/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-MCRwithDepranks-Lazy-NoForkJoinOpt.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-04 04:56:39,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-04 04:56:39,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-04 04:56:39,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-04 04:56:39,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-04 04:56:39,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-04 04:56:39,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-04 04:56:39,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-04 04:56:39,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-04 04:56:39,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-04 04:56:39,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-04 04:56:39,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-04 04:56:39,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-04 04:56:39,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-04 04:56:39,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-04 04:56:39,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-04 04:56:39,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-04 04:56:39,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-04 04:56:39,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-04 04:56:39,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-04 04:56:39,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-04 04:56:39,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-04 04:56:39,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-04 04:56:39,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-04 04:56:39,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-04 04:56:39,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-04 04:56:39,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-04 04:56:39,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-04 04:56:39,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-04 04:56:39,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-04 04:56:39,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-04 04:56:39,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-04 04:56:39,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-04 04:56:39,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-04 04:56:39,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-04 04:56:39,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-04 04:56:39,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-04 04:56:39,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-04 04:56:39,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-04 04:56:39,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-04 04:56:39,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-04 04:56:39,773 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-MCRwithDepranks-Lazy-NoForkJoinOpt.epf [2022-03-04 04:56:39,790 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-04 04:56:39,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-04 04:56:39,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-04 04:56:39,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-04 04:56:39,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-04 04:56:39,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-04 04:56:39,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-04 04:56:39,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-04 04:56:39,791 INFO L138 SettingsManager]: * Use SBE=true [2022-03-04 04:56:39,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-04 04:56:39,792 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-04 04:56:39,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-04 04:56:39,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-04 04:56:39,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-04 04:56:39,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-04 04:56:39,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-04 04:56:39,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-04 04:56:39,792 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-04 04:56:39,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-04 04:56:39,792 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-04 04:56:39,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-04 04:56:39,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-04 04:56:39,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-04 04:56:39,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-04 04:56:39,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-04 04:56:39,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 04:56:39,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-04 04:56:39,793 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-04 04:56:39,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-04 04:56:39,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-04 04:56:39,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-04 04:56:39,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-04 04:56:39,794 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-04 04:56:39,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-04 04:56:39,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-04 04:56:39,794 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-04 04:56:39,794 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-04 04:56:39,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-04 04:56:39,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-04 04:56:39,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-04 04:56:39,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-04 04:56:39,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-04 04:56:39,965 INFO L275 PluginConnector]: CDTParser initialized [2022-03-04 04:56:39,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2022-03-04 04:56:40,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ee00ed3e/b159cb7bc1ff4acebefb089c412af809/FLAG7cf2412f3 [2022-03-04 04:56:40,364 INFO L306 CDTParser]: Found 1 translation units. [2022-03-04 04:56:40,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitUnsafe.c [2022-03-04 04:56:40,365 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-04 04:56:40,366 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-04 04:56:40,367 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-04 04:56:40,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ee00ed3e/b159cb7bc1ff4acebefb089c412af809/FLAG7cf2412f3 [2022-03-04 04:56:40,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ee00ed3e/b159cb7bc1ff4acebefb089c412af809 [2022-03-04 04:56:40,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-04 04:56:40,408 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-04 04:56:40,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-04 04:56:40,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-04 04:56:40,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-04 04:56:40,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17759c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40, skipping insertion in model container [2022-03-04 04:56:40,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-04 04:56:40,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-04 04:56:40,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-04 04:56:40,574 INFO L203 MainTranslator]: Completed pre-run [2022-03-04 04:56:40,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-04 04:56:40,587 INFO L208 MainTranslator]: Completed translation [2022-03-04 04:56:40,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40 WrapperNode [2022-03-04 04:56:40,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-04 04:56:40,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-04 04:56:40,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-04 04:56:40,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-04 04:56:40,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,607 INFO L137 Inliner]: procedures = 9, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-03-04 04:56:40,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-04 04:56:40,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-04 04:56:40,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-04 04:56:40,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-04 04:56:40,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-04 04:56:40,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-04 04:56:40,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-04 04:56:40,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-04 04:56:40,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40" (1/1) ... [2022-03-04 04:56:40,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 04:56:40,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 04:56:40,646 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) [2022-03-04 04:56:40,662 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 [2022-03-04 04:56:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-04 04:56:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-04 04:56:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-04 04:56:40,672 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-04 04:56:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-04 04:56:40,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-04 04:56:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-04 04:56:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-04 04:56:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-04 04:56:40,673 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-04 04:56:40,714 INFO L234 CfgBuilder]: Building ICFG [2022-03-04 04:56:40,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-04 04:56:40,782 INFO L275 CfgBuilder]: Performing block encoding [2022-03-04 04:56:40,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-04 04:56:40,785 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-04 04:56:40,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:56:40 BoogieIcfgContainer [2022-03-04 04:56:40,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-04 04:56:40,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-04 04:56:40,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-04 04:56:40,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-04 04:56:40,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 04:56:40" (1/3) ... [2022-03-04 04:56:40,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65fd9472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:56:40, skipping insertion in model container [2022-03-04 04:56:40,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:56:40" (2/3) ... [2022-03-04 04:56:40,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65fd9472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:56:40, skipping insertion in model container [2022-03-04 04:56:40,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:56:40" (3/3) ... [2022-03-04 04:56:40,791 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitUnsafe.c [2022-03-04 04:56:40,794 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-04 04:56:40,795 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-04 04:56:40,795 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-04 04:56:40,795 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-04 04:56:40,809 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,809 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,810 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,810 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,810 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,810 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,810 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,810 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,811 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,811 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,811 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,811 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,813 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,814 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,814 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,814 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-04 04:56:40,817 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-04 04:56:40,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-04 04:56:40,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 04:56:40,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-03-04 04:56:40,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-03-04 04:56:40,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-04 04:56:40,959 INFO L339 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=false, mMcrOverapproximateWrwc=true [2022-03-04 04:56:40,960 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-04 04:56:41,008 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 29 transitions and produced 30 states. [2022-03-04 04:56:41,010 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-04 04:56:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 04:56:41,018 INFO L85 PathProgramCache]: Analyzing trace with hash 742844193, now seen corresponding path program 1 times [2022-03-04 04:56:41,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 04:56:41,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211576441] [2022-03-04 04:56:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 04:56:41,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 04:56:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 04:56:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 04:56:41,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 04:56:41,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211576441] [2022-03-04 04:56:41,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211576441] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 04:56:41,185 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-04 04:56:41,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-04 04:56:41,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829084785] [2022-03-04 04:56:41,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 04:56:41,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-04 04:56:41,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 04:56:41,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-04 04:56:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-04 04:56:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 04:56:41,209 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 04:56:41,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2022-03-04 04:56:41,211 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 04:56:41,219 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 30 transitions and produced 31 states. [2022-03-04 04:56:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 04:56:41,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-04 04:56:41,221 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-04 04:56:41,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 04:56:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash -941166398, now seen corresponding path program 1 times [2022-03-04 04:56:41,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 04:56:41,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354001655] [2022-03-04 04:56:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 04:56:41,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 04:56:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-04 04:56:41,261 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-04 04:56:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-04 04:56:41,310 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-04 04:56:41,311 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-04 04:56:41,312 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-03-04 04:56:41,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-04 04:56:41,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-04 04:56:41,318 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-04 04:56:41,321 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-04 04:56:41,321 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-04 04:56:41,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 04:56:41 BasicIcfg [2022-03-04 04:56:41,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-04 04:56:41,350 INFO L158 Benchmark]: Toolchain (without parser) took 942.46ms. Allocated memory is still 182.5MB. Free memory was 126.3MB in the beginning and 114.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2022-03-04 04:56:41,351 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 144.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-04 04:56:41,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.43ms. Allocated memory is still 182.5MB. Free memory was 126.1MB in the beginning and 154.7MB in the end (delta: -28.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-04 04:56:41,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.55ms. Allocated memory is still 182.5MB. Free memory was 154.7MB in the beginning and 153.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-04 04:56:41,353 INFO L158 Benchmark]: Boogie Preprocessor took 12.14ms. Allocated memory is still 182.5MB. Free memory was 153.1MB in the beginning and 152.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-04 04:56:41,355 INFO L158 Benchmark]: RCFGBuilder took 165.22ms. Allocated memory is still 182.5MB. Free memory was 152.0MB in the beginning and 142.6MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-04 04:56:41,355 INFO L158 Benchmark]: TraceAbstraction took 562.25ms. Allocated memory is still 182.5MB. Free memory was 142.1MB in the beginning and 114.9MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-03-04 04:56:41,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 144.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 178.43ms. Allocated memory is still 182.5MB. Free memory was 126.1MB in the beginning and 154.7MB in the end (delta: -28.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.55ms. Allocated memory is still 182.5MB. Free memory was 154.7MB in the beginning and 153.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.14ms. Allocated memory is still 182.5MB. Free memory was 153.1MB in the beginning and 152.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 165.22ms. Allocated memory is still 182.5MB. Free memory was 152.0MB in the beginning and 142.6MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 562.25ms. Allocated memory is still 182.5MB. Free memory was 142.1MB in the beginning and 114.9MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L24] 0 pthread_t th_id; VAL [th_id={2:0}] [L25] FCALL, FORK 0 pthread_create(&th_id, NULL, foo, NULL) VAL [n={0:0}, pthread_create(&th_id, NULL, foo, NULL)=-1, th_id={2:0}] [L26] 0 \read(th_id) VAL [\read(th_id)=-1, n={0:0}, th_id={2:0}] [L17] COND TRUE 1 1 VAL [n={0:0}, n={0:0}] [L26] FCALL, JOIN 1 pthread_join(th_id, NULL) VAL [\read(th_id)=-1, \result={0:0}, n={0:0}, n={0:0}, th_id={2:0}] [L28] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, n={0:0}, n={0:0}, th_id={2:0}] - UnprovableResult [Line: 25]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 40 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-04 04:56:41,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-03-04 04:56:41,607 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...