./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c --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/protection/popl20-nonblocking-cntr.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/weaver/popl20-nonblocking-cntr.wvr.c ./goblint.2024-05-21_14-57-05.files/protection/popl20-nonblocking-cntr.wvr.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-bcb38a6-m [2024-06-03 19:01:49,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:01:49,200 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:01:49,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:01:49,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:01:49,327 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:01:49,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:01:49,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:01:49,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:01:49,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:01:49,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:01:49,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:01:49,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:01:49,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:01:49,329 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:01:49,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:01:49,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:01:49,330 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:01:49,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:01:49,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:01:49,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:01:49,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:01:49,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:01:49,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:01:49,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:01:49,332 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:01:49,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:01:49,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:01:49,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:01:49,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:01:49,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:01:49,333 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:01:49,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:01:49,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:01:49,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:01:49,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:01:49,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:01:49,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:01:49,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:01:49,335 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:01:49,335 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:01:49,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:01:49,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:01:49,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:01:49,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:01:49,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:01:49,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:01:49,559 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:01:49,559 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:01:49,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/popl20-nonblocking-cntr.wvr.yml/witness.yml [2024-06-03 19:01:49,644 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:01:49,644 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:01:49,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2024-06-03 19:01:50,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:01:50,773 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:01:50,774 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2024-06-03 19:01:50,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4ccca88/5e1643d12a7645bab2b0a281dd212b24/FLAG6e31e0144 [2024-06-03 19:01:50,800 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4ccca88/5e1643d12a7645bab2b0a281dd212b24 [2024-06-03 19:01:50,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:01:50,802 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:01:50,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:01:50,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:01:50,807 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:01:50,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:49" (1/2) ... [2024-06-03 19:01:50,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249fc1af and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:50, skipping insertion in model container [2024-06-03 19:01:50,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:49" (1/2) ... [2024-06-03 19:01:50,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a54a19e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:50, skipping insertion in model container [2024-06-03 19:01:50,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:01:50" (2/2) ... [2024-06-03 19:01:50,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249fc1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:50, skipping insertion in model container [2024-06-03 19:01:50,812 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:01:50" (2/2) ... [2024-06-03 19:01:50,812 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:01:50,826 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:01:50,827 INFO L97 edCorrectnessWitness]: Location invariant before [L72-L72] ! multithreaded || 0 <= counter [2024-06-03 19:01:50,828 INFO L97 edCorrectnessWitness]: Location invariant before [L73-L73] ! multithreaded || 0 <= counter [2024-06-03 19:01:50,828 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:01:50,828 INFO L106 edCorrectnessWitness]: ghost_update [L71-L71] multithreaded = 1; [2024-06-03 19:01:50,848 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:01:50,974 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:01:50,981 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:01:51,020 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:01:51,031 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:01:51,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51 WrapperNode [2024-06-03 19:01:51,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:01:51,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:01:51,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:01:51,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:01:51,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,067 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2024-06-03 19:01:51,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:01:51,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:01:51,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:01:51,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:01:51,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,085 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 19:01:51,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,097 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,107 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,109 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:01:51,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:01:51,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:01:51,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:01:51,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (1/1) ... [2024-06-03 19:01:51,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:01:51,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:01:51,137 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) [2024-06-03 19:01:51,143 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 [2024-06-03 19:01:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:01:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 19:01:51,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 19:01:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 19:01:51,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 19:01:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:01:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:01:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:01:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:01:51,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:01:51,169 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:01:51,236 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:01:51,237 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:01:51,416 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:01:51,418 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:01:51,523 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:01:51,524 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-03 19:01:51,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:01:51 BoogieIcfgContainer [2024-06-03 19:01:51,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:01:51,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:01:51,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:01:51,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:01:51,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:49" (1/4) ... [2024-06-03 19:01:51,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7df9b1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:01:51, skipping insertion in model container [2024-06-03 19:01:51,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:01:50" (2/4) ... [2024-06-03 19:01:51,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7df9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:01:51, skipping insertion in model container [2024-06-03 19:01:51,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:51" (3/4) ... [2024-06-03 19:01:51,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7df9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:01:51, skipping insertion in model container [2024-06-03 19:01:51,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:01:51" (4/4) ... [2024-06-03 19:01:51,531 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2024-06-03 19:01:51,543 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:01:51,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 19:01:51,544 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:01:51,569 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-03 19:01:51,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 64 flow [2024-06-03 19:01:51,610 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-06-03 19:01:51,611 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-03 19:01:51,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-06-03 19:01:51,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 64 flow [2024-06-03 19:01:51,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 51 flow [2024-06-03 19:01:51,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:01:51,637 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;@3b7ea598, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:01:51,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 19:01:51,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:01:51,643 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-06-03 19:01:51,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:01:51,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:51,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:01:51,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:01:51,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1736951717, now seen corresponding path program 1 times [2024-06-03 19:01:51,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:51,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741410609] [2024-06-03 19:01:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:51,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:51,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:51,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741410609] [2024-06-03 19:01:51,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741410609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:51,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:51,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:01:51,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710645168] [2024-06-03 19:01:51,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:51,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:01:51,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:51,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:01:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:01:51,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-03 19:01:51,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-06-03 19:01:51,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:51,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-03 19:01:51,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:51,965 INFO L124 PetriNetUnfolderBase]: 97/183 cut-off events. [2024-06-03 19:01:51,965 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-06-03 19:01:51,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 183 events. 97/183 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 666 event pairs, 21 based on Foata normal form. 6/180 useless extension candidates. Maximal degree in co-relation 318. Up to 121 conditions per place. [2024-06-03 19:01:51,968 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 20 selfloop transitions, 2 changer transitions 3/30 dead transitions. [2024-06-03 19:01:51,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 125 flow [2024-06-03 19:01:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:01:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:01:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-03 19:01:51,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-06-03 19:01:51,982 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 51 flow. Second operand 3 states and 48 transitions. [2024-06-03 19:01:51,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 125 flow [2024-06-03 19:01:51,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 30 transitions, 117 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 19:01:51,989 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 57 flow [2024-06-03 19:01:51,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2024-06-03 19:01:51,994 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2024-06-03 19:01:51,994 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 57 flow [2024-06-03 19:01:51,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-06-03 19:01:51,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:51,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:51,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:01:51,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:01:51,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:51,996 INFO L85 PathProgramCache]: Analyzing trace with hash 237681008, now seen corresponding path program 1 times [2024-06-03 19:01:51,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:51,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270085949] [2024-06-03 19:01:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:51,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270085949] [2024-06-03 19:01:52,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270085949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:52,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:52,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:01:52,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135713654] [2024-06-03 19:01:52,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:52,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:01:52,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:52,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:01:52,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:01:52,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-03 19:01:52,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-06-03 19:01:52,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:52,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-03 19:01:52,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:52,170 INFO L124 PetriNetUnfolderBase]: 86/173 cut-off events. [2024-06-03 19:01:52,170 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-03 19:01:52,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 173 events. 86/173 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 571 event pairs, 12 based on Foata normal form. 12/180 useless extension candidates. Maximal degree in co-relation 255. Up to 58 conditions per place. [2024-06-03 19:01:52,171 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 22 selfloop transitions, 3 changer transitions 3/33 dead transitions. [2024-06-03 19:01:52,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 139 flow [2024-06-03 19:01:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:01:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:01:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-06-03 19:01:52,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-06-03 19:01:52,173 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 57 flow. Second operand 4 states and 58 transitions. [2024-06-03 19:01:52,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 139 flow [2024-06-03 19:01:52,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 137 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:01:52,174 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 65 flow [2024-06-03 19:01:52,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=65, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2024-06-03 19:01:52,176 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2024-06-03 19:01:52,176 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 65 flow [2024-06-03 19:01:52,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-06-03 19:01:52,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:52,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:52,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:01:52,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:01:52,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1763977555, now seen corresponding path program 1 times [2024-06-03 19:01:52,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:52,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655084125] [2024-06-03 19:01:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:52,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:52,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:52,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655084125] [2024-06-03 19:01:52,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655084125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:52,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:52,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:01:52,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266945819] [2024-06-03 19:01:52,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:52,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:01:52,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:52,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:01:52,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:01:52,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-03 19:01:52,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-03 19:01:52,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:52,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-03 19:01:52,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:52,332 INFO L124 PetriNetUnfolderBase]: 92/187 cut-off events. [2024-06-03 19:01:52,332 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-06-03 19:01:52,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 187 events. 92/187 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 622 event pairs, 13 based on Foata normal form. 12/194 useless extension candidates. Maximal degree in co-relation 310. Up to 84 conditions per place. [2024-06-03 19:01:52,333 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-03 19:01:52,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 149 flow [2024-06-03 19:01:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:01:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:01:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-06-03 19:01:52,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512 [2024-06-03 19:01:52,340 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 65 flow. Second operand 5 states and 64 transitions. [2024-06-03 19:01:52,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 149 flow [2024-06-03 19:01:52,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 19:01:52,341 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2024-06-03 19:01:52,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2024-06-03 19:01:52,342 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2024-06-03 19:01:52,343 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2024-06-03 19:01:52,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-06-03 19:01:52,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 19:01:52,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 19:01:52,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 19:01:52,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 19:01:52,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:01:52,349 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-06-03 19:01:52,352 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 19:01:52,352 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 19:01:52,355 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 19:01:52,356 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 19:01:52,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 07:01:52 BasicIcfg [2024-06-03 19:01:52,358 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 19:01:52,358 INFO L158 Benchmark]: Toolchain (without parser) took 1556.24ms. Allocated memory is still 161.5MB. Free memory was 90.0MB in the beginning and 80.5MB in the end (delta: 9.5MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2024-06-03 19:01:52,359 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 75.0MB in the end (delta: 83.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:01:52,359 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 161.5MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:01:52,361 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.45ms. Allocated memory is still 161.5MB. Free memory was 89.8MB in the beginning and 76.0MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-06-03 19:01:52,361 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.84ms. Allocated memory is still 161.5MB. Free memory was 76.0MB in the beginning and 134.3MB in the end (delta: -58.3MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2024-06-03 19:01:52,363 INFO L158 Benchmark]: Boogie Preprocessor took 43.71ms. Allocated memory is still 161.5MB. Free memory was 134.3MB in the beginning and 132.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:01:52,364 INFO L158 Benchmark]: RCFGBuilder took 412.21ms. Allocated memory is still 161.5MB. Free memory was 132.6MB in the beginning and 110.6MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-03 19:01:52,364 INFO L158 Benchmark]: TraceAbstraction took 831.97ms. Allocated memory is still 161.5MB. Free memory was 110.1MB in the beginning and 80.5MB in the end (delta: 29.6MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2024-06-03 19:01:52,365 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 113.2MB. Free memory was 75.1MB in the beginning and 75.0MB in the end (delta: 83.7kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 161.5MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.45ms. Allocated memory is still 161.5MB. Free memory was 89.8MB in the beginning and 76.0MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.84ms. Allocated memory is still 161.5MB. Free memory was 76.0MB in the beginning and 134.3MB in the end (delta: -58.3MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.71ms. Allocated memory is still 161.5MB. Free memory was 134.3MB in the beginning and 132.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 412.21ms. Allocated memory is still 161.5MB. Free memory was 132.6MB in the beginning and 110.6MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 831.97ms. Allocated memory is still 161.5MB. Free memory was 110.1MB in the beginning and 80.5MB in the end (delta: 29.6MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 73]: 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 5 procedures, 35 locations, 4 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: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 133 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 4 mSDtfsCounter, 133 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 0.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 19:01:52,386 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