./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.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/protection/time_var_mutex.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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-atomic/time_var_mutex.i ./goblint.2024-05-21_14-57-05.files/protection/time_var_mutex.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-cde23df-m [2024-06-14 11:18:18,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:18:18,256 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:18:18,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:18:18,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:18:18,289 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:18:18,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:18:18,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:18:18,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:18:18,295 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:18:18,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:18:18,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:18:18,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:18:18,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:18:18,298 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:18:18,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:18:18,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:18:18,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:18:18,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:18:18,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:18:18,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:18:18,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:18:18,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:18:18,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:18:18,300 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:18:18,300 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:18:18,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:18:18,301 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:18:18,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:18:18,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:18:18,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:18:18,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:18:18,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:18:18,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:18:18,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:18:18,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:18:18,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:18:18,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:18:18,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:18:18,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:18:18,304 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:18:18,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:18:18,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:18:18,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:18:18,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:18:18,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:18:18,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:18:18,538 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:18:18,538 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:18:18,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/time_var_mutex.yml/witness.yml [2024-06-14 11:18:18,652 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:18:18,652 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:18:18,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2024-06-14 11:18:19,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:18:19,735 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:18:19,735 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2024-06-14 11:18:19,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1694c04e6/7bf572b71e424be898dfe1e176cb41a2/FLAG32016296b [2024-06-14 11:18:19,755 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1694c04e6/7bf572b71e424be898dfe1e176cb41a2 [2024-06-14 11:18:19,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:18:19,757 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:18:19,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:18:19,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:18:19,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:18:19,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:18" (1/2) ... [2024-06-14 11:18:19,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b00d5bd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:19, skipping insertion in model container [2024-06-14 11:18:19,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:18" (1/2) ... [2024-06-14 11:18:19,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35df34bc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:18:19, skipping insertion in model container [2024-06-14 11:18:19,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:18:19" (2/2) ... [2024-06-14 11:18:19,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b00d5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:19, skipping insertion in model container [2024-06-14 11:18:19,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:18:19" (2/2) ... [2024-06-14 11:18:19,768 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:18:19,791 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:18:19,792 INFO L97 edCorrectnessWitness]: Location invariant before [L721-L721] ((! multithreaded || ((0 <= busy && busy <= 1) && (busy == 0 || busy == 1))) && (! multithreaded || ((0 <= inode && inode <= 1) && (inode == 0 || inode == 1)))) && (! multithreaded || ((0 <= block && block <= 1) && (block == 0 || block == 1))) [2024-06-14 11:18:19,793 INFO L97 edCorrectnessWitness]: Location invariant before [L722-L722] ((! multithreaded || ((0 <= busy && busy <= 1) && (busy == 0 || busy == 1))) && (! multithreaded || ((0 <= inode && inode <= 1) && (inode == 0 || inode == 1)))) && (! multithreaded || ((0 <= block && block <= 1) && (block == 0 || block == 1))) [2024-06-14 11:18:19,793 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:18:19,793 INFO L103 edCorrectnessWitness]: ghost_variable m_inode_locked = 0 [2024-06-14 11:18:19,793 INFO L103 edCorrectnessWitness]: ghost_variable m_busy_locked = 0 [2024-06-14 11:18:19,793 INFO L106 edCorrectnessWitness]: ghost_update [L707-L707] m_busy_locked = 1; [2024-06-14 11:18:19,793 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] multithreaded = 1; [2024-06-14 11:18:19,793 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] m_busy_locked = 0; [2024-06-14 11:18:19,793 INFO L106 edCorrectnessWitness]: ghost_update [L712-L712] m_busy_locked = 0; [2024-06-14 11:18:19,794 INFO L106 edCorrectnessWitness]: ghost_update [L694-L694] m_inode_locked = 1; [2024-06-14 11:18:19,794 INFO L106 edCorrectnessWitness]: ghost_update [L696-L696] m_busy_locked = 1; [2024-06-14 11:18:19,794 INFO L106 edCorrectnessWitness]: ghost_update [L703-L703] m_inode_locked = 0; [2024-06-14 11:18:19,829 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:18:20,022 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:18:20,031 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 [2024-06-14 11:18:20,103 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:18:20,131 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:18:20,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20 WrapperNode [2024-06-14 11:18:20,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:18:20,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:18:20,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:18:20,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:18:20,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,179 INFO L138 Inliner]: procedures = 169, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 104 [2024-06-14 11:18:20,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:18:20,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:18:20,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:18:20,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:18:20,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,214 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,231 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-06-14 11:18:20,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:18:20,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:18:20,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:18:20,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:18:20,283 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (1/1) ... [2024-06-14 11:18:20,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:18:20,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:18:20,310 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) [2024-06-14 11:18:20,311 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 [2024-06-14 11:18:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2024-06-14 11:18:20,346 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2024-06-14 11:18:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2024-06-14 11:18:20,346 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2024-06-14 11:18:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-14 11:18:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:18:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:18:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 11:18:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-14 11:18:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-14 11:18:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:18:20,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:18:20,348 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:18:20,437 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:18:20,439 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:18:20,582 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:18:20,582 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:18:20,688 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:18:20,690 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:18:20,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:18:20 BoogieIcfgContainer [2024-06-14 11:18:20,691 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:18:20,694 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:18:20,694 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:18:20,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:18:20,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:18:18" (1/4) ... [2024-06-14 11:18:20,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa6e858 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:18:20, skipping insertion in model container [2024-06-14 11:18:20,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:18:19" (2/4) ... [2024-06-14 11:18:20,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa6e858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:18:20, skipping insertion in model container [2024-06-14 11:18:20,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:18:20" (3/4) ... [2024-06-14 11:18:20,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa6e858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:18:20, skipping insertion in model container [2024-06-14 11:18:20,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:18:20" (4/4) ... [2024-06-14 11:18:20,699 INFO L112 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2024-06-14 11:18:20,711 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:18:20,711 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:18:20,711 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:18:20,757 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-14 11:18:20,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 80 flow [2024-06-14 11:18:20,817 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2024-06-14 11:18:20,817 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-14 11:18:20,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 31 events. 1/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-06-14 11:18:20,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 80 flow [2024-06-14 11:18:20,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 28 transitions, 62 flow [2024-06-14 11:18:20,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:18:20,844 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;@6f3ebfc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:18:20,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:18:20,852 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:18:20,852 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 11:18:20,852 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:18:20,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:20,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:18:20,854 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)] === [2024-06-14 11:18:20,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:20,860 INFO L85 PathProgramCache]: Analyzing trace with hash 48842631, now seen corresponding path program 1 times [2024-06-14 11:18:20,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:20,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269772793] [2024-06-14 11:18:20,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:20,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:21,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269772793] [2024-06-14 11:18:21,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269772793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:21,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:21,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:18:21,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815831524] [2024-06-14 11:18:21,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:21,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:18:21,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:21,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:18:21,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:18:21,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:18:21,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:21,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:21,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:18:21,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:21,381 INFO L124 PetriNetUnfolderBase]: 186/354 cut-off events. [2024-06-14 11:18:21,381 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-14 11:18:21,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 354 events. 186/354 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1341 event pairs, 66 based on Foata normal form. 27/370 useless extension candidates. Maximal degree in co-relation 706. Up to 265 conditions per place. [2024-06-14 11:18:21,385 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 28 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-06-14 11:18:21,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 139 flow [2024-06-14 11:18:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:18:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:18:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-14 11:18:21,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-14 11:18:21,396 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 62 flow. Second operand 3 states and 54 transitions. [2024-06-14 11:18:21,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 139 flow [2024-06-14 11:18:21,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:21,399 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 68 flow [2024-06-14 11:18:21,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-06-14 11:18:21,404 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2024-06-14 11:18:21,405 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 68 flow [2024-06-14 11:18:21,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:18:21,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:21,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:21,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:18:21,405 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)] === [2024-06-14 11:18:21,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash 199870207, now seen corresponding path program 1 times [2024-06-14 11:18:21,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:21,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806380639] [2024-06-14 11:18:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:21,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:21,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:21,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806380639] [2024-06-14 11:18:21,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806380639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:21,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:21,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:18:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593718284] [2024-06-14 11:18:21,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:21,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:18:21,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:21,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:18:21,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:18:21,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:18:21,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 68 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) [2024-06-14 11:18:21,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:21,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:18:21,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:21,684 INFO L124 PetriNetUnfolderBase]: 166/322 cut-off events. [2024-06-14 11:18:21,684 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-06-14 11:18:21,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 322 events. 166/322 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1219 event pairs, 54 based on Foata normal form. 12/329 useless extension candidates. Maximal degree in co-relation 692. Up to 175 conditions per place. [2024-06-14 11:18:21,689 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 35 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-06-14 11:18:21,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 180 flow [2024-06-14 11:18:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:18:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:18:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-14 11:18:21,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-14 11:18:21,692 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 68 flow. Second operand 4 states and 68 transitions. [2024-06-14 11:18:21,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 180 flow [2024-06-14 11:18:21,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:18:21,696 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 76 flow [2024-06-14 11:18:21,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2024-06-14 11:18:21,697 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2024-06-14 11:18:21,697 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 76 flow [2024-06-14 11:18:21,698 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) [2024-06-14 11:18:21,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:21,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:21,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:18:21,702 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)] === [2024-06-14 11:18:21,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1198224611, now seen corresponding path program 1 times [2024-06-14 11:18:21,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:21,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863757827] [2024-06-14 11:18:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:21,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:21,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:21,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863757827] [2024-06-14 11:18:21,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863757827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:21,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:21,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:18:21,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232840842] [2024-06-14 11:18:21,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:21,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:18:21,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:21,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:18:21,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:18:21,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:18:21,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-06-14 11:18:21,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:21,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:18:21,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:21,932 INFO L124 PetriNetUnfolderBase]: 172/334 cut-off events. [2024-06-14 11:18:21,932 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-06-14 11:18:21,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 334 events. 172/334 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1238 event pairs, 64 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 757. Up to 130 conditions per place. [2024-06-14 11:18:21,934 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 43 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2024-06-14 11:18:21,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 224 flow [2024-06-14 11:18:21,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:18:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:18:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-14 11:18:21,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-06-14 11:18:21,937 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 76 flow. Second operand 5 states and 84 transitions. [2024-06-14 11:18:21,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 224 flow [2024-06-14 11:18:21,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 51 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 11:18:21,941 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 84 flow [2024-06-14 11:18:21,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2024-06-14 11:18:21,942 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-06-14 11:18:21,942 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 84 flow [2024-06-14 11:18:21,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-06-14 11:18:21,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:18:21,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:18:21,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:18:21,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:18:21,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:18:21,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1512122299, now seen corresponding path program 1 times [2024-06-14 11:18:21,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:18:21,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066421792] [2024-06-14 11:18:21,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:18:21,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:18:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:18:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:18:22,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:18:22,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066421792] [2024-06-14 11:18:22,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066421792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:18:22,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:18:22,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:18:22,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548690595] [2024-06-14 11:18:22,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:18:22,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:18:22,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:18:22,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:18:22,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:18:22,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:18:22,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-06-14 11:18:22,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:18:22,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:18:22,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:18:22,113 INFO L124 PetriNetUnfolderBase]: 148/292 cut-off events. [2024-06-14 11:18:22,113 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-06-14 11:18:22,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 292 events. 148/292 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1070 event pairs, 52 based on Foata normal form. 18/306 useless extension candidates. Maximal degree in co-relation 663. Up to 108 conditions per place. [2024-06-14 11:18:22,114 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2024-06-14 11:18:22,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 212 flow [2024-06-14 11:18:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:18:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:18:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-14 11:18:22,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695 [2024-06-14 11:18:22,117 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 84 flow. Second operand 5 states and 82 transitions. [2024-06-14 11:18:22,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 212 flow [2024-06-14 11:18:22,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 11:18:22,118 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2024-06-14 11:18:22,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2024-06-14 11:18:22,119 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2024-06-14 11:18:22,120 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2024-06-14 11:18:22,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-06-14 11:18:22,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 11:18:22,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 11:18:22,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 11:18:22,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 11:18:22,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:18:22,123 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-06-14 11:18:22,126 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 11:18:22,126 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 11:18:22,132 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 11:18:22,132 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 11:18:22,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 11:18:22 BasicIcfg [2024-06-14 11:18:22,133 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 11:18:22,133 INFO L158 Benchmark]: Toolchain (without parser) took 2376.18ms. Allocated memory is still 167.8MB. Free memory was 93.8MB in the beginning and 73.1MB in the end (delta: 20.7MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2024-06-14 11:18:22,133 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 123.7MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:18:22,133 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory is still 141.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:18:22,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.78ms. Allocated memory is still 167.8MB. Free memory was 93.5MB in the beginning and 66.8MB in the end (delta: 26.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-14 11:18:22,134 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.59ms. Allocated memory is still 167.8MB. Free memory was 66.8MB in the beginning and 138.2MB in the end (delta: -71.4MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2024-06-14 11:18:22,134 INFO L158 Benchmark]: Boogie Preprocessor took 88.40ms. Allocated memory is still 167.8MB. Free memory was 138.2MB in the beginning and 136.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:18:22,138 INFO L158 Benchmark]: RCFGBuilder took 408.63ms. Allocated memory is still 167.8MB. Free memory was 136.1MB in the beginning and 101.8MB in the end (delta: 34.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-14 11:18:22,138 INFO L158 Benchmark]: TraceAbstraction took 1439.06ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 73.1MB in the end (delta: 27.3MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2024-06-14 11:18:22,139 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.14ms. Allocated memory is still 123.7MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory is still 141.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 373.78ms. Allocated memory is still 167.8MB. Free memory was 93.5MB in the beginning and 66.8MB in the end (delta: 26.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.59ms. Allocated memory is still 167.8MB. Free memory was 66.8MB in the beginning and 138.2MB in the end (delta: -71.4MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.40ms. Allocated memory is still 167.8MB. Free memory was 138.2MB in the beginning and 136.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 408.63ms. Allocated memory is still 167.8MB. Free memory was 136.1MB in the beginning and 101.8MB in the end (delta: 34.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1439.06ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 73.1MB in the end (delta: 27.3MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 722]: 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, 53 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 307 IncrementalHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 4 mSDtfsCounter, 307 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 217 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2024-06-14 11:18:22,178 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