./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/queue.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/queue.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/queue.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-7724a2d-m [2024-06-27 23:05:01,123 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:05:01,159 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:05:01,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:05:01,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:05:01,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:05:01,194 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:05:01,194 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:05:01,194 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:05:01,195 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:05:01,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:05:01,195 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:05:01,195 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:05:01,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:05:01,196 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:05:01,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:05:01,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:05:01,197 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:05:01,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:05:01,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:05:01,197 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:05:01,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:05:01,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:05:01,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:05:01,208 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:05:01,208 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:05:01,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:05:01,209 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:05:01,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:05:01,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:05:01,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:05:01,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:05:01,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:05:01,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:05:01,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:05:01,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:05:01,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:05:01,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:05:01,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:05:01,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:05:01,212 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:05:01,212 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:05:01,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:05:01,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:05:01,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:05:01,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:05:01,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:05:01,444 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:05:01,444 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:05:01,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2024-06-27 23:05:02,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:05:02,769 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:05:02,769 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2024-06-27 23:05:02,795 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4864e0c27/f4679c98c33e485ba12ad024d435bf63/FLAGc9cd5d828 [2024-06-27 23:05:02,806 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4864e0c27/f4679c98c33e485ba12ad024d435bf63 [2024-06-27 23:05:02,808 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:05:02,809 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:05:02,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/queue.yml/witness.yml [2024-06-27 23:05:02,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:05:02,878 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:05:02,879 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:05:02,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:05:02,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:05:02,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:05:02" (1/2) ... [2024-06-27 23:05:02,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66df0614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:02, skipping insertion in model container [2024-06-27 23:05:02,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:05:02" (1/2) ... [2024-06-27 23:05:02,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2df3f889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:02, skipping insertion in model container [2024-06-27 23:05:02,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:05:02" (2/2) ... [2024-06-27 23:05:02,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66df0614 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:02, skipping insertion in model container [2024-06-27 23:05:02,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:05:02" (2/2) ... [2024-06-27 23:05:02,900 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:05:02,932 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:05:02,934 INFO L97 edCorrectnessWitness]: Location invariant before [L1064-L1064] ! multithreaded || (m_locked || ((-1LL + (long long )dequeue_flag) + (long long )enqueue_flag >= 0LL && (1LL - (long long )dequeue_flag) - (long long )enqueue_flag >= 0LL)) [2024-06-27 23:05:02,935 INFO L97 edCorrectnessWitness]: Location invariant before [L1065-L1065] ! multithreaded || (m_locked || ((-1LL + (long long )dequeue_flag) + (long long )enqueue_flag >= 0LL && (1LL - (long long )dequeue_flag) - (long long )enqueue_flag >= 0LL)) [2024-06-27 23:05:02,935 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-27 23:05:02,935 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:05:02,935 INFO L106 edCorrectnessWitness]: ghost_update [L1039-L1039] m_locked = 1; [2024-06-27 23:05:02,936 INFO L106 edCorrectnessWitness]: ghost_update [L1017-L1017] m_locked = 0; [2024-06-27 23:05:02,936 INFO L106 edCorrectnessWitness]: ghost_update [L1048-L1048] m_locked = 0; [2024-06-27 23:05:02,936 INFO L106 edCorrectnessWitness]: ghost_update [L1008-L1008] m_locked = 1; [2024-06-27 23:05:02,936 INFO L106 edCorrectnessWitness]: ghost_update [L1020-L1020] m_locked = 1; [2024-06-27 23:05:02,937 INFO L106 edCorrectnessWitness]: ghost_update [L1029-L1029] m_locked = 0; [2024-06-27 23:05:02,937 INFO L106 edCorrectnessWitness]: ghost_update [L1063-L1063] multithreaded = 1; [2024-06-27 23:05:02,978 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:05:03,264 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:05:03,276 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:05:03,364 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:05:03,427 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:05:03,428 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03 WrapperNode [2024-06-27 23:05:03,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:05:03,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:05:03,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:05:03,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:05:03,435 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 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,461 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 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,501 INFO L138 Inliner]: procedures = 274, calls = 64, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 266 [2024-06-27 23:05:03,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:05:03,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:05:03,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:05:03,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:05:03,511 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,542 INFO L175 MemorySlicer]: Split 51 memory accesses to 5 slices as follows [2, 8, 32, 5, 4]. 63 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 8, 0, 5, 0]. The 18 writes are split as follows [0, 0, 15, 0, 3]. [2024-06-27 23:05:03,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,577 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,579 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:05:03,588 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:05:03,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:05:03,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:05:03,589 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:05:03,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:05:03,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:05:03,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:05:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-27 23:05:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-27 23:05:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-27 23:05:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-27 23:05:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 23:05:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 23:05:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 23:05:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-27 23:05:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-06-27 23:05:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-06-27 23:05:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 23:05:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 23:05:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-27 23:05:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-06-27 23:05:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-06-27 23:05:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 23:05:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:05:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:05:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 23:05:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 23:05:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-27 23:05:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-06-27 23:05:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:05:03,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:05:03,641 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:05:03,747 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:05:03,749 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:05:04,007 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:05:04,007 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:05:04,186 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:05:04,187 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 23:05:04,187 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:05:04 BoogieIcfgContainer [2024-06-27 23:05:04,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:05:04,205 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:05:04,205 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:05:04,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:05:04,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:05:02" (1/4) ... [2024-06-27 23:05:04,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b282e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:05:04, skipping insertion in model container [2024-06-27 23:05:04,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:05:02" (2/4) ... [2024-06-27 23:05:04,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b282e34 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:05:04, skipping insertion in model container [2024-06-27 23:05:04,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:03" (3/4) ... [2024-06-27 23:05:04,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b282e34 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:05:04, skipping insertion in model container [2024-06-27 23:05:04,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:05:04" (4/4) ... [2024-06-27 23:05:04,211 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-06-27 23:05:04,223 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:05:04,223 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:05:04,223 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:05:04,271 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 23:05:04,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 98 flow [2024-06-27 23:05:04,330 INFO L124 PetriNetUnfolderBase]: 5/40 cut-off events. [2024-06-27 23:05:04,331 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 23:05:04,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 5/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-27 23:05:04,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions, 98 flow [2024-06-27 23:05:04,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 81 flow [2024-06-27 23:05:04,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:05:04,352 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;@18870012, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:05:04,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:05:04,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:05:04,358 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 23:05:04,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:05:04,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:04,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-27 23:05:04,408 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)] === [2024-06-27 23:05:04,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:04,412 INFO L85 PathProgramCache]: Analyzing trace with hash -805322162, now seen corresponding path program 1 times [2024-06-27 23:05:04,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:04,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388315242] [2024-06-27 23:05:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:04,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:04,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:04,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388315242] [2024-06-27 23:05:04,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388315242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:04,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:04,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:05:04,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461233127] [2024-06-27 23:05:04,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:04,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:05:04,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:04,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:05:04,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:05:04,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 23:05:04,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:04,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:04,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 23:05:04,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:05,140 INFO L124 PetriNetUnfolderBase]: 429/795 cut-off events. [2024-06-27 23:05:05,141 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-06-27 23:05:05,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1563 conditions, 795 events. 429/795 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3353 event pairs, 228 based on Foata normal form. 81/833 useless extension candidates. Maximal degree in co-relation 1490. Up to 411 conditions per place. [2024-06-27 23:05:05,146 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 37 selfloop transitions, 2 changer transitions 5/49 dead transitions. [2024-06-27 23:05:05,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 201 flow [2024-06-27 23:05:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:05:05,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:05:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-06-27 23:05:05,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-06-27 23:05:05,186 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 81 flow. Second operand 3 states and 68 transitions. [2024-06-27 23:05:05,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 201 flow [2024-06-27 23:05:05,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 193 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:05:05,193 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 81 flow [2024-06-27 23:05:05,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-06-27 23:05:05,198 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2024-06-27 23:05:05,198 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 81 flow [2024-06-27 23:05:05,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:05,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:05,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:05,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:05:05,199 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)] === [2024-06-27 23:05:05,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1849625849, now seen corresponding path program 1 times [2024-06-27 23:05:05,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:05,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632809018] [2024-06-27 23:05:05,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:05,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:05,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:05,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632809018] [2024-06-27 23:05:05,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632809018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:05,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:05,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:05:05,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288538165] [2024-06-27 23:05:05,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:05,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:05:05,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:05,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:05:05,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:05:05,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-27 23:05:05,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:05,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:05,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-27 23:05:05,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:05,490 INFO L124 PetriNetUnfolderBase]: 484/917 cut-off events. [2024-06-27 23:05:05,491 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-06-27 23:05:05,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 917 events. 484/917 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4112 event pairs, 180 based on Foata normal form. 20/934 useless extension candidates. Maximal degree in co-relation 1043. Up to 442 conditions per place. [2024-06-27 23:05:05,495 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 44 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-06-27 23:05:05,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 238 flow [2024-06-27 23:05:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:05:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:05:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-27 23:05:05,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-27 23:05:05,496 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 81 flow. Second operand 5 states and 82 transitions. [2024-06-27 23:05:05,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 238 flow [2024-06-27 23:05:05,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:05:05,498 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 136 flow [2024-06-27 23:05:05,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-06-27 23:05:05,499 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-06-27 23:05:05,499 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 136 flow [2024-06-27 23:05:05,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:05,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:05,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:05,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:05:05,500 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)] === [2024-06-27 23:05:05,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1503824909, now seen corresponding path program 1 times [2024-06-27 23:05:05,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:05,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607469393] [2024-06-27 23:05:05,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:05,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:05,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:05,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607469393] [2024-06-27 23:05:05,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607469393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:05,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:05,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:05:05,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417177911] [2024-06-27 23:05:05,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:05,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:05:05,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:05,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:05:05,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:05:05,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 23:05:05,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:05,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:05,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 23:05:05,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:05,842 INFO L124 PetriNetUnfolderBase]: 597/1154 cut-off events. [2024-06-27 23:05:05,843 INFO L125 PetriNetUnfolderBase]: For 564/568 co-relation queries the response was YES. [2024-06-27 23:05:05,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 1154 events. 597/1154 cut-off events. For 564/568 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5213 event pairs, 291 based on Foata normal form. 27/1176 useless extension candidates. Maximal degree in co-relation 2317. Up to 706 conditions per place. [2024-06-27 23:05:05,847 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 48 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-06-27 23:05:05,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 300 flow [2024-06-27 23:05:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:05:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:05:05,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-06-27 23:05:05,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-27 23:05:05,851 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 136 flow. Second operand 4 states and 71 transitions. [2024-06-27 23:05:05,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 300 flow [2024-06-27 23:05:05,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:05:05,853 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 154 flow [2024-06-27 23:05:05,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-06-27 23:05:05,855 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2024-06-27 23:05:05,855 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 154 flow [2024-06-27 23:05:05,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:05,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:05,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:05,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:05:05,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:05,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:05,857 INFO L85 PathProgramCache]: Analyzing trace with hash 730425084, now seen corresponding path program 1 times [2024-06-27 23:05:05,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:05,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787652264] [2024-06-27 23:05:05,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:05,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:05,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:05,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787652264] [2024-06-27 23:05:05,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787652264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:05,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:05,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:05:05,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41077564] [2024-06-27 23:05:05,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:05,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:05:05,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:05,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:05:05,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:05:05,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-27 23:05:05,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:05,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:05,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-27 23:05:05,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:06,117 INFO L124 PetriNetUnfolderBase]: 328/670 cut-off events. [2024-06-27 23:05:06,117 INFO L125 PetriNetUnfolderBase]: For 386/389 co-relation queries the response was YES. [2024-06-27 23:05:06,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1692 conditions, 670 events. 328/670 cut-off events. For 386/389 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2653 event pairs, 127 based on Foata normal form. 38/705 useless extension candidates. Maximal degree in co-relation 1089. Up to 321 conditions per place. [2024-06-27 23:05:06,120 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 32 selfloop transitions, 9 changer transitions 0/45 dead transitions. [2024-06-27 23:05:06,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 236 flow [2024-06-27 23:05:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:05:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:05:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-27 23:05:06,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-27 23:05:06,122 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 154 flow. Second operand 6 states and 77 transitions. [2024-06-27 23:05:06,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 236 flow [2024-06-27 23:05:06,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 220 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 23:05:06,125 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 132 flow [2024-06-27 23:05:06,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2024-06-27 23:05:06,125 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-06-27 23:05:06,126 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 132 flow [2024-06-27 23:05:06,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:06,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:06,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:06,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:05:06,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:06,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1161423950, now seen corresponding path program 1 times [2024-06-27 23:05:06,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:06,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633652331] [2024-06-27 23:05:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:06,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:06,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:06,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633652331] [2024-06-27 23:05:06,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633652331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:06,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:06,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:05:06,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818129032] [2024-06-27 23:05:06,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:06,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:05:06,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:06,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:05:06,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:05:06,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2024-06-27 23:05:06,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2024-06-27 23:05:06,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:06,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2024-06-27 23:05:06,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:06,772 INFO L124 PetriNetUnfolderBase]: 844/1587 cut-off events. [2024-06-27 23:05:06,772 INFO L125 PetriNetUnfolderBase]: For 1137/1138 co-relation queries the response was YES. [2024-06-27 23:05:06,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3852 conditions, 1587 events. 844/1587 cut-off events. For 1137/1138 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7780 event pairs, 413 based on Foata normal form. 10/1594 useless extension candidates. Maximal degree in co-relation 1685. Up to 717 conditions per place. [2024-06-27 23:05:06,777 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 28 selfloop transitions, 3 changer transitions 54/88 dead transitions. [2024-06-27 23:05:06,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 88 transitions, 482 flow [2024-06-27 23:05:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:05:06,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:05:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-27 23:05:06,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-27 23:05:06,779 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 132 flow. Second operand 8 states and 123 transitions. [2024-06-27 23:05:06,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 88 transitions, 482 flow [2024-06-27 23:05:06,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 88 transitions, 442 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 23:05:06,782 INFO L231 Difference]: Finished difference. Result has 53 places, 33 transitions, 138 flow [2024-06-27 23:05:06,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=138, PETRI_PLACES=53, PETRI_TRANSITIONS=33} [2024-06-27 23:05:06,783 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-06-27 23:05:06,783 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 33 transitions, 138 flow [2024-06-27 23:05:06,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2024-06-27 23:05:06,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:06,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:06,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:05:06,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:06,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash -270380036, now seen corresponding path program 2 times [2024-06-27 23:05:06,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046545571] [2024-06-27 23:05:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:06,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:07,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:07,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046545571] [2024-06-27 23:05:07,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046545571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:07,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:07,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:05:07,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194417501] [2024-06-27 23:05:07,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:07,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:05:07,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:05:07,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:05:07,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 23:05:07,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 33 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:07,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:07,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 23:05:07,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:07,105 INFO L124 PetriNetUnfolderBase]: 241/491 cut-off events. [2024-06-27 23:05:07,105 INFO L125 PetriNetUnfolderBase]: For 481/483 co-relation queries the response was YES. [2024-06-27 23:05:07,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 491 events. 241/491 cut-off events. For 481/483 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1846 event pairs, 130 based on Foata normal form. 9/500 useless extension candidates. Maximal degree in co-relation 1180. Up to 286 conditions per place. [2024-06-27 23:05:07,107 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-06-27 23:05:07,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 240 flow [2024-06-27 23:05:07,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:05:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:05:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-27 23:05:07,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-27 23:05:07,108 INFO L175 Difference]: Start difference. First operand has 53 places, 33 transitions, 138 flow. Second operand 4 states and 67 transitions. [2024-06-27 23:05:07,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 240 flow [2024-06-27 23:05:07,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 208 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:05:07,112 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-06-27 23:05:07,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2024-06-27 23:05:07,114 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-06-27 23:05:07,114 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-06-27 23:05:07,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:07,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 23:05:07,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 23:05:07,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 23:05:07,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 23:05:07,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:05:07,118 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-06-27 23:05:07,122 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:05:07,122 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:05:07,125 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 23:05:07,125 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 23:05:07,126 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:05:07 BasicIcfg [2024-06-27 23:05:07,126 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:05:07,127 INFO L158 Benchmark]: Toolchain (without parser) took 4248.11ms. Allocated memory was 172.0MB in the beginning and 297.8MB in the end (delta: 125.8MB). Free memory was 141.6MB in the beginning and 155.5MB in the end (delta: -13.9MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,127 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:05:07,127 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 172.0MB. Free memory was 141.6MB in the beginning and 141.6MB in the end (delta: 36.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:05:07,128 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.78ms. Allocated memory is still 172.0MB. Free memory was 141.6MB in the beginning and 103.1MB in the end (delta: 38.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,128 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.32ms. Allocated memory is still 172.0MB. Free memory was 103.1MB in the beginning and 100.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,128 INFO L158 Benchmark]: Boogie Preprocessor took 85.34ms. Allocated memory is still 172.0MB. Free memory was 100.2MB in the beginning and 96.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,129 INFO L158 Benchmark]: RCFGBuilder took 599.87ms. Allocated memory is still 172.0MB. Free memory was 96.8MB in the beginning and 67.3MB in the end (delta: 29.5MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,129 INFO L158 Benchmark]: TraceAbstraction took 2921.30ms. Allocated memory was 172.0MB in the beginning and 297.8MB in the end (delta: 125.8MB). Free memory was 133.6MB in the beginning and 155.5MB in the end (delta: -21.9MB). Peak memory consumption was 103.9MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,130 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 172.0MB. Free memory was 141.6MB in the beginning and 141.6MB in the end (delta: 36.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 549.78ms. Allocated memory is still 172.0MB. Free memory was 141.6MB in the beginning and 103.1MB in the end (delta: 38.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.32ms. Allocated memory is still 172.0MB. Free memory was 103.1MB in the beginning and 100.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.34ms. Allocated memory is still 172.0MB. Free memory was 100.2MB in the beginning and 96.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 599.87ms. Allocated memory is still 172.0MB. Free memory was 96.8MB in the beginning and 67.3MB in the end (delta: 29.5MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2921.30ms. Allocated memory was 172.0MB in the beginning and 297.8MB in the end (delta: 125.8MB). Free memory was 133.6MB in the beginning and 155.5MB in the end (delta: -21.9MB). Peak memory consumption was 103.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1064]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1065]: 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, 62 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: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 229 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 696 IncrementalHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 12 mSDtfsCounter, 696 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=3, InterpolantAutomatonStates: 30, 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, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 767 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2024-06-27 23:05:07,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE