,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-06-20 18:10:08,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:10:08,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 18 [2024-06-20 18:10:08,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:10:08,177 INFO L124 PetriNetUnfolderBase]: 20/62 cut-off events. [2024-06-20 18:10:08,177 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-20 18:10:08,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 62 events. 20/62 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 6 based on Foata normal form. 5/57 useless extension candidates. Maximal degree in co-relation 104. Up to 39 conditions per place. [2024-06-20 18:10:08,178 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 10 selfloop transitions, 2 changer transitions 2/20 dead transitions. [2024-06-20 18:10:08,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 20 transitions, 71 flow [2024-06-20 18:10:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 18:10:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 18:10:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2024-06-20 18:10:08,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-06-20 18:10:08,187 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 37 flow. Second operand 3 states and 38 transitions. [2024-06-20 18:10:08,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 20 transitions, 71 flow [2024-06-20 18:10:08,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 18:10:08,191 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 44 flow [2024-06-20 18:10:08,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2024-06-20 18:10:08,194 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 1 predicate places. [2024-06-20 18:10:08,194 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 44 flow [2024-06-20 18:10:08,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-06-20 18:10:08,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:10:08,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:10:08,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 18:10:08,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-20 18:10:08,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:10:08,195 INFO L85 PathProgramCache]: Analyzing trace with hash -281557827, now seen corresponding path program 1 times [2024-06-20 18:10:08,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:10:08,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414820360] [2024-06-20 18:10:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:10:08,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:10:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:10:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:10:08,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:10:08,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414820360] [2024-06-20 18:10:08,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414820360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:10:08,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:10:08,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 18:10:08,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322788333] [2024-06-20 18:10:08,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:10:08,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:10:08,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:10:08,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:10:08,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:10:08,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 18 [2024-06-20 18:10:08,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:10:08,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:10:08,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 18 [2024-06-20 18:10:08,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:10:08,356 INFO L124 PetriNetUnfolderBase]: 12/39 cut-off events. [2024-06-20 18:10:08,356 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-20 18:10:08,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 39 events. 12/39 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 5 based on Foata normal form. 1/35 useless extension candidates. Maximal degree in co-relation 77. Up to 18 conditions per place. [2024-06-20 18:10:08,357 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 8 selfloop transitions, 6 changer transitions 0/19 dead transitions. [2024-06-20 18:10:08,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 80 flow [2024-06-20 18:10:08,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 18:10:08,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 18:10:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 50 transitions. [2024-06-20 18:10:08,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-20 18:10:08,359 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 44 flow. Second operand 6 states and 50 transitions. [2024-06-20 18:10:08,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 80 flow [2024-06-20 18:10:08,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 19 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 18:10:08,360 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 59 flow [2024-06-20 18:10:08,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=59, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2024-06-20 18:10:08,360 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2024-06-20 18:10:08,361 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 59 flow [2024-06-20 18:10:08,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:10:08,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:10:08,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:10:08,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 18:10:08,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-20 18:10:08,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:10:08,362 INFO L85 PathProgramCache]: Analyzing trace with hash -137969648, now seen corresponding path program 1 times [2024-06-20 18:10:08,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:10:08,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571671102] [2024-06-20 18:10:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:10:08,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:10:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:10:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:10:08,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:10:08,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571671102] [2024-06-20 18:10:08,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571671102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:10:08,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:10:08,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 18:10:08,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949225685] [2024-06-20 18:10:08,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:10:08,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 18:10:08,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:10:08,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 18:10:08,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 18:10:08,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 18 [2024-06-20 18:10:08,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-06-20 18:10:08,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:10:08,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 18 [2024-06-20 18:10:08,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:10:08,527 INFO L124 PetriNetUnfolderBase]: 8/34 cut-off events. [2024-06-20 18:10:08,527 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-20 18:10:08,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 34 events. 8/34 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 29 event pairs, 1 based on Foata normal form. 4/37 useless extension candidates. Maximal degree in co-relation 68. Up to 17 conditions per place. [2024-06-20 18:10:08,529 INFO L140 encePairwiseOnDemand]: 16/18 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2024-06-20 18:10:08,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 17 transitions, 81 flow [2024-06-20 18:10:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 18:10:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 18:10:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2024-06-20 18:10:08,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-20 18:10:08,530 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 59 flow. Second operand 3 states and 33 transitions. [2024-06-20 18:10:08,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 17 transitions, 81 flow [2024-06-20 18:10:08,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-20 18:10:08,533 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2024-06-20 18:10:08,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2024-06-20 18:10:08,534 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2024-06-20 18:10:08,536 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2024-06-20 18:10:08,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-06-20 18:10:08,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-06-20 18:10:08,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-06-20 18:10:08,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 18:10:08,539 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-06-20 18:10:08,541 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 18:10:08,542 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 18:10:08,545 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-06-20 18:10:08,545 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-06-20 18:10:08,546 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 06:10:08 BasicIcfg [2024-06-20 18:10:08,546 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 18:10:08,547 INFO L158 Benchmark]: Toolchain (without parser) took 1976.85ms. Allocated memory was 136.3MB in the beginning and 201.3MB in the end (delta: 65.0MB). Free memory was 60.5MB in the beginning and 88.3MB in the end (delta: -27.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-06-20 18:10:08,549 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory was 89.3MB in the beginning and 89.2MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:10:08,549 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:10:08,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 516.21ms. Allocated memory was 136.3MB in the beginning and 201.3MB in the end (delta: 65.0MB). Free memory was 60.3MB in the beginning and 163.8MB in the end (delta: -103.4MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2024-06-20 18:10:08,551 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.67ms. Allocated memory is still 201.3MB. Free memory was 163.8MB in the beginning and 161.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 18:10:08,552 INFO L158 Benchmark]: Boogie Preprocessor took 61.56ms. Allocated memory is still 201.3MB. Free memory was 161.7MB in the beginning and 159.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 18:10:08,552 INFO L158 Benchmark]: RCFGBuilder took 412.58ms. Allocated memory is still 201.3MB. Free memory was 159.6MB in the beginning and 130.2MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-06-20 18:10:08,552 INFO L158 Benchmark]: TraceAbstraction took 933.67ms. Allocated memory is still 201.3MB. Free memory was 130.2MB in the beginning and 88.3MB in the end (delta: 42.0MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2024-06-20 18:10:08,555 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory was 89.3MB in the beginning and 89.2MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 516.21ms. Allocated memory was 136.3MB in the beginning and 201.3MB in the end (delta: 65.0MB). Free memory was 60.3MB in the beginning and 163.8MB in the end (delta: -103.4MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.67ms. Allocated memory is still 201.3MB. Free memory was 163.8MB in the beginning and 161.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.56ms. Allocated memory is still 201.3MB. Free memory was 161.7MB in the beginning and 159.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 412.58ms. Allocated memory is still 201.3MB. Free memory was 159.6MB in the beginning and 130.2MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 933.67ms. Allocated memory is still 201.3MB. Free memory was 130.2MB in the beginning and 88.3MB in the end (delta: 42.0MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 703]: 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 3 procedures, 30 locations, 2 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: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 1 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=2, InterpolantAutomatonStates: 12, 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, 0.4s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 53 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-20 18:10:08,578 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