./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/pthread-atomic/gcd-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/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/AutomizerTermination.xml -i ../sv-benchmarks/c/pthread-atomic/gcd-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bcc2c6a6cd7cbcbc8283eb33ec126985d628a9eb ............................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: analysis for sequential programs does not support fork/join --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 22:00:40,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 22:00:40,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 22:00:40,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 22:00:40,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 22:00:40,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 22:00:40,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 22:00:40,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 22:00:40,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 22:00:40,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 22:00:40,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 22:00:40,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 22:00:40,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 22:00:40,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 22:00:40,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 22:00:40,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 22:00:40,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 22:00:40,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 22:00:40,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 22:00:40,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 22:00:40,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 22:00:40,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 22:00:40,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 22:00:40,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 22:00:40,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 22:00:40,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 22:00:40,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 22:00:40,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 22:00:40,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 22:00:40,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 22:00:40,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 22:00:40,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 22:00:40,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 22:00:40,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 22:00:40,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 22:00:40,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 22:00:40,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 22:00:40,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 22:00:40,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 22:00:40,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 22:00:40,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 22:00:40,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 22:00:40,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 22:00:40,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 22:00:40,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 22:00:40,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 22:00:40,619 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 22:00:40,619 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 22:00:40,619 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 22:00:40,620 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 22:00:40,620 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 22:00:40,620 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 22:00:40,621 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 22:00:40,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 22:00:40,622 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 22:00:40,622 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 22:00:40,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 22:00:40,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 22:00:40,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 22:00:40,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 22:00:40,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 22:00:40,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 22:00:40,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 22:00:40,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 22:00:40,623 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 22:00:40,624 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 22:00:40,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 22:00:40,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 22:00:40,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 22:00:40,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 22:00:40,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 22:00:40,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 22:00:40,626 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 22:00:40,627 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcc2c6a6cd7cbcbc8283eb33ec126985d628a9eb [2021-07-06 22:00:40,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 22:00:40,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 22:00:40,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 22:00:40,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 22:00:40,955 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 22:00:40,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/gcd-2.i [2021-07-06 22:00:41,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c4758e8/8a39dafd2d9c45f69493ce8544b7fc2e/FLAG915499660 [2021-07-06 22:00:41,557 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 22:00:41,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/gcd-2.i [2021-07-06 22:00:41,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c4758e8/8a39dafd2d9c45f69493ce8544b7fc2e/FLAG915499660 [2021-07-06 22:00:41,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c4758e8/8a39dafd2d9c45f69493ce8544b7fc2e [2021-07-06 22:00:41,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 22:00:41,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 22:00:41,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 22:00:41,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 22:00:41,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 22:00:41,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 10:00:41" (1/1) ... [2021-07-06 22:00:41,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b2fd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:41, skipping insertion in model container [2021-07-06 22:00:41,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 10:00:41" (1/1) ... [2021-07-06 22:00:41,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 22:00:41,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 22:00:42,075 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/gcd-2.i[938,951] [2021-07-06 22:00:42,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 22:00:42,257 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 22:00:42,271 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/gcd-2.i[938,951] [2021-07-06 22:00:42,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 22:00:42,392 INFO L208 MainTranslator]: Completed translation [2021-07-06 22:00:42,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42 WrapperNode [2021-07-06 22:00:42,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 22:00:42,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 22:00:42,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 22:00:42,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 22:00:42,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42" (1/1) ... [2021-07-06 22:00:42,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42" (1/1) ... [2021-07-06 22:00:42,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 22:00:42,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 22:00:42,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 22:00:42,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 22:00:42,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42" (1/1) ... [2021-07-06 22:00:42,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42" (1/1) ... [2021-07-06 22:00:42,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42" (1/1) ... [2021-07-06 22:00:42,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42" (1/1) ... [2021-07-06 22:00:42,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42" (1/1) ... [2021-07-06 22:00:42,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42" (1/1) ... [2021-07-06 22:00:42,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42" (1/1) ... [2021-07-06 22:00:42,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 22:00:42,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 22:00:42,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 22:00:42,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 22:00:42,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42" (1/1) ... [2021-07-06 22:00:42,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 22:00:42,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 22:00:42,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 22:00:42,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 22:00:42,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 22:00:42,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 22:00:42,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 22:00:42,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-06 22:00:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2021-07-06 22:00:42,554 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2021-07-06 22:00:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2021-07-06 22:00:42,554 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2021-07-06 22:00:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 22:00:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 22:00:42,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 22:00:42,556 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-06 22:00:43,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 22:00:43,028 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-07-06 22:00:43,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 10:00:43 BoogieIcfgContainer [2021-07-06 22:00:43,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 22:00:43,031 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 22:00:43,031 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 22:00:43,038 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 22:00:43,038 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 22:00:43,039 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 10:00:41" (1/3) ... [2021-07-06 22:00:43,040 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5aa122d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 10:00:43, skipping insertion in model container [2021-07-06 22:00:43,040 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 22:00:43,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 10:00:42" (2/3) ... [2021-07-06 22:00:43,040 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5aa122d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 10:00:43, skipping insertion in model container [2021-07-06 22:00:43,040 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 22:00:43,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 10:00:43" (3/3) ... [2021-07-06 22:00:43,042 INFO L389 chiAutomizerObserver]: Analyzing ICFG gcd-2.i [2021-07-06 22:00:43,086 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 22:00:43,086 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 22:00:43,086 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 22:00:43,086 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 22:00:43,087 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 22:00:43,087 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 22:00:43,087 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 22:00:43,087 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 22:00:43,100 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.UnsupportedOperationException: analysis for sequential programs does not support fork/join at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CFG2NestedWordAutomaton.constructAutomaton(CFG2NestedWordAutomaton.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CFG2NestedWordAutomaton.constructAutomatonWithSPredicates(CFG2NestedWordAutomaton.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.getInitialAbstraction(BuchiCegarLoop.java:867) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-07-06 22:00:43,105 INFO L168 Benchmark]: Toolchain (without parser) took 1216.55 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 30.5 MB in the beginning and 40.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-07-06 22:00:43,106 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 22:00:43,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 504.58 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 30.3 MB in the beginning and 48.1 MB in the end (delta: -17.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-07-06 22:00:43,108 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.47 ms. Allocated memory is still 69.2 MB. Free memory was 48.1 MB in the beginning and 45.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 22:00:43,108 INFO L168 Benchmark]: Boogie Preprocessor took 26.28 ms. Allocated memory is still 69.2 MB. Free memory was 45.9 MB in the beginning and 44.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 22:00:43,109 INFO L168 Benchmark]: RCFGBuilder took 542.06 ms. Allocated memory is still 69.2 MB. Free memory was 44.1 MB in the beginning and 45.0 MB in the end (delta: -856.2 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-07-06 22:00:43,110 INFO L168 Benchmark]: BuchiAutomizer took 71.24 ms. Allocated memory is still 69.2 MB. Free memory was 44.6 MB in the beginning and 40.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 22:00:43,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 504.58 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 30.3 MB in the beginning and 48.1 MB in the end (delta: -17.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.47 ms. Allocated memory is still 69.2 MB. Free memory was 48.1 MB in the beginning and 45.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.28 ms. Allocated memory is still 69.2 MB. Free memory was 45.9 MB in the beginning and 44.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 542.06 ms. Allocated memory is still 69.2 MB. Free memory was 44.1 MB in the beginning and 45.0 MB in the end (delta: -856.2 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 71.24 ms. Allocated memory is still 69.2 MB. Free memory was 44.6 MB in the beginning and 40.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: UnsupportedOperationException: analysis for sequential programs does not support fork/join de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: UnsupportedOperationException: analysis for sequential programs does not support fork/join: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CFG2NestedWordAutomaton.constructAutomaton(CFG2NestedWordAutomaton.java:238) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-07-06 22:00:43,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...