./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.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_bad.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-deagle/arithmetic_prog_bad.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/arithmetic_prog_bad.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 16:14:20,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 16:14:20,394 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 16:14:20,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 16:14:20,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 16:14:20,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 16:14:20,439 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 16:14:20,440 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 16:14:20,440 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 16:14:20,445 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 16:14:20,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 16:14:20,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 16:14:20,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 16:14:20,448 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 16:14:20,448 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 16:14:20,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 16:14:20,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 16:14:20,448 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 16:14:20,449 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 16:14:20,449 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 16:14:20,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 16:14:20,450 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 16:14:20,450 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 16:14:20,450 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 16:14:20,450 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 16:14:20,450 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 16:14:20,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 16:14:20,451 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 16:14:20,451 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 16:14:20,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 16:14:20,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 16:14:20,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 16:14:20,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 16:14:20,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 16:14:20,453 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 16:14:20,453 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 16:14:20,454 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 16:14:20,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 16:14:20,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 16:14:20,454 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 16:14:20,454 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 16:14:20,455 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 16:14:20,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 16:14:20,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 16:14:20,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 16:14:20,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 16:14:20,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 16:14:20,690 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 16:14:20,691 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 16:14:20,692 INFO L431 ainManager$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_bad.yml/witness.yml [2024-06-14 16:14:20,838 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 16:14:20,843 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 16:14:20,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2024-06-14 16:14:22,055 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 16:14:22,253 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 16:14:22,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2024-06-14 16:14:22,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa60d4800/25d4638bf4cb4e4f8f4e9c2d521aeadb/FLAG7e44a5adf [2024-06-14 16:14:22,280 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa60d4800/25d4638bf4cb4e4f8f4e9c2d521aeadb [2024-06-14 16:14:22,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 16:14:22,284 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 16:14:22,285 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 16:14:22,285 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 16:14:22,289 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 16:14:22,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 04:14:20" (1/2) ... [2024-06-14 16:14:22,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675f03ed and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 04:14:22, skipping insertion in model container [2024-06-14 16:14:22,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 04:14:20" (1/2) ... [2024-06-14 16:14:22,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31ef8bbb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 04:14:22, skipping insertion in model container [2024-06-14 16:14:22,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 04:14:22" (2/2) ... [2024-06-14 16:14:22,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675f03ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22, skipping insertion in model container [2024-06-14 16:14:22,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 04:14:22" (2/2) ... [2024-06-14 16:14:22,294 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 16:14:22,332 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 16:14:22,333 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))) [2024-06-14 16:14:22,333 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))) [2024-06-14 16:14:22,333 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-14 16:14:22,333 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 16:14:22,333 INFO L106 edCorrectnessWitness]: ghost_update [L895-L895] m_locked = 0; [2024-06-14 16:14:22,333 INFO L106 edCorrectnessWitness]: ghost_update [L895-L895] m_locked = 1; [2024-06-14 16:14:22,334 INFO L106 edCorrectnessWitness]: ghost_update [L881-L881] m_locked = 0; [2024-06-14 16:14:22,334 INFO L106 edCorrectnessWitness]: ghost_update [L881-L881] m_locked = 1; [2024-06-14 16:14:22,334 INFO L106 edCorrectnessWitness]: ghost_update [L898-L898] m_locked = 0; [2024-06-14 16:14:22,334 INFO L106 edCorrectnessWitness]: ghost_update [L893-L893] m_locked = 1; [2024-06-14 16:14:22,334 INFO L106 edCorrectnessWitness]: ghost_update [L883-L883] m_locked = 0; [2024-06-14 16:14:22,334 INFO L106 edCorrectnessWitness]: ghost_update [L913-L913] multithreaded = 1; [2024-06-14 16:14:22,334 INFO L106 edCorrectnessWitness]: ghost_update [L879-L879] m_locked = 1; [2024-06-14 16:14:22,373 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 16:14:22,707 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 16:14:22,718 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 [2024-06-14 16:14:22,817 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 16:14:22,871 INFO L206 MainTranslator]: Completed translation [2024-06-14 16:14:22,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22 WrapperNode [2024-06-14 16:14:22,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 16:14:22,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 16:14:22,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 16:14:22,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 16:14:22,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:22,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:22,931 INFO L138 Inliner]: procedures = 243, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2024-06-14 16:14:22,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 16:14:22,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 16:14:22,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 16:14:22,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 16:14:22,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:22,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:22,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:22,971 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]. [2024-06-14 16:14:22,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:22,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:22,981 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:22,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:22,992 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:22,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:23,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 16:14:23,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 16:14:23,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 16:14:23,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 16:14:23,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (1/1) ... [2024-06-14 16:14:23,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 16:14:23,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 16:14:23,033 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 16:14:23,058 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 16:14:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-06-14 16:14:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-06-14 16:14:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-06-14 16:14:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-14 16:14:23,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-14 16:14:23,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-14 16:14:23,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-14 16:14:23,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-14 16:14:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-14 16:14:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 16:14:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 16:14:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 16:14:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-14 16:14:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 16:14:23,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 16:14:23,080 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 16:14:23,232 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 16:14:23,234 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 16:14:23,484 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 16:14:23,484 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 16:14:23,690 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 16:14:23,690 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-14 16:14:23,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 04:14:23 BoogieIcfgContainer [2024-06-14 16:14:23,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 16:14:23,692 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 16:14:23,692 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 16:14:23,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 16:14:23,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 04:14:20" (1/4) ... [2024-06-14 16:14:23,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fca12d3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 04:14:23, skipping insertion in model container [2024-06-14 16:14:23,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 04:14:22" (2/4) ... [2024-06-14 16:14:23,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fca12d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 04:14:23, skipping insertion in model container [2024-06-14 16:14:23,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 04:14:22" (3/4) ... [2024-06-14 16:14:23,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fca12d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 04:14:23, skipping insertion in model container [2024-06-14 16:14:23,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 04:14:23" (4/4) ... [2024-06-14 16:14:23,701 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2024-06-14 16:14:23,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 16:14:23,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 16:14:23,725 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 16:14:23,750 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-14 16:14:23,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 90 flow [2024-06-14 16:14:23,793 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-06-14 16:14:23,793 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-14 16:14:23,795 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. [2024-06-14 16:14:23,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 90 flow [2024-06-14 16:14:23,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 77 flow [2024-06-14 16:14:23,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 16:14:23,809 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;@4fc69bf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 16:14:23,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 16:14:23,812 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 16:14:23,812 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-06-14 16:14:23,812 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 16:14:23,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 16:14:23,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 16:14:23,813 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 16:14:23,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 16:14:23,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1511394016, now seen corresponding path program 1 times [2024-06-14 16:14:23,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 16:14:23,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457871398] [2024-06-14 16:14:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 16:14:23,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 16:14:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 16:14:24,089 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 16:14:24,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 16:14:24,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457871398] [2024-06-14 16:14:24,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457871398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 16:14:24,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 16:14:24,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 16:14:24,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759228743] [2024-06-14 16:14:24,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 16:14:24,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 16:14:24,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 16:14:24,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 16:14:24,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 16:14:24,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-06-14 16:14:24,165 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) [2024-06-14 16:14:24,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 16:14:24,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-06-14 16:14:24,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 16:14:24,348 INFO L124 PetriNetUnfolderBase]: 507/853 cut-off events. [2024-06-14 16:14:24,349 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-06-14 16:14:24,351 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. [2024-06-14 16:14:24,356 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 37 selfloop transitions, 3 changer transitions 2/48 dead transitions. [2024-06-14 16:14:24,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 195 flow [2024-06-14 16:14:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 16:14:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 16:14:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-06-14 16:14:24,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-06-14 16:14:24,400 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 77 flow. Second operand 3 states and 70 transitions. [2024-06-14 16:14:24,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 195 flow [2024-06-14 16:14:24,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 187 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 16:14:24,404 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 94 flow [2024-06-14 16:14:24,406 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} [2024-06-14 16:14:24,408 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2024-06-14 16:14:24,408 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 94 flow [2024-06-14 16:14:24,409 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) [2024-06-14 16:14:24,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 16:14:24,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 16:14:24,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 16:14:24,409 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 16:14:24,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 16:14:24,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1667159093, now seen corresponding path program 1 times [2024-06-14 16:14:24,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 16:14:24,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989621469] [2024-06-14 16:14:24,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 16:14:24,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 16:14:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 16:14:24,503 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 16:14:24,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 16:14:24,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989621469] [2024-06-14 16:14:24,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989621469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 16:14:24,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 16:14:24,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 16:14:24,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062887868] [2024-06-14 16:14:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 16:14:24,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 16:14:24,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 16:14:24,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 16:14:24,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 16:14:24,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-14 16:14:24,512 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) [2024-06-14 16:14:24,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 16:14:24,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-14 16:14:24,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 16:14:24,644 INFO L124 PetriNetUnfolderBase]: 474/882 cut-off events. [2024-06-14 16:14:24,645 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2024-06-14 16:14:24,647 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. [2024-06-14 16:14:24,650 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 49 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2024-06-14 16:14:24,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 61 transitions, 264 flow [2024-06-14 16:14:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 16:14:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 16:14:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-06-14 16:14:24,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-06-14 16:14:24,651 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 94 flow. Second operand 4 states and 89 transitions. [2024-06-14 16:14:24,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 61 transitions, 264 flow [2024-06-14 16:14:24,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 61 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 16:14:24,653 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 131 flow [2024-06-14 16:14:24,653 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} [2024-06-14 16:14:24,668 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2024-06-14 16:14:24,669 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 131 flow [2024-06-14 16:14:24,669 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 16:14:24,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 16:14:24,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 16:14:24,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 16:14:24,669 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)] === [2024-06-14 16:14:24,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 16:14:24,670 INFO L85 PathProgramCache]: Analyzing trace with hash 84565304, now seen corresponding path program 1 times [2024-06-14 16:14:24,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 16:14:24,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528394613] [2024-06-14 16:14:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 16:14:24,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 16:14:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 16:14:24,719 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 16:14:24,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 16:14:24,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528394613] [2024-06-14 16:14:24,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528394613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 16:14:24,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 16:14:24,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 16:14:24,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897958881] [2024-06-14 16:14:24,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 16:14:24,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 16:14:24,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 16:14:24,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 16:14:24,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 16:14:24,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-14 16:14:24,724 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) [2024-06-14 16:14:24,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 16:14:24,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-14 16:14:24,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 16:14:24,856 INFO L124 PetriNetUnfolderBase]: 568/1121 cut-off events. [2024-06-14 16:14:24,856 INFO L125 PetriNetUnfolderBase]: For 596/610 co-relation queries the response was YES. [2024-06-14 16:14:24,858 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. [2024-06-14 16:14:24,862 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 41 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-06-14 16:14:24,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 260 flow [2024-06-14 16:14:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 16:14:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 16:14:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-14 16:14:24,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2024-06-14 16:14:24,863 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 131 flow. Second operand 3 states and 73 transitions. [2024-06-14 16:14:24,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 260 flow [2024-06-14 16:14:24,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 16:14:24,865 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 133 flow [2024-06-14 16:14:24,866 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} [2024-06-14 16:14:24,866 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2024-06-14 16:14:24,866 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 133 flow [2024-06-14 16:14:24,867 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) [2024-06-14 16:14:24,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 16:14:24,867 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] [2024-06-14 16:14:24,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 16:14:24,867 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)] === [2024-06-14 16:14:24,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 16:14:24,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1018183257, now seen corresponding path program 1 times [2024-06-14 16:14:24,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 16:14:24,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297205901] [2024-06-14 16:14:24,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 16:14:24,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 16:14:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 16:14:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 16:14:24,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 16:14:24,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297205901] [2024-06-14 16:14:24,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297205901] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 16:14:24,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156354461] [2024-06-14 16:14:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 16:14:24,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 16:14:24,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 16:14:24,930 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) [2024-06-14 16:14:24,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-14 16:14:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 16:14:25,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-14 16:14:25,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 16:14:25,057 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 [2024-06-14 16:14:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 16:14:25,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-14 16:14:25,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156354461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 16:14:25,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-14 16:14:25,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-06-14 16:14:25,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337328452] [2024-06-14 16:14:25,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 16:14:25,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 16:14:25,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 16:14:25,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 16:14:25,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 16:14:25,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-14 16:14:25,083 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) [2024-06-14 16:14:25,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 16:14:25,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-14 16:14:25,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 16:14:25,176 INFO L124 PetriNetUnfolderBase]: 310/699 cut-off events. [2024-06-14 16:14:25,176 INFO L125 PetriNetUnfolderBase]: For 376/382 co-relation queries the response was YES. [2024-06-14 16:14:25,177 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. [2024-06-14 16:14:25,180 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 32 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-14 16:14:25,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 257 flow [2024-06-14 16:14:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 16:14:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 16:14:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-06-14 16:14:25,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-06-14 16:14:25,181 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 133 flow. Second operand 3 states and 71 transitions. [2024-06-14 16:14:25,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 257 flow [2024-06-14 16:14:25,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 16:14:25,183 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 147 flow [2024-06-14 16:14:25,184 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} [2024-06-14 16:14:25,184 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-06-14 16:14:25,184 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 147 flow [2024-06-14 16:14:25,185 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) [2024-06-14 16:14:25,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 16:14:25,185 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] [2024-06-14 16:14:25,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-14 16:14:25,392 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 [2024-06-14 16:14:25,393 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)] === [2024-06-14 16:14:25,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 16:14:25,393 INFO L85 PathProgramCache]: Analyzing trace with hash -467601196, now seen corresponding path program 1 times [2024-06-14 16:14:25,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 16:14:25,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284936847] [2024-06-14 16:14:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 16:14:25,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 16:14:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 16:14:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 16:14:25,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 16:14:25,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284936847] [2024-06-14 16:14:25,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284936847] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 16:14:25,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866122880] [2024-06-14 16:14:25,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 16:14:25,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 16:14:25,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 16:14:25,446 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) [2024-06-14 16:14:25,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-14 16:14:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 16:14:25,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-14 16:14:25,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 16:14:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 16:14:25,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-14 16:14:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 16:14:25,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866122880] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-14 16:14:25,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-14 16:14:25,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-06-14 16:14:25,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513727389] [2024-06-14 16:14:25,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-14 16:14:25,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 16:14:25,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 16:14:25,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 16:14:25,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 16:14:25,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-14 16:14:25,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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 16:14:25,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 16:14:25,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-14 16:14:25,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 16:14:25,771 INFO L124 PetriNetUnfolderBase]: 576/1181 cut-off events. [2024-06-14 16:14:25,771 INFO L125 PetriNetUnfolderBase]: For 859/877 co-relation queries the response was YES. [2024-06-14 16:14:25,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3023 conditions, 1181 events. 576/1181 cut-off events. For 859/877 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4771 event pairs, 72 based on Foata normal form. 68/1245 useless extension candidates. Maximal degree in co-relation 2486. Up to 294 conditions per place. [2024-06-14 16:14:25,776 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 63 selfloop transitions, 5 changer transitions 1/76 dead transitions. [2024-06-14 16:14:25,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 76 transitions, 443 flow [2024-06-14 16:14:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 16:14:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 16:14:25,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-14 16:14:25,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6157894736842106 [2024-06-14 16:14:25,777 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 147 flow. Second operand 5 states and 117 transitions. [2024-06-14 16:14:25,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 76 transitions, 443 flow [2024-06-14 16:14:25,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 76 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 16:14:25,780 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 173 flow [2024-06-14 16:14:25,780 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=5, PETRI_FLOW=173, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-14 16:14:25,781 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-06-14 16:14:25,781 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 173 flow [2024-06-14 16:14:25,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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 16:14:25,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 16:14:25,781 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 16:14:25,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-14 16:14:25,993 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 [2024-06-14 16:14:25,994 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)] === [2024-06-14 16:14:25,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 16:14:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1583658948, now seen corresponding path program 1 times [2024-06-14 16:14:25,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 16:14:25,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363346168] [2024-06-14 16:14:25,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 16:14:25,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 16:14:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 16:14:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-06-14 16:14:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 16:14:26,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363346168] [2024-06-14 16:14:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363346168] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 16:14:26,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842766713] [2024-06-14 16:14:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 16:14:26,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 16:14:26,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 16:14:26,196 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) [2024-06-14 16:14:26,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-14 16:14:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 16:14:26,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjunts are in the unsatisfiable core [2024-06-14 16:14:26,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 16:14:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-14 16:14:26,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-14 16:14:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-14 16:14:26,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842766713] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-14 16:14:26,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-14 16:14:26,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-06-14 16:14:26,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025060754] [2024-06-14 16:14:26,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-14 16:14:26,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 16:14:26,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 16:14:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 16:14:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-14 16:14:26,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2024-06-14 16:14:26,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 173 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) [2024-06-14 16:14:26,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 16:14:26,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2024-06-14 16:14:26,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 16:14:26,760 INFO L124 PetriNetUnfolderBase]: 496/1058 cut-off events. [2024-06-14 16:14:26,760 INFO L125 PetriNetUnfolderBase]: For 1192/1192 co-relation queries the response was YES. [2024-06-14 16:14:26,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2780 conditions, 1058 events. 496/1058 cut-off events. For 1192/1192 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4206 event pairs, 169 based on Foata normal form. 22/1078 useless extension candidates. Maximal degree in co-relation 2300. Up to 474 conditions per place. [2024-06-14 16:14:26,763 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2024-06-14 16:14:26,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 56 transitions, 333 flow [2024-06-14 16:14:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 16:14:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 16:14:26,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-14 16:14:26,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-06-14 16:14:26,765 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 173 flow. Second operand 5 states and 84 transitions. [2024-06-14 16:14:26,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 56 transitions, 333 flow [2024-06-14 16:14:26,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 321 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-14 16:14:26,767 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2024-06-14 16:14:26,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2024-06-14 16:14:26,768 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2024-06-14 16:14:26,768 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2024-06-14 16:14:26,768 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) [2024-06-14 16:14:26,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 16:14:26,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 16:14:26,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 16:14:26,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 16:14:26,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-14 16:14:26,983 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 [2024-06-14 16:14:26,984 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-06-14 16:14:26,987 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 16:14:26,987 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 16:14:26,990 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 16:14:26,990 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 16:14:26,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 04:14:26 BasicIcfg [2024-06-14 16:14:26,991 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 16:14:26,993 INFO L158 Benchmark]: Toolchain (without parser) took 4708.87ms. Allocated memory was 182.5MB in the beginning and 295.7MB in the end (delta: 113.2MB). Free memory was 124.2MB in the beginning and 241.8MB in the end (delta: -117.6MB). Peak memory consumption was 150.1MB. Max. memory is 16.1GB. [2024-06-14 16:14:26,993 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 182.5MB. Free memory was 149.1MB in the beginning and 149.0MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 16:14:26,993 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 16:14:26,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 586.95ms. Allocated memory is still 182.5MB. Free memory was 124.2MB in the beginning and 89.2MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-14 16:14:26,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.44ms. Allocated memory is still 182.5MB. Free memory was 89.2MB in the beginning and 86.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 16:14:26,994 INFO L158 Benchmark]: Boogie Preprocessor took 76.19ms. Allocated memory is still 182.5MB. Free memory was 86.4MB in the beginning and 84.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 16:14:26,994 INFO L158 Benchmark]: RCFGBuilder took 681.21ms. Allocated memory is still 182.5MB. Free memory was 83.6MB in the beginning and 133.9MB in the end (delta: -50.4MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2024-06-14 16:14:26,995 INFO L158 Benchmark]: TraceAbstraction took 3300.25ms. Allocated memory was 182.5MB in the beginning and 295.7MB in the end (delta: 113.2MB). Free memory was 132.9MB in the beginning and 241.8MB in the end (delta: -108.9MB). Peak memory consumption was 158.1MB. Max. memory is 16.1GB. [2024-06-14 16:14:26,996 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 0.18ms. Allocated memory is still 182.5MB. Free memory was 149.1MB in the beginning and 149.0MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 586.95ms. Allocated memory is still 182.5MB. Free memory was 124.2MB in the beginning and 89.2MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.44ms. Allocated memory is still 182.5MB. Free memory was 89.2MB in the beginning and 86.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.19ms. Allocated memory is still 182.5MB. Free memory was 86.4MB in the beginning and 84.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 681.21ms. Allocated memory is still 182.5MB. Free memory was 83.6MB in the beginning and 133.9MB in the end (delta: -50.4MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3300.25ms. Allocated memory was 182.5MB in the beginning and 295.7MB in the end (delta: 113.2MB). Free memory was 132.9MB in the beginning and 241.8MB in the end (delta: -108.9MB). Peak memory consumption was 158.1MB. 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: 3.2s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 229 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 212 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 578 IncrementalHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 1 mSDtfsCounter, 578 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=5, InterpolantAutomatonStates: 23, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 271 ConstructedInterpolants, 0 QuantifiedInterpolants, 946 SizeOfPredicates, 2 NumberOfNonLiveVariables, 720 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 84/116 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 16:14:27,017 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