./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 54858612 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 0.2.0-5485861 [2020-10-26 06:04:43,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 06:04:43,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 06:04:43,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 06:04:43,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 06:04:43,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 06:04:43,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 06:04:43,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 06:04:43,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 06:04:43,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 06:04:43,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 06:04:43,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 06:04:43,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 06:04:43,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 06:04:43,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 06:04:43,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 06:04:43,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 06:04:43,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 06:04:43,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 06:04:43,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 06:04:43,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 06:04:43,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 06:04:43,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 06:04:43,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 06:04:43,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 06:04:43,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 06:04:43,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 06:04:43,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 06:04:43,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 06:04:43,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 06:04:43,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 06:04:43,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 06:04:43,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 06:04:43,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 06:04:43,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 06:04:43,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 06:04:43,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 06:04:43,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 06:04:43,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 06:04:43,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 06:04:43,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 06:04:43,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 06:04:43,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 06:04:43,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 06:04:43,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 06:04:43,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 06:04:43,245 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 06:04:43,245 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 06:04:43,245 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 06:04:43,246 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 06:04:43,246 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 06:04:43,246 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 06:04:43,248 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 06:04:43,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 06:04:43,248 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 06:04:43,249 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 06:04:43,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 06:04:43,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 06:04:43,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 06:04:43,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 06:04:43,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 06:04:43,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 06:04:43,250 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 06:04:43,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 06:04:43,251 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 06:04:43,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 06:04:43,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 06:04:43,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 06:04:43,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 06:04:43,252 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 06:04:43,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 06:04:43,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 06:04:43,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 06:04:43,253 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 06:04:43,255 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 06:04:43,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcc2c6a6cd7cbcbc8283eb33ec126985d628a9eb [2020-10-26 06:04:43,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 06:04:43,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 06:04:43,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 06:04:43,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 06:04:43,744 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 06:04:43,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/gcd-2.i [2020-10-26 06:04:43,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23239b9ea/c465deef4a734a078900d68a19824edc/FLAGb8dfd0346 [2020-10-26 06:04:44,688 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 06:04:44,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/gcd-2.i [2020-10-26 06:04:44,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23239b9ea/c465deef4a734a078900d68a19824edc/FLAGb8dfd0346 [2020-10-26 06:04:44,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23239b9ea/c465deef4a734a078900d68a19824edc [2020-10-26 06:04:44,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 06:04:44,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 06:04:44,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 06:04:44,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 06:04:44,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 06:04:44,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 06:04:44" (1/1) ... [2020-10-26 06:04:44,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231e60c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:44, skipping insertion in model container [2020-10-26 06:04:44,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 06:04:44" (1/1) ... [2020-10-26 06:04:44,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 06:04:44,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 06:04:45,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 06:04:45,351 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 06:04:45,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 06:04:45,531 INFO L208 MainTranslator]: Completed translation [2020-10-26 06:04:45,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45 WrapperNode [2020-10-26 06:04:45,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 06:04:45,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 06:04:45,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 06:04:45,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 06:04:45,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45" (1/1) ... [2020-10-26 06:04:45,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45" (1/1) ... [2020-10-26 06:04:45,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 06:04:45,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 06:04:45,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 06:04:45,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 06:04:45,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45" (1/1) ... [2020-10-26 06:04:45,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45" (1/1) ... [2020-10-26 06:04:45,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45" (1/1) ... [2020-10-26 06:04:45,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45" (1/1) ... [2020-10-26 06:04:45,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45" (1/1) ... [2020-10-26 06:04:45,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45" (1/1) ... [2020-10-26 06:04:45,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45" (1/1) ... [2020-10-26 06:04:45,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 06:04:45,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 06:04:45,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 06:04:45,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 06:04:45,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:04:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 06:04:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 06:04:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 06:04:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 06:04:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2020-10-26 06:04:45,826 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2020-10-26 06:04:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2020-10-26 06:04:45,827 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2020-10-26 06:04:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 06:04:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 06:04:45,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 06:04:45,832 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 06:04:46,734 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 06:04:46,735 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-10-26 06:04:46,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 06:04:46 BoogieIcfgContainer [2020-10-26 06:04:46,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 06:04:46,741 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 06:04:46,741 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 06:04:46,745 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 06:04:46,746 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 06:04:46,746 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 06:04:44" (1/3) ... [2020-10-26 06:04:46,748 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4734012b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 06:04:46, skipping insertion in model container [2020-10-26 06:04:46,748 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 06:04:46,748 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:04:45" (2/3) ... [2020-10-26 06:04:46,749 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4734012b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 06:04:46, skipping insertion in model container [2020-10-26 06:04:46,749 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 06:04:46,749 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 06:04:46" (3/3) ... [2020-10-26 06:04:46,751 INFO L373 chiAutomizerObserver]: Analyzing ICFG gcd-2.i [2020-10-26 06:04:46,825 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 06:04:46,825 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 06:04:46,825 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 06:04:46,826 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 06:04:46,826 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 06:04:46,826 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 06:04:46,826 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 06:04:46,826 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 06:04:46,842 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:877) 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:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:382) 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) [2020-10-26 06:04:46,847 INFO L168 Benchmark]: Toolchain (without parser) took 1944.81 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.9 MB in the beginning and 21.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2020-10-26 06:04:46,848 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 46.1 MB. Free memory was 28.6 MB in the beginning and 28.6 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 06:04:46,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.55 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.2 MB in the beginning and 21.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-10-26 06:04:46,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.17 ms. Allocated memory is still 56.6 MB. Free memory was 21.2 MB in the beginning and 39.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-10-26 06:04:46,851 INFO L168 Benchmark]: Boogie Preprocessor took 59.79 ms. Allocated memory is still 56.6 MB. Free memory was 39.7 MB in the beginning and 37.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 06:04:46,852 INFO L168 Benchmark]: RCFGBuilder took 1017.86 ms. Allocated memory is still 56.6 MB. Free memory was 37.9 MB in the beginning and 25.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-10-26 06:04:46,853 INFO L168 Benchmark]: BuchiAutomizer took 103.40 ms. Allocated memory is still 56.6 MB. Free memory was 25.7 MB in the beginning and 21.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 06:04:46,858 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 46.1 MB. Free memory was 28.6 MB in the beginning and 28.6 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 626.55 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.2 MB in the beginning and 21.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 124.17 ms. Allocated memory is still 56.6 MB. Free memory was 21.2 MB in the beginning and 39.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.79 ms. Allocated memory is still 56.6 MB. Free memory was 39.7 MB in the beginning and 37.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1017.86 ms. Allocated memory is still 56.6 MB. Free memory was 37.9 MB in the beginning and 25.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 103.40 ms. Allocated memory is still 56.6 MB. Free memory was 25.7 MB in the beginning and 21.2 MB in the end (delta: 4.6 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. Received shutdown request...