./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.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/mutex-meet/popl20-queue-add-2.wvr.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/weaver/popl20-queue-add-2.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-queue-add-2.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-76401ed-m [2024-06-20 18:15:01,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 18:15:01,719 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 18:15:01,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 18:15:01,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 18:15:01,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 18:15:01,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 18:15:01,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 18:15:01,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 18:15:01,755 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 18:15:01,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 18:15:01,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 18:15:01,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 18:15:01,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 18:15:01,768 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 18:15:01,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 18:15:01,768 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 18:15:01,769 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 18:15:01,769 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 18:15:01,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 18:15:01,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 18:15:01,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 18:15:01,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 18:15:01,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 18:15:01,771 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 18:15:01,771 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 18:15:01,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 18:15:01,772 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 18:15:01,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 18:15:01,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 18:15:01,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 18:15:01,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 18:15:01,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:15:01,774 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 18:15:01,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 18:15:01,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 18:15:01,775 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 18:15:01,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 18:15:01,775 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 18:15:01,775 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 18:15:01,775 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 18:15:01,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 18:15:01,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 18:15:01,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 18:15:02,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 18:15:02,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 18:15:02,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 18:15:02,031 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 18:15:02,032 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 18:15:02,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2024-06-20 18:15:03,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 18:15:03,318 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 18:15:03,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2024-06-20 18:15:03,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dd9f4f5a/f3be4ff5b8794913973f59b510d662ef/FLAG94ddf44d0 [2024-06-20 18:15:03,334 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dd9f4f5a/f3be4ff5b8794913973f59b510d662ef [2024-06-20 18:15:03,335 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 18:15:03,339 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 18:15:03,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-queue-add-2.wvr.yml/witness.yml [2024-06-20 18:15:03,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 18:15:03,411 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 18:15:03,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 18:15:03,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 18:15:03,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 18:15:03,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:15:03" (1/2) ... [2024-06-20 18:15:03,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f586e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:15:03, skipping insertion in model container [2024-06-20 18:15:03,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:15:03" (1/2) ... [2024-06-20 18:15:03,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@53e83b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:15:03, skipping insertion in model container [2024-06-20 18:15:03,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:15:03" (2/2) ... [2024-06-20 18:15:03,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f586e9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:15:03, skipping insertion in model container [2024-06-20 18:15:03,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:15:03" (2/2) ... [2024-06-20 18:15:03,421 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 18:15:03,434 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 18:15:03,436 INFO L97 edCorrectnessWitness]: Location invariant before [L94-L94] ! multithreaded || (((((((((4294967296LL + (long long )q_back) + (long long )q_front >= 0LL && (4294967296LL + (long long )n) + (long long )q_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q_front >= 0LL) && (4294967296LL + (long long )N) + (long long )n >= 0LL) && (4294967295LL - (long long )n) + (long long )q_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q_front >= 0LL) && (4294967295LL - (long long )N) + (long long )n >= 0LL) && (4294967295LL + (long long )N) - (long long )n >= 0LL) && (4294967294LL - (long long )N) - (long long )n >= 0LL) [2024-06-20 18:15:03,436 INFO L97 edCorrectnessWitness]: Location invariant before [L93-L93] ! multithreaded || (((((((((4294967296LL + (long long )q_back) + (long long )q_front >= 0LL && (4294967296LL + (long long )n) + (long long )q_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q_front >= 0LL) && (4294967296LL + (long long )N) + (long long )n >= 0LL) && (4294967295LL - (long long )n) + (long long )q_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q_front >= 0LL) && (4294967295LL - (long long )N) + (long long )n >= 0LL) && (4294967295LL + (long long )N) - (long long )n >= 0LL) && (4294967294LL - (long long )N) - (long long )n >= 0LL) [2024-06-20 18:15:03,436 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 18:15:03,436 INFO L106 edCorrectnessWitness]: ghost_update [L92-L92] multithreaded = 1; [2024-06-20 18:15:03,453 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 18:15:03,596 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:15:03,603 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 18:15:03,650 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:15:03,662 INFO L206 MainTranslator]: Completed translation [2024-06-20 18:15:03,662 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:15:03 WrapperNode [2024-06-20 18:15:03,663 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 18:15:03,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 18:15:03,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 18:15:03,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 18:15:03,669 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,675 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,701 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 156 [2024-06-20 18:15:03,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 18:15:03,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 18:15:03,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 18:15:03,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 18:15:03,710 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,710 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,713 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,734 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-06-20 18:15:03,734 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,734 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,739 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,741 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,743 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,744 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 18:15:03,750 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 18:15:03,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 18:15:03,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 18:15:03,751 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 06:15:03" (1/1) ... [2024-06-20 18:15:03,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:15:03,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 18:15:03,775 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 18:15:03,777 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 18:15:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 18:15:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-20 18:15:03,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-20 18:15:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-20 18:15:03,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-20 18:15:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 18:15:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-20 18:15:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-20 18:15:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-20 18:15:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 18:15:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 18:15:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-20 18:15:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 18:15:03,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 18:15:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-20 18:15:03,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-20 18:15:03,804 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 18:15:03,893 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 18:15:03,895 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 18:15:04,083 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 18:15:04,083 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 18:15:04,270 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 18:15:04,271 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-06-20 18:15:04,271 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:15:04 BoogieIcfgContainer [2024-06-20 18:15:04,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 18:15:04,274 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 18:15:04,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 18:15:04,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 18:15:04,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 06:15:03" (1/4) ... [2024-06-20 18:15:04,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d11733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 06:15:04, skipping insertion in model container [2024-06-20 18:15:04,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:15:03" (2/4) ... [2024-06-20 18:15:04,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d11733 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:15:04, skipping insertion in model container [2024-06-20 18:15:04,279 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 06:15:03" (3/4) ... [2024-06-20 18:15:04,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d11733 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:15:04, skipping insertion in model container [2024-06-20 18:15:04,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:15:04" (4/4) ... [2024-06-20 18:15:04,282 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2024-06-20 18:15:04,297 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 18:15:04,297 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 18:15:04,297 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 18:15:04,342 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-20 18:15:04,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 32 transitions, 78 flow [2024-06-20 18:15:04,393 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-06-20 18:15:04,394 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-20 18:15:04,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 4/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-06-20 18:15:04,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 32 transitions, 78 flow [2024-06-20 18:15:04,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 28 transitions, 65 flow [2024-06-20 18:15:04,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 18:15:04,412 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;@68ee9d1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 18:15:04,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 18:15:04,417 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 18:15:04,417 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2024-06-20 18:15:04,418 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 18:15:04,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:04,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-20 18:15:04,419 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)] === [2024-06-20 18:15:04,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:04,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1311778058, now seen corresponding path program 1 times [2024-06-20 18:15:04,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:04,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343159225] [2024-06-20 18:15:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:04,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:04,970 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 18:15:04,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:04,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343159225] [2024-06-20 18:15:04,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343159225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:04,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:04,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 18:15:04,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097946678] [2024-06-20 18:15:04,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:04,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 18:15:04,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:05,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 18:15:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 18:15:05,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-20 18:15:05,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 18:15:05,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:05,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-20 18:15:05,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:05,154 INFO L124 PetriNetUnfolderBase]: 153/308 cut-off events. [2024-06-20 18:15:05,155 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-06-20 18:15:05,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 308 events. 153/308 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1158 event pairs, 54 based on Foata normal form. 34/319 useless extension candidates. Maximal degree in co-relation 546. Up to 207 conditions per place. [2024-06-20 18:15:05,159 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 24 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-06-20 18:15:05,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 138 flow [2024-06-20 18:15:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 18:15:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 18:15:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-20 18:15:05,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-20 18:15:05,169 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 65 flow. Second operand 4 states and 69 transitions. [2024-06-20 18:15:05,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 138 flow [2024-06-20 18:15:05,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-20 18:15:05,173 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 83 flow [2024-06-20 18:15:05,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=83, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-06-20 18:15:05,176 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-20 18:15:05,177 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 83 flow [2024-06-20 18:15:05,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 18:15:05,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:05,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:05,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 18:15:05,178 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)] === [2024-06-20 18:15:05,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:05,178 INFO L85 PathProgramCache]: Analyzing trace with hash -723160326, now seen corresponding path program 1 times [2024-06-20 18:15:05,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:05,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888465442] [2024-06-20 18:15:05,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:05,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:05,233 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 18:15:05,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:05,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888465442] [2024-06-20 18:15:05,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888465442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:05,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:05,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 18:15:05,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478160102] [2024-06-20 18:15:05,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:05,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 18:15:05,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:05,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 18:15:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 18:15:05,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-20 18:15:05,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:05,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:05,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-20 18:15:05,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:05,344 INFO L124 PetriNetUnfolderBase]: 144/337 cut-off events. [2024-06-20 18:15:05,344 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-06-20 18:15:05,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 337 events. 144/337 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1395 event pairs, 95 based on Foata normal form. 13/326 useless extension candidates. Maximal degree in co-relation 325. Up to 211 conditions per place. [2024-06-20 18:15:05,351 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 19 selfloop transitions, 2 changer transitions 9/39 dead transitions. [2024-06-20 18:15:05,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 169 flow [2024-06-20 18:15:05,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 18:15:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 18:15:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-06-20 18:15:05,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-06-20 18:15:05,353 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 83 flow. Second operand 4 states and 74 transitions. [2024-06-20 18:15:05,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 169 flow [2024-06-20 18:15:05,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 18:15:05,356 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 94 flow [2024-06-20 18:15:05,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-06-20 18:15:05,357 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-20 18:15:05,358 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 94 flow [2024-06-20 18:15:05,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:05,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:05,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:05,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 18:15:05,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:15:05,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:05,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1920473374, now seen corresponding path program 1 times [2024-06-20 18:15:05,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:05,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25262209] [2024-06-20 18:15:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:05,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-20 18:15:05,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:05,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25262209] [2024-06-20 18:15:05,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25262209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:05,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:05,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 18:15:05,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876758409] [2024-06-20 18:15:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:05,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:15:05,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:15:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:15:05,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-20 18:15:05,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:05,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:05,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-20 18:15:05,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:05,730 INFO L124 PetriNetUnfolderBase]: 108/229 cut-off events. [2024-06-20 18:15:05,730 INFO L125 PetriNetUnfolderBase]: For 74/76 co-relation queries the response was YES. [2024-06-20 18:15:05,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 229 events. 108/229 cut-off events. For 74/76 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 810 event pairs, 29 based on Foata normal form. 27/244 useless extension candidates. Maximal degree in co-relation 487. Up to 141 conditions per place. [2024-06-20 18:15:05,731 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2024-06-20 18:15:05,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 154 flow [2024-06-20 18:15:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 18:15:05,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 18:15:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-06-20 18:15:05,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-20 18:15:05,734 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 94 flow. Second operand 5 states and 73 transitions. [2024-06-20 18:15:05,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 154 flow [2024-06-20 18:15:05,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 146 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-20 18:15:05,735 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2024-06-20 18:15:05,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2024-06-20 18:15:05,736 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-06-20 18:15:05,736 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2024-06-20 18:15:05,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:05,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 18:15:05,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 18:15:05,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 18:15:05,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 18:15:05,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 18:15:05,740 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-06-20 18:15:05,742 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 18:15:05,742 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 18:15:05,745 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 18:15:05,745 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 18:15:05,746 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 06:15:05 BasicIcfg [2024-06-20 18:15:05,746 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 18:15:05,746 INFO L158 Benchmark]: Toolchain (without parser) took 2335.24ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 103.6MB in the beginning and 124.1MB in the end (delta: -20.4MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2024-06-20 18:15:05,747 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory was 106.1MB in the beginning and 106.1MB in the end (delta: 88.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:15:05,747 INFO L158 Benchmark]: Witness Parser took 0.40ms. Allocated memory is still 138.4MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:15:05,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.62ms. Allocated memory is still 138.4MB. Free memory was 103.4MB in the beginning and 88.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-20 18:15:05,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.07ms. Allocated memory is still 138.4MB. Free memory was 88.3MB in the beginning and 86.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 18:15:05,748 INFO L158 Benchmark]: Boogie Preprocessor took 43.78ms. Allocated memory is still 138.4MB. Free memory was 86.2MB in the beginning and 83.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 18:15:05,748 INFO L158 Benchmark]: RCFGBuilder took 520.75ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 83.8MB in the beginning and 140.9MB in the end (delta: -57.0MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2024-06-20 18:15:05,748 INFO L158 Benchmark]: TraceAbstraction took 1472.32ms. Allocated memory is still 192.9MB. Free memory was 139.6MB in the beginning and 124.1MB in the end (delta: 15.5MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2024-06-20 18:15:05,750 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory was 106.1MB in the beginning and 106.1MB in the end (delta: 88.7kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.40ms. Allocated memory is still 138.4MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.62ms. Allocated memory is still 138.4MB. Free memory was 103.4MB in the beginning and 88.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.07ms. Allocated memory is still 138.4MB. Free memory was 88.3MB in the beginning and 86.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.78ms. Allocated memory is still 138.4MB. Free memory was 86.2MB in the beginning and 83.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 520.75ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 83.8MB in the beginning and 140.9MB in the end (delta: -57.0MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1472.32ms. Allocated memory is still 192.9MB. Free memory was 139.6MB in the beginning and 124.1MB in the end (delta: 15.5MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 94]: 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, 45 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: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 230 IncrementalHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 0 mSDtfsCounter, 230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 663 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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! [2024-06-20 18:15:05,769 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