./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/arithmetic_prog_ok.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/arithmetic_prog_ok.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 21:03:30,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 21:03:30,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 21:03:30,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 21:03:30,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 21:03:30,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 21:03:30,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 21:03:30,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 21:03:30,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 21:03:30,582 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 21:03:30,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 21:03:30,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 21:03:30,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 21:03:30,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 21:03:30,585 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 21:03:30,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 21:03:30,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 21:03:30,586 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 21:03:30,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 21:03:30,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 21:03:30,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 21:03:30,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 21:03:30,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 21:03:30,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 21:03:30,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 21:03:30,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 21:03:30,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 21:03:30,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 21:03:30,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 21:03:30,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 21:03:30,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 21:03:30,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 21:03:30,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:03:30,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 21:03:30,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 21:03:30,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 21:03:30,592 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 21:03:30,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 21:03:30,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 21:03:30,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 21:03:30,592 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 21:03:30,593 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 21:03:30,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 21:03:30,593 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 21:03:30,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 21:03:30,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 21:03:30,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 21:03:30,906 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 21:03:30,907 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 21:03:30,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/arithmetic_prog_ok.yml/witness.yml [2024-06-03 21:03:31,055 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 21:03:31,055 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 21:03:31,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2024-06-03 21:03:32,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 21:03:32,449 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 21:03:32,449 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2024-06-03 21:03:32,473 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3da12cfd5/19c0e60b85a3430db102970a2c32be05/FLAG54eeac51d [2024-06-03 21:03:32,771 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3da12cfd5/19c0e60b85a3430db102970a2c32be05 [2024-06-03 21:03:32,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 21:03:32,773 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 21:03:32,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 21:03:32,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 21:03:32,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 21:03:32,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:31" (1/2) ... [2024-06-03 21:03:32,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6467c6f6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:32, skipping insertion in model container [2024-06-03 21:03:32,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:31" (1/2) ... [2024-06-03 21:03:32,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f9a97ef and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:32, skipping insertion in model container [2024-06-03 21:03:32,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:03:32" (2/2) ... [2024-06-03 21:03:32,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6467c6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:32, skipping insertion in model container [2024-06-03 21:03:32,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:03:32" (2/2) ... [2024-06-03 21:03:32,784 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 21:03:32,831 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 21:03:32,832 INFO L97 edCorrectnessWitness]: Location invariant before [L915-L915] ((! multithreaded || ((0 <= num && num <= 1) && (num == 0 || num == 1))) && (! multithreaded || (m_locked || ((0 <= num && num <= 1) && (num == 0 || num == 1))))) && (! multithreaded || ((0 <= flag && flag <= 1) && (flag == 0 || flag == 1))) [2024-06-03 21:03:32,833 INFO L97 edCorrectnessWitness]: Location invariant before [L914-L914] ((! multithreaded || ((0 <= num && num <= 1) && (num == 0 || num == 1))) && (! multithreaded || (m_locked || ((0 <= num && num <= 1) && (num == 0 || num == 1))))) && (! multithreaded || ((0 <= flag && flag <= 1) && (flag == 0 || flag == 1))) [2024-06-03 21:03:32,833 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-03 21:03:32,833 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 21:03:32,833 INFO L106 edCorrectnessWitness]: ghost_update [L913-L913] multithreaded = 1; [2024-06-03 21:03:32,834 INFO L106 edCorrectnessWitness]: ghost_update [L895-L895] m_locked = 1; [2024-06-03 21:03:32,834 INFO L106 edCorrectnessWitness]: ghost_update [L895-L895] m_locked = 0; [2024-06-03 21:03:32,834 INFO L106 edCorrectnessWitness]: ghost_update [L893-L893] m_locked = 1; [2024-06-03 21:03:32,835 INFO L106 edCorrectnessWitness]: ghost_update [L881-L881] m_locked = 0; [2024-06-03 21:03:32,835 INFO L106 edCorrectnessWitness]: ghost_update [L881-L881] m_locked = 1; [2024-06-03 21:03:32,835 INFO L106 edCorrectnessWitness]: ghost_update [L883-L883] m_locked = 0; [2024-06-03 21:03:32,835 INFO L106 edCorrectnessWitness]: ghost_update [L898-L898] m_locked = 0; [2024-06-03 21:03:32,835 INFO L106 edCorrectnessWitness]: ghost_update [L879-L879] m_locked = 1; [2024-06-03 21:03:32,872 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 21:03:33,297 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:03:33,323 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 Start Parsing Local Start Parsing Local [2024-06-03 21:03:33,415 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:03:33,465 INFO L206 MainTranslator]: Completed translation [2024-06-03 21:03:33,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33 WrapperNode [2024-06-03 21:03:33,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 21:03:33,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 21:03:33,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 21:03:33,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 21:03:33,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,487 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,509 INFO L138 Inliner]: procedures = 243, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2024-06-03 21:03:33,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 21:03:33,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 21:03:33,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 21:03:33,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 21:03:33,519 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,524 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,538 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 1, 8]. 73 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 8]. The 0 writes are split as follows [0, 0, 0]. [2024-06-03 21:03:33,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 21:03:33,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 21:03:33,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 21:03:33,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 21:03:33,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (1/1) ... [2024-06-03 21:03:33,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:03:33,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:03:33,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 21:03:33,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 21:03:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-06-03 21:03:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-06-03 21:03:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-06-03 21:03:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-03 21:03:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 21:03:33,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 21:03:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 21:03:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 21:03:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-03 21:03:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 21:03:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 21:03:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-03 21:03:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-03 21:03:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 21:03:33,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 21:03:33,627 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 21:03:33,761 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 21:03:33,763 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 21:03:34,068 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 21:03:34,068 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 21:03:34,271 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 21:03:34,271 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-03 21:03:34,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:03:34 BoogieIcfgContainer [2024-06-03 21:03:34,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 21:03:34,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 21:03:34,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 21:03:34,293 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 21:03:34,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:31" (1/4) ... [2024-06-03 21:03:34,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64877068 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 09:03:34, skipping insertion in model container [2024-06-03 21:03:34,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 09:03:32" (2/4) ... [2024-06-03 21:03:34,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64877068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 09:03:34, skipping insertion in model container [2024-06-03 21:03:34,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:33" (3/4) ... [2024-06-03 21:03:34,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64877068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 09:03:34, skipping insertion in model container [2024-06-03 21:03:34,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:03:34" (4/4) ... [2024-06-03 21:03:34,297 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-06-03 21:03:34,314 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 21:03:34,314 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 21:03:34,315 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 21:03:34,361 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-03 21:03:34,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 90 flow [2024-06-03 21:03:34,413 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-06-03 21:03:34,413 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-03 21:03:34,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 4/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 66 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-06-03 21:03:34,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 90 flow [2024-06-03 21:03:34,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 77 flow [2024-06-03 21:03:34,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 21:03:34,433 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;@68f04627, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 21:03:34,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 21:03:34,438 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 21:03:34,439 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-06-03 21:03:34,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 21:03:34,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:34,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 21:03:34,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 21:03:34,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:34,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1511394016, now seen corresponding path program 1 times [2024-06-03 21:03:34,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:34,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014643686] [2024-06-03 21:03:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:34,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014643686] [2024-06-03 21:03:34,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014643686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:34,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:34,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 21:03:34,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400264622] [2024-06-03 21:03:34,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:34,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 21:03:34,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:34,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 21:03:34,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 21:03:35,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-03 21:03:35,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:35,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:35,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-03 21:03:35,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:35,267 INFO L124 PetriNetUnfolderBase]: 507/853 cut-off events. [2024-06-03 21:03:35,269 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-06-03 21:03:35,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 853 events. 507/853 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3571 event pairs, 157 based on Foata normal form. 30/823 useless extension candidates. Maximal degree in co-relation 1593. Up to 672 conditions per place. [2024-06-03 21:03:35,282 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 37 selfloop transitions, 3 changer transitions 2/48 dead transitions. [2024-06-03 21:03:35,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 195 flow [2024-06-03 21:03:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 21:03:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 21:03:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-06-03 21:03:35,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-06-03 21:03:35,297 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 77 flow. Second operand 3 states and 70 transitions. [2024-06-03 21:03:35,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 195 flow [2024-06-03 21:03:35,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 187 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 21:03:35,307 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 94 flow [2024-06-03 21:03:35,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-06-03 21:03:35,312 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2024-06-03 21:03:35,313 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 94 flow [2024-06-03 21:03:35,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:35,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:35,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:35,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 21:03:35,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 21:03:35,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:35,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1667159093, now seen corresponding path program 1 times [2024-06-03 21:03:35,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480576410] [2024-06-03 21:03:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:35,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:35,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:35,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480576410] [2024-06-03 21:03:35,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480576410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:35,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:35,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 21:03:35,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304698976] [2024-06-03 21:03:35,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:35,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 21:03:35,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:35,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 21:03:35,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 21:03:35,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-03 21:03:35,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:35,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:35,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-03 21:03:35,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:35,801 INFO L124 PetriNetUnfolderBase]: 474/882 cut-off events. [2024-06-03 21:03:35,802 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2024-06-03 21:03:35,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 882 events. 474/882 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3772 event pairs, 140 based on Foata normal form. 158/1024 useless extension candidates. Maximal degree in co-relation 1447. Up to 367 conditions per place. [2024-06-03 21:03:35,807 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 49 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2024-06-03 21:03:35,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 61 transitions, 264 flow [2024-06-03 21:03:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 21:03:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 21:03:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-06-03 21:03:35,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-06-03 21:03:35,814 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 94 flow. Second operand 4 states and 89 transitions. [2024-06-03 21:03:35,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 61 transitions, 264 flow [2024-06-03 21:03:35,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 61 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:35,818 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 131 flow [2024-06-03 21:03:35,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2024-06-03 21:03:35,825 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2024-06-03 21:03:35,825 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 131 flow [2024-06-03 21:03:35,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:35,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:35,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:35,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 21:03:35,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 21:03:35,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash 84565304, now seen corresponding path program 1 times [2024-06-03 21:03:35,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:35,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150921105] [2024-06-03 21:03:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:35,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:35,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150921105] [2024-06-03 21:03:35,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150921105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:35,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:35,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 21:03:35,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292055449] [2024-06-03 21:03:35,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:35,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 21:03:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:35,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 21:03:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 21:03:35,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-03 21:03:35,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 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) [2024-06-03 21:03:35,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:35,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-03 21:03:35,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:36,037 INFO L124 PetriNetUnfolderBase]: 568/1121 cut-off events. [2024-06-03 21:03:36,037 INFO L125 PetriNetUnfolderBase]: For 596/610 co-relation queries the response was YES. [2024-06-03 21:03:36,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 1121 events. 568/1121 cut-off events. For 596/610 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5148 event pairs, 268 based on Foata normal form. 28/1130 useless extension candidates. Maximal degree in co-relation 2004. Up to 603 conditions per place. [2024-06-03 21:03:36,045 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 41 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-06-03 21:03:36,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 260 flow [2024-06-03 21:03:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 21:03:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 21:03:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-03 21:03:36,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2024-06-03 21:03:36,047 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 131 flow. Second operand 3 states and 73 transitions. [2024-06-03 21:03:36,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 260 flow [2024-06-03 21:03:36,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:36,050 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 133 flow [2024-06-03 21:03:36,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=38, 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=133, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-06-03 21:03:36,051 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2024-06-03 21:03:36,051 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 133 flow [2024-06-03 21:03:36,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 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) [2024-06-03 21:03:36,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:36,052 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] [2024-06-03 21:03:36,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 21:03:36,052 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)] === [2024-06-03 21:03:36,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:36,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1018183257, now seen corresponding path program 1 times [2024-06-03 21:03:36,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:36,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957954564] [2024-06-03 21:03:36,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:36,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:36,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:36,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957954564] [2024-06-03 21:03:36,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957954564] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 21:03:36,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444441365] [2024-06-03 21:03:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:36,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:03:36,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:03:36,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-03 21:03:36,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-03 21:03:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:36,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-03 21:03:36,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 21:03:36,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-06-03 21:03:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:36,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-03 21:03:36,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444441365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:36,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-03 21:03:36,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-06-03 21:03:36,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709657137] [2024-06-03 21:03:36,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:36,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 21:03:36,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:36,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 21:03:36,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:03:36,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-03 21:03:36,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2024-06-03 21:03:36,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:36,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-03 21:03:36,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:36,416 INFO L124 PetriNetUnfolderBase]: 310/699 cut-off events. [2024-06-03 21:03:36,417 INFO L125 PetriNetUnfolderBase]: For 376/382 co-relation queries the response was YES. [2024-06-03 21:03:36,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 699 events. 310/699 cut-off events. For 376/382 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2831 event pairs, 122 based on Foata normal form. 46/742 useless extension candidates. Maximal degree in co-relation 1139. Up to 285 conditions per place. [2024-06-03 21:03:36,421 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 32 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-03 21:03:36,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 257 flow [2024-06-03 21:03:36,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 21:03:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 21:03:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-06-03 21:03:36,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-06-03 21:03:36,425 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 133 flow. Second operand 3 states and 71 transitions. [2024-06-03 21:03:36,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 257 flow [2024-06-03 21:03:36,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:36,429 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 147 flow [2024-06-03 21:03:36,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-06-03 21:03:36,431 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-06-03 21:03:36,431 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 147 flow [2024-06-03 21:03:36,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2024-06-03 21:03:36,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:36,432 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] [2024-06-03 21:03:36,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-03 21:03:36,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:03:36,649 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)] === [2024-06-03 21:03:36,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:36,649 INFO L85 PathProgramCache]: Analyzing trace with hash -467601196, now seen corresponding path program 1 times [2024-06-03 21:03:36,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:36,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901945518] [2024-06-03 21:03:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:36,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:36,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:36,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901945518] [2024-06-03 21:03:36,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901945518] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 21:03:36,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067018886] [2024-06-03 21:03:36,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:36,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:03:36,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:03:36,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-03 21:03:36,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-03 21:03:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:36,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-03 21:03:36,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 21:03:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:36,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-03 21:03:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:36,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067018886] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-03 21:03:36,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-03 21:03:36,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-06-03 21:03:36,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214833636] [2024-06-03 21:03:36,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-03 21:03:36,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 21:03:36,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 21:03:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-03 21:03:36,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-03 21:03:36,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:36,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:36,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-03 21:03:36,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:37,137 INFO L124 PetriNetUnfolderBase]: 728/1497 cut-off events. [2024-06-03 21:03:37,137 INFO L125 PetriNetUnfolderBase]: For 1103/1127 co-relation queries the response was YES. [2024-06-03 21:03:37,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 1497 events. 728/1497 cut-off events. For 1103/1127 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 6102 event pairs, 76 based on Foata normal form. 100/1593 useless extension candidates. Maximal degree in co-relation 3280. Up to 294 conditions per place. [2024-06-03 21:03:37,145 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 76 selfloop transitions, 6 changer transitions 2/91 dead transitions. [2024-06-03 21:03:37,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 91 transitions, 533 flow [2024-06-03 21:03:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 21:03:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 21:03:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-03 21:03:37,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6271929824561403 [2024-06-03 21:03:37,147 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 147 flow. Second operand 6 states and 143 transitions. [2024-06-03 21:03:37,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 91 transitions, 533 flow [2024-06-03 21:03:37,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 91 transitions, 497 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:37,150 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 185 flow [2024-06-03 21:03:37,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-06-03 21:03:37,151 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2024-06-03 21:03:37,151 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 185 flow [2024-06-03 21:03:37,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:37,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:37,151 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:37,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-03 21:03:37,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:03:37,367 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)] === [2024-06-03 21:03:37,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:37,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1857295652, now seen corresponding path program 1 times [2024-06-03 21:03:37,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:37,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810891590] [2024-06-03 21:03:37,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:37,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-06-03 21:03:37,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810891590] [2024-06-03 21:03:37,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810891590] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 21:03:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287290550] [2024-06-03 21:03:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:37,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:03:37,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:03:37,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-03 21:03:37,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-03 21:03:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:37,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 21 conjunts are in the unsatisfiable core [2024-06-03 21:03:37,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 21:03:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-06-03 21:03:38,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-03 21:03:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-06-03 21:03:38,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287290550] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-03 21:03:38,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-03 21:03:38,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-06-03 21:03:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727836144] [2024-06-03 21:03:38,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-03 21:03:38,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 21:03:38,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 21:03:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-03 21:03:38,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-03 21:03:38,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 185 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:38,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:38,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-03 21:03:38,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:38,474 INFO L124 PetriNetUnfolderBase]: 621/1331 cut-off events. [2024-06-03 21:03:38,474 INFO L125 PetriNetUnfolderBase]: For 1572/1572 co-relation queries the response was YES. [2024-06-03 21:03:38,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3489 conditions, 1331 events. 621/1331 cut-off events. For 1572/1572 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5364 event pairs, 213 based on Foata normal form. 22/1351 useless extension candidates. Maximal degree in co-relation 3008. Up to 583 conditions per place. [2024-06-03 21:03:38,479 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2024-06-03 21:03:38,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 357 flow [2024-06-03 21:03:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:03:38,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:03:38,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-03 21:03:38,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-06-03 21:03:38,480 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 185 flow. Second operand 5 states and 84 transitions. [2024-06-03 21:03:38,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 357 flow [2024-06-03 21:03:38,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 341 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:38,484 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2024-06-03 21:03:38,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2024-06-03 21:03:38,485 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2024-06-03 21:03:38,485 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2024-06-03 21:03:38,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:38,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 21:03:38,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 21:03:38,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 21:03:38,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 21:03:38,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-03 21:03:38,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:03:38,711 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-06-03 21:03:38,713 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 21:03:38,713 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 21:03:38,717 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 21:03:38,717 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 21:03:38,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 09:03:38 BasicIcfg [2024-06-03 21:03:38,718 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 21:03:38,718 INFO L158 Benchmark]: Toolchain (without parser) took 5945.61ms. Allocated memory was 167.8MB in the beginning and 220.2MB in the end (delta: 52.4MB). Free memory was 134.6MB in the beginning and 70.9MB in the end (delta: 63.7MB). Peak memory consumption was 114.5MB. Max. memory is 16.1GB. [2024-06-03 21:03:38,719 INFO L158 Benchmark]: Witness Parser took 1.17ms. Allocated memory is still 121.6MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:03:38,719 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:03:38,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 691.93ms. Allocated memory is still 167.8MB. Free memory was 133.6MB in the beginning and 99.4MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-03 21:03:38,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.34ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 96.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 21:03:38,721 INFO L158 Benchmark]: Boogie Preprocessor took 44.84ms. Allocated memory is still 167.8MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 21:03:38,721 INFO L158 Benchmark]: RCFGBuilder took 732.22ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 134.2MB in the end (delta: -40.1MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2024-06-03 21:03:38,722 INFO L158 Benchmark]: TraceAbstraction took 4428.23ms. Allocated memory was 167.8MB in the beginning and 220.2MB in the end (delta: 52.4MB). Free memory was 134.2MB in the beginning and 70.9MB in the end (delta: 63.3MB). Peak memory consumption was 114.7MB. Max. memory is 16.1GB. [2024-06-03 21:03:38,724 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 1.17ms. Allocated memory is still 121.6MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 691.93ms. Allocated memory is still 167.8MB. Free memory was 133.6MB in the beginning and 99.4MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.34ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 96.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.84ms. Allocated memory is still 167.8MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 732.22ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 134.2MB in the end (delta: -40.1MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4428.23ms. Allocated memory was 167.8MB in the beginning and 220.2MB in the end (delta: 52.4MB). Free memory was 134.2MB in the beginning and 70.9MB in the end (delta: 63.3MB). Peak memory consumption was 114.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 914]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 915]: 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, 57 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: 4.3s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 242 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 224 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 612 IncrementalHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 1 mSDtfsCounter, 612 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=5, InterpolantAutomatonStates: 24, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 236 NumberOfCodeBlocks, 236 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 1102 SizeOfPredicates, 2 NumberOfNonLiveVariables, 772 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 179/224 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 21:03:38,750 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