/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/atomic.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 13:52:23,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 13:52:23,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 13:52:23,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-09 13:52:23,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-09 13:52:23,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-09 13:52:23,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-09 13:52:23,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-09 13:52:23,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-09 13:52:23,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-09 13:52:23,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-09 13:52:23,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-09 13:52:23,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-09 13:52:23,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-09 13:52:23,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-09 13:52:23,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-09 13:52:23,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-09 13:52:23,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-09 13:52:23,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-09 13:52:23,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-09 13:52:23,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-09 13:52:23,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-09 13:52:23,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-09 13:52:23,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-09 13:52:23,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-09 13:52:23,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-09 13:52:23,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-09 13:52:23,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-09 13:52:23,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-09 13:52:23,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-09 13:52:23,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-09 13:52:23,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-09 13:52:23,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-09 13:52:23,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-09 13:52:23,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-09 13:52:23,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-09 13:52:23,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf [2022-02-09 13:52:23,497 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 13:52:23,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 13:52:23,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 13:52:23,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 13:52:23,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 13:52:23,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 13:52:23,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 13:52:23,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 13:52:23,499 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 13:52:23,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 13:52:23,500 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 13:52:23,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 13:52:23,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 13:52:23,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 13:52:23,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 13:52:23,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 13:52:23,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 13:52:23,500 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 13:52:23,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 13:52:23,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 13:52:23,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 13:52:23,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 13:52:23,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 13:52:23,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 13:52:23,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 13:52:23,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 13:52:23,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 13:52:23,502 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-09 13:52:23,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 13:52:23,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 13:52:23,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 13:52:23,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 13:52:23,502 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 13:52:23,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-09 13:52:23,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 13:52:23,503 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-02-09 13:52:23,503 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-02-09 13:52:23,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 13:52:23,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 13:52:23,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 13:52:23,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 13:52:23,677 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 13:52:23,678 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 13:52:23,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/atomic.bpl [2022-02-09 13:52:23,679 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/atomic.bpl' [2022-02-09 13:52:23,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 13:52:23,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 13:52:23,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 13:52:23,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 13:52:23,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 13:52:23,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "atomic.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:23" (1/1) ... [2022-02-09 13:52:23,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "atomic.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:23" (1/1) ... [2022-02-09 13:52:23,718 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 13:52:23,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 13:52:23,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 13:52:23,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 13:52:23,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 13:52:23,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "atomic.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:23" (1/1) ... [2022-02-09 13:52:23,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "atomic.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:23" (1/1) ... [2022-02-09 13:52:23,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "atomic.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:23" (1/1) ... [2022-02-09 13:52:23,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "atomic.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:23" (1/1) ... [2022-02-09 13:52:23,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "atomic.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:23" (1/1) ... [2022-02-09 13:52:23,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "atomic.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:23" (1/1) ... [2022-02-09 13:52:23,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "atomic.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:23" (1/1) ... [2022-02-09 13:52:23,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 13:52:23,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 13:52:23,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 13:52:23,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 13:52:23,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "atomic.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:23" (1/1) ... [2022-02-09 13:52:23,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 13:52:23,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 13:52:23,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-09 13:52:23,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-09 13:52:23,795 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-02-09 13:52:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-09 13:52:23,795 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-09 13:52:23,795 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-09 13:52:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 13:52:23,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 13:52:23,796 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2022-02-09 13:52:23,796 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 13:52:23,828 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 13:52:23,829 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 13:52:23,875 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 13:52:23,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 13:52:23,887 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 13:52:23,889 INFO L202 PluginConnector]: Adding new model atomic.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 01:52:23 BoogieIcfgContainer [2022-02-09 13:52:23,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 13:52:23,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 13:52:23,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 13:52:23,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 13:52:23,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "atomic.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:23" (1/2) ... [2022-02-09 13:52:23,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7952782 and model type atomic.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 01:52:23, skipping insertion in model container [2022-02-09 13:52:23,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "atomic.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 01:52:23" (2/2) ... [2022-02-09 13:52:23,893 INFO L111 eAbstractionObserver]: Analyzing ICFG atomic.bpl [2022-02-09 13:52:23,896 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 13:52:23,896 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 13:52:23,896 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 0 error locations. [2022-02-09 13:52:23,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7952782 and model type atomic.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 01:52:23, skipping insertion in model container [2022-02-09 13:52:23,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 13:52:23,898 INFO L158 Benchmark]: Toolchain (without parser) took 201.64ms. Allocated memory is still 198.2MB. Free memory was 163.4MB in the beginning and 151.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-09 13:52:23,899 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 164.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 13:52:23,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.55ms. Allocated memory is still 198.2MB. Free memory was 163.4MB in the beginning and 161.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-09 13:52:23,900 INFO L158 Benchmark]: Boogie Preprocessor took 8.90ms. Allocated memory is still 198.2MB. Free memory was 161.8MB in the beginning and 161.0MB in the end (delta: 853.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 13:52:23,900 INFO L158 Benchmark]: RCFGBuilder took 158.78ms. Allocated memory is still 198.2MB. Free memory was 160.9MB in the beginning and 152.7MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-09 13:52:23,901 INFO L158 Benchmark]: TraceAbstraction took 7.63ms. Allocated memory is still 198.2MB. Free memory was 152.2MB in the beginning and 151.3MB in the end (delta: 875.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 13:52:23,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 164.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.55ms. Allocated memory is still 198.2MB. Free memory was 163.4MB in the beginning and 161.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 8.90ms. Allocated memory is still 198.2MB. Free memory was 161.8MB in the beginning and 161.0MB in the end (delta: 853.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 158.78ms. Allocated memory is still 198.2MB. Free memory was 160.9MB in the beginning and 152.7MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 7.63ms. Allocated memory is still 198.2MB. Free memory was 152.2MB in the beginning and 151.3MB in the end (delta: 875.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. RESULT: Ultimate proved your program to be correct! [2022-02-09 13:52:23,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...