./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/pthread-atomic/gcd-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ --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 abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:40:53,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:40:53,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:40:53,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:40:53,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:40:53,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:40:53,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:40:53,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:40:53,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:40:53,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:40:53,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:40:53,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:40:53,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:40:53,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:40:53,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:40:53,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:40:53,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:40:53,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:40:53,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:40:53,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:40:53,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:40:53,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:40:53,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:40:53,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:40:53,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:40:53,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:40:53,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:40:53,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:40:53,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:40:53,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:40:53,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:40:53,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:40:53,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:40:53,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:40:53,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:40:53,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:40:53,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:40:53,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:40:53,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:40:53,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:40:53,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:40:53,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-10-17 10:40:53,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:40:53,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:40:53,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:40:53,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:40:53,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:40:53,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:40:53,859 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:40:53,860 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:40:53,860 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:40:53,860 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:40:53,862 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:40:53,862 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:40:53,862 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:40:53,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:40:53,863 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:40:53,863 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:40:53,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:40:53,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:40:53,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:40:53,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:40:53,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:40:53,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:40:53,865 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:40:53,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:40:53,868 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:40:53,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:40:53,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:40:53,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:40:53,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:40:53,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:40:53,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:40:53,872 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:40:53,872 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 [2022-10-17 10:40:54,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:40:54,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:40:54,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:40:54,237 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:40:54,238 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:40:54,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-atomic/gcd-2.i [2022-10-17 10:40:54,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/data/c85e14e76/6dadccb85f584582973edd8bdb77d95e/FLAG4676260c3 [2022-10-17 10:40:54,974 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:40:54,978 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/sv-benchmarks/c/pthread-atomic/gcd-2.i [2022-10-17 10:40:55,003 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/data/c85e14e76/6dadccb85f584582973edd8bdb77d95e/FLAG4676260c3 [2022-10-17 10:40:55,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/data/c85e14e76/6dadccb85f584582973edd8bdb77d95e [2022-10-17 10:40:55,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:40:55,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:40:55,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:40:55,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:40:55,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:40:55,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd96bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55, skipping insertion in model container [2022-10-17 10:40:55,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:40:55,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:40:55,510 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/sv-benchmarks/c/pthread-atomic/gcd-2.i[938,951] [2022-10-17 10:40:55,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:40:55,717 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:40:55,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/sv-benchmarks/c/pthread-atomic/gcd-2.i[938,951] [2022-10-17 10:40:55,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:40:55,825 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:40:55,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55 WrapperNode [2022-10-17 10:40:55,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:40:55,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:40:55,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:40:55,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:40:55,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,894 INFO L138 Inliner]: procedures = 174, calls = 30, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 122 [2022-10-17 10:40:55,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:40:55,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:40:55,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:40:55,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:40:55,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,930 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:40:55,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:40:55,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:40:55,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:40:55,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (1/1) ... [2022-10-17 10:40:55,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:40:55,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:40:55,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:40:56,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:40:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:40:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:40:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:40:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:40:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:40:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2022-10-17 10:40:56,061 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2022-10-17 10:40:56,061 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2022-10-17 10:40:56,063 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2022-10-17 10:40:56,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:40:56,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:40:56,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:40:56,066 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:40:56,234 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:40:56,236 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:40:56,670 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:40:56,719 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:40:56,719 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:40:56,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:40:56 BoogieIcfgContainer [2022-10-17 10:40:56,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:40:56,724 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:40:56,724 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:40:56,730 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:40:56,731 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:40:56,731 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:40:55" (1/3) ... [2022-10-17 10:40:56,733 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@713278bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:40:56, skipping insertion in model container [2022-10-17 10:40:56,733 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:40:56,733 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:40:55" (2/3) ... [2022-10-17 10:40:56,734 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@713278bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:40:56, skipping insertion in model container [2022-10-17 10:40:56,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:40:56,734 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:40:56" (3/3) ... [2022-10-17 10:40:56,736 INFO L332 chiAutomizerObserver]: Analyzing ICFG gcd-2.i [2022-10-17 10:40:56,850 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-17 10:40:56,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 152 transitions, 320 flow [2022-10-17 10:40:56,988 INFO L130 PetriNetUnfolder]: 12/148 cut-off events. [2022-10-17 10:40:56,989 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:40:56,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 12/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2022-10-17 10:40:56,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 152 transitions, 320 flow [2022-10-17 10:40:57,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 148 transitions, 308 flow [2022-10-17 10:40:57,010 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-10-17 10:40:57,029 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 148 transitions, 308 flow [2022-10-17 10:40:57,033 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 148 transitions, 308 flow [2022-10-17 10:40:57,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 148 transitions, 308 flow [2022-10-17 10:40:57,077 INFO L130 PetriNetUnfolder]: 12/148 cut-off events. [2022-10-17 10:40:57,077 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:40:57,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 12/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2022-10-17 10:40:57,080 INFO L118 LiptonReduction]: Number of co-enabled transitions 308 [2022-10-17 10:41:08,116 INFO L133 LiptonReduction]: Checked pairs total: 705 [2022-10-17 10:41:08,116 INFO L135 LiptonReduction]: Total number of compositions: 172 [2022-10-17 10:41:08,143 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:41:08,143 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:41:08,143 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:41:08,144 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:41:08,144 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:41:08,144 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:41:08,144 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:41:08,145 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:41:08,147 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-10-17 10:41:08,192 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 32 [2022-10-17 10:41:08,193 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:41:08,193 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:41:08,200 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-10-17 10:41:08,200 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:41:08,201 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:41:08,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 51 states, but on-demand construction may add more states [2022-10-17 10:41:08,207 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 32 [2022-10-17 10:41:08,208 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:41:08,208 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:41:08,208 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-10-17 10:41:08,209 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:41:08,215 INFO L748 eck$LassoCheckResult]: Stem: 148#[ULTIMATE.startENTRY]don't care [571] ULTIMATE.startENTRY-->L729-2: Formula: (let ((.cse1 (select |v_#memory_int_In_1| 1)) (.cse0 (store |v_#valid_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2| 1))) (and (= |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_14| |v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_18|) (= v_~a~0_Out_6 |v_ULTIMATE.start_start_~a_in#1_Out_2|) (= (select |v_#valid_In_1| 1) 1) (= |v_ULTIMATE.start_start_#in~a_in#1_Out_2| |v_ULTIMATE.start_start_~a_in#1_Out_2|) (= |v_ULTIMATE.start_start_#in~b_in#1_Out_2| |v_ULTIMATE.start_start_~b_in#1_Out_2|) (not (= (ite (< 0 (mod |v_ULTIMATE.start_main_~a_in~0#1_Out_2| 4294967296)) 1 0) 0)) (= (select |v_#valid_In_1| 0) 0) (= 0 |v_#NULL.base_Out_2|) (= (store .cse0 |v_ULTIMATE.start_start_~#t2~0#1.base_Out_2| 1) |v_#valid_Out_2|) (= |v_#length_Out_2| (store (store |v_#length_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2| 4) |v_ULTIMATE.start_start_~#t2~0#1.base_Out_2| 4)) (= |v_#pthreadsForks_Out_2| (+ |v_#pthreadsForks_In_1| 1)) (= (select |v_#valid_In_1| 2) 1) (= (select .cse1 1) 0) (= 48 (select .cse1 0)) (= (select |v_#length_In_1| 2) 8) (= |v_#NULL.offset_Out_2| 0) (= (select |v_#valid_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2|) 0) (= |v_#pthreadsForks_In_1| |v_ULTIMATE.start_start_#t~pre3#1_Out_2|) (= |v_ULTIMATE.start_main_~b_in~0#1_Out_6| |v_ULTIMATE.start_start_#in~b_in#1_Out_2|) (= |v_ULTIMATE.start_main_~a_in~0#1_Out_2| |v_ULTIMATE.start_start_#in~a_in#1_Out_2|) (= 0 (select .cse0 |v_ULTIMATE.start_start_~#t2~0#1.base_Out_2|)) (= |v_ULTIMATE.start_start_~b_in#1_Out_2| v_~b~0_Out_6) (< |v_#StackHeapBarrier_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2|) (= (select |v_#length_In_1| 1) 2) (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_18| 0)) (< 0 |v_#StackHeapBarrier_In_1|) (= |v_ULTIMATE.start_start_~#t2~0#1.offset_Out_2| 0) (= (store |v_#memory_int_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2| (store (select |v_#memory_int_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2|) |v_ULTIMATE.start_start_~#t1~0#1.offset_Out_2| |v_ULTIMATE.start_start_#t~pre3#1_Out_2|)) |v_#memory_int_Out_2|) (= |v_ULTIMATE.start_start_~#t1~0#1.offset_Out_2| 0) (< |v_#StackHeapBarrier_In_1| |v_ULTIMATE.start_start_~#t2~0#1.base_Out_2|) (= |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_14| (ite (< 0 (mod |v_ULTIMATE.start_main_~b_in~0#1_Out_6| 4294967296)) 1 0)))) InVars {#memory_int=|v_#memory_int_In_1|, #StackHeapBarrier=|v_#StackHeapBarrier_In_1|, #length=|v_#length_In_1|, #pthreadsForks=|v_#pthreadsForks_In_1|, #valid=|v_#valid_In_1|} OutVars{ULTIMATE.start_start_~#t1~0#1.base=|v_ULTIMATE.start_start_~#t1~0#1.base_Out_2|, ULTIMATE.start_start_#t~pre3#1=|v_ULTIMATE.start_start_#t~pre3#1_Out_2|, #NULL.offset=|v_#NULL.offset_Out_2|, ULTIMATE.start_start_~#t2~0#1.offset=|v_ULTIMATE.start_start_~#t2~0#1.offset_Out_2|, ~a~0=v_~a~0_Out_6, ULTIMATE.start_start_~#t1~0#1.offset=|v_ULTIMATE.start_start_~#t1~0#1.offset_Out_2|, #pthreadsForks=|v_#pthreadsForks_Out_2|, ULTIMATE.start_start_~#t2~0#1.base=|v_ULTIMATE.start_start_~#t2~0#1.base_Out_2|, ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_18|, ULTIMATE.start_start_#res#1=|v_ULTIMATE.start_start_#res#1_Out_2|, #length=|v_#length_Out_2|, ULTIMATE.start_start_#t~nondet6#1=|v_ULTIMATE.start_start_#t~nondet6#1_Out_2|, ULTIMATE.start_start_#t~mem8#1=|v_ULTIMATE.start_start_#t~mem8#1_Out_2|, ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_Out_2|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_Out_2|, ULTIMATE.start_start_#in~b_in#1=|v_ULTIMATE.start_start_#in~b_in#1_Out_2|, ULTIMATE.start_main_~b_in~0#1=|v_ULTIMATE.start_main_~b_in~0#1_Out_6|, ULTIMATE.start_start_#in~a_in#1=|v_ULTIMATE.start_start_#in~a_in#1_Out_2|, ULTIMATE.start_start_~a_in#1=|v_ULTIMATE.start_start_~a_in#1_Out_2|, ULTIMATE.start_start_~b_in#1=|v_ULTIMATE.start_start_~b_in#1_Out_2|, #NULL.base=|v_#NULL.base_Out_2|, ULTIMATE.start_start_#t~pre5#1=|v_ULTIMATE.start_start_#t~pre5#1_Out_2|, ULTIMATE.start_start_#t~mem7#1=|v_ULTIMATE.start_start_#t~mem7#1_Out_2|, #StackHeapBarrier=|v_#StackHeapBarrier_In_1|, ULTIMATE.start_main_#t~nondet11#1=|v_ULTIMATE.start_main_#t~nondet11#1_Out_6|, ~b~0=v_~b~0_Out_6, #valid=|v_#valid_Out_2|, #memory_int=|v_#memory_int_Out_2|, ULTIMATE.start_main_#t~ret12#1=|v_ULTIMATE.start_main_#t~ret12#1_Out_2|, ULTIMATE.start_main_~a_in~0#1=|v_ULTIMATE.start_main_~a_in~0#1_Out_2|, ULTIMATE.start_start_#t~nondet4#1=|v_ULTIMATE.start_start_#t~nondet4#1_Out_2|, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_14|} AuxVars[] AssignedVars[ULTIMATE.start_start_~#t1~0#1.base, ULTIMATE.start_start_#t~pre3#1, #NULL.offset, ULTIMATE.start_start_~#t2~0#1.offset, ~a~0, ULTIMATE.start_start_~#t1~0#1.offset, #pthreadsForks, ULTIMATE.start_start_~#t2~0#1.base, ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_start_#res#1, #length, ULTIMATE.start_start_#t~nondet6#1, ULTIMATE.start_start_#t~mem8#1, ULTIMATE.start_main_#t~nondet10#1, ULTIMATE.start_main_#res#1, ULTIMATE.start_start_#in~b_in#1, ULTIMATE.start_main_~b_in~0#1, ULTIMATE.start_start_#in~a_in#1, ULTIMATE.start_start_~a_in#1, ULTIMATE.start_start_~b_in#1, #NULL.base, ULTIMATE.start_start_#t~pre5#1, ULTIMATE.start_start_#t~mem7#1, ULTIMATE.start_main_#t~nondet11#1, ~b~0, #valid, #memory_int, ULTIMATE.start_main_#t~ret12#1, ULTIMATE.start_main_~a_in~0#1, ULTIMATE.start_start_#t~nondet4#1, ULTIMATE.start_assume_abort_if_not_#in~cond#1] 151#[L729-2]don't care [396] L729-2-->dec_aENTRY: Formula: (and (= |v_dec_aThread1of1ForFork0_#in~arg#1.base_4| 0) (= |v_dec_aThread1of1ForFork0_#in~arg#1.offset_4| 0) (= v_dec_aThread1of1ForFork0_thidvar1_2 0) (= |v_ULTIMATE.start_start_#t~pre3#1_6| v_dec_aThread1of1ForFork0_thidvar0_2)) InVars {ULTIMATE.start_start_#t~pre3#1=|v_ULTIMATE.start_start_#t~pre3#1_6|} OutVars{dec_aThread1of1ForFork0_~arg#1.offset=|v_dec_aThread1of1ForFork0_~arg#1.offset_4|, dec_aThread1of1ForFork0_thidvar0=v_dec_aThread1of1ForFork0_thidvar0_2, dec_aThread1of1ForFork0_#in~arg#1.base=|v_dec_aThread1of1ForFork0_#in~arg#1.base_4|, dec_aThread1of1ForFork0_thidvar1=v_dec_aThread1of1ForFork0_thidvar1_2, dec_aThread1of1ForFork0_#res#1.offset=|v_dec_aThread1of1ForFork0_#res#1.offset_4|, dec_aThread1of1ForFork0_#in~arg#1.offset=|v_dec_aThread1of1ForFork0_#in~arg#1.offset_4|, dec_aThread1of1ForFork0_#res#1.base=|v_dec_aThread1of1ForFork0_#res#1.base_4|, ULTIMATE.start_start_#t~pre3#1=|v_ULTIMATE.start_start_#t~pre3#1_6|, dec_aThread1of1ForFork0_~arg#1.base=|v_dec_aThread1of1ForFork0_~arg#1.base_4|} AuxVars[] AssignedVars[dec_aThread1of1ForFork0_~arg#1.offset, dec_aThread1of1ForFork0_thidvar0, dec_aThread1of1ForFork0_#in~arg#1.base, dec_aThread1of1ForFork0_thidvar1, dec_aThread1of1ForFork0_#res#1.offset, dec_aThread1of1ForFork0_#in~arg#1.offset, dec_aThread1of1ForFork0_#res#1.base, dec_aThread1of1ForFork0_~arg#1.base] 153#[L729-3, dec_aENTRY]don't care [380] dec_aENTRY-->L711-1: Formula: (and (= |v_dec_aThread1of1ForFork0_#in~arg#1.offset_1| |v_dec_aThread1of1ForFork0_~arg#1.offset_1|) (= |v_dec_aThread1of1ForFork0_#in~arg#1.base_1| |v_dec_aThread1of1ForFork0_~arg#1.base_1|)) InVars {dec_aThread1of1ForFork0_#in~arg#1.base=|v_dec_aThread1of1ForFork0_#in~arg#1.base_1|, dec_aThread1of1ForFork0_#in~arg#1.offset=|v_dec_aThread1of1ForFork0_#in~arg#1.offset_1|} OutVars{dec_aThread1of1ForFork0_~arg#1.offset=|v_dec_aThread1of1ForFork0_~arg#1.offset_1|, dec_aThread1of1ForFork0_~arg#1.base=|v_dec_aThread1of1ForFork0_~arg#1.base_1|, dec_aThread1of1ForFork0_#in~arg#1.base=|v_dec_aThread1of1ForFork0_#in~arg#1.base_1|, dec_aThread1of1ForFork0_#in~arg#1.offset=|v_dec_aThread1of1ForFork0_#in~arg#1.offset_1|} AuxVars[] AssignedVars[dec_aThread1of1ForFork0_~arg#1.offset, dec_aThread1of1ForFork0_~arg#1.base] 157#[L711-1, L729-3]don't care [2022-10-17 10:41:08,216 INFO L750 eck$LassoCheckResult]: Loop: 157#[L711-1, L729-3]don't care [383] L711-1-->L711: Formula: (not (= (mod v_~a~0_3 4294967296) (mod v_~b~0_3 4294967296))) InVars {~a~0=v_~a~0_3, ~b~0=v_~b~0_3} OutVars{~a~0=v_~a~0_3, ~b~0=v_~b~0_3} AuxVars[] AssignedVars[] 165#[L729-3, L711]don't care [385] L711-->L711-1: Formula: (let ((.cse0 (< (mod v_~b~0_30 4294967296) (mod v_~a~0_30 4294967296)))) (or (and (= (+ v_~a~0_29 v_~b~0_30) v_~a~0_30) .cse0) (and (not .cse0) (= v_~a~0_29 v_~a~0_30)))) InVars {~a~0=v_~a~0_30, ~b~0=v_~b~0_30} OutVars{~a~0=v_~a~0_29, ~b~0=v_~b~0_30} AuxVars[] AssignedVars[~a~0] 157#[L711-1, L729-3]don't care [2022-10-17 10:41:08,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:41:08,223 INFO L85 PathProgramCache]: Analyzing trace with hash 591178, now seen corresponding path program 1 times [2022-10-17 10:41:08,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:41:08,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494624630] [2022-10-17 10:41:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:41:08,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:41:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:41:08,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:41:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:41:08,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:41:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:41:08,484 INFO L85 PathProgramCache]: Analyzing trace with hash 13219, now seen corresponding path program 1 times [2022-10-17 10:41:08,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:41:08,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345273984] [2022-10-17 10:41:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:41:08,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:41:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:41:08,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:41:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:41:08,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:41:08,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:41:08,563 INFO L85 PathProgramCache]: Analyzing trace with hash 568134316, now seen corresponding path program 1 times [2022-10-17 10:41:08,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:41:08,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898775200] [2022-10-17 10:41:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:41:08,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:41:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:41:08,639 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:41:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:41:08,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:41:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:41:09,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:41:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:41:09,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.10 10:41:09 BoogieIcfgContainer [2022-10-17 10:41:09,998 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-10-17 10:41:09,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:41:09,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:41:09,998 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:41:10,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:40:56" (3/4) ... [2022-10-17 10:41:10,004 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-10-17 10:41:10,091 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:41:10,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:41:10,097 INFO L158 Benchmark]: Toolchain (without parser) took 14911.34ms. Allocated memory was 90.2MB in the beginning and 153.1MB in the end (delta: 62.9MB). Free memory was 64.0MB in the beginning and 124.5MB in the end (delta: -60.6MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2022-10-17 10:41:10,099 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 63.1MB in the beginning and 63.0MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:41:10,100 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.95ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 56.2MB in the end (delta: 7.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-10-17 10:41:10,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.26ms. Allocated memory is still 90.2MB. Free memory was 56.2MB in the beginning and 53.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:41:10,103 INFO L158 Benchmark]: Boogie Preprocessor took 41.71ms. Allocated memory is still 90.2MB. Free memory was 53.7MB in the beginning and 52.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:41:10,105 INFO L158 Benchmark]: RCFGBuilder took 785.39ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 52.0MB in the beginning and 89.8MB in the end (delta: -37.8MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-10-17 10:41:10,105 INFO L158 Benchmark]: BuchiAutomizer took 13273.53ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 89.8MB in the beginning and 126.6MB in the end (delta: -36.8MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. [2022-10-17 10:41:10,109 INFO L158 Benchmark]: Witness Printer took 97.91ms. Allocated memory is still 153.1MB. Free memory was 126.6MB in the beginning and 124.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:41:10,112 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 63.1MB in the beginning and 63.0MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.95ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 56.2MB in the end (delta: 7.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.26ms. Allocated memory is still 90.2MB. Free memory was 56.2MB in the beginning and 53.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.71ms. Allocated memory is still 90.2MB. Free memory was 53.7MB in the beginning and 52.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 785.39ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 52.0MB in the beginning and 89.8MB in the end (delta: -37.8MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 13273.53ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 89.8MB in the beginning and 126.6MB in the end (delta: -36.8MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. * Witness Printer took 97.91ms. Allocated memory is still 153.1MB. Free memory was 126.6MB in the beginning and 124.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.0s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 11.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 709]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L695] 0 unsigned a, b; [L747] 0 unsigned a_in=__VERIFIER_nondet_uint(); [L748] 0 unsigned b_in=__VERIFIER_nondet_uint(); [L749] CALL 0 assume_abort_if_not(a_in>0) [L15] COND FALSE 0 !(!cond) [L749] RET 0 assume_abort_if_not(a_in>0) [L750] CALL 0 assume_abort_if_not(b_in>0) [L15] COND FALSE 0 !(!cond) [L750] RET 0 assume_abort_if_not(b_in>0) [L751] CALL 0 start(a_in, b_in) [L726] 0 a=a_in [L727] 0 b=b_in [L728] 0 pthread_t t1, t2; [L729] FCALL, FORK 0 pthread_create(&t1, 0, dec_a, 0) VAL [\old(a_in)=1, \old(b_in)=2, a=1, a_in=1, b=2, b_in=2, pthread_create(&t1, 0, dec_a, 0)=-1, t1={4:0}, t2={3:0}] Loop: [L709] COND TRUE a!=b [L711] CALL __VERIFIER_atomic_dec_a() [L698] COND TRUE a>b [L699] a=a-b [L711] RET __VERIFIER_atomic_dec_a() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 709]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L695] 0 unsigned a, b; [L747] 0 unsigned a_in=__VERIFIER_nondet_uint(); [L748] 0 unsigned b_in=__VERIFIER_nondet_uint(); [L749] CALL 0 assume_abort_if_not(a_in>0) [L15] COND FALSE 0 !(!cond) [L749] RET 0 assume_abort_if_not(a_in>0) [L750] CALL 0 assume_abort_if_not(b_in>0) [L15] COND FALSE 0 !(!cond) [L750] RET 0 assume_abort_if_not(b_in>0) [L751] CALL 0 start(a_in, b_in) [L726] 0 a=a_in [L727] 0 b=b_in [L728] 0 pthread_t t1, t2; [L729] FCALL, FORK 0 pthread_create(&t1, 0, dec_a, 0) VAL [\old(a_in)=1, \old(b_in)=2, a=1, a_in=1, b=2, b_in=2, pthread_create(&t1, 0, dec_a, 0)=-1, t1={4:0}, t2={3:0}] Loop: [L709] COND TRUE a!=b [L711] CALL __VERIFIER_atomic_dec_a() [L698] COND TRUE a>b [L699] a=a-b [L711] RET __VERIFIER_atomic_dec_a() End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.1s, 143 PlacesBefore, 22 PlacesAfterwards, 148 TransitionsBefore, 17 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 8 FixpointIterations, 117 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 32 TrivialYvCompositions, 4 ConcurrentYvCompositions, 10 ChoiceCompositions, 172 TotalNumberOfCompositions, 705 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 501, positive: 465, positive conditional: 0, positive unconditional: 465, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 201, positive: 198, positive conditional: 0, positive unconditional: 198, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 201, positive: 195, positive conditional: 0, positive unconditional: 195, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 78, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 501, positive: 267, positive conditional: 0, positive unconditional: 267, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 201, unknown conditional: 0, unknown unconditional: 201] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 RESULT: Ultimate proved your program to be incorrect! [2022-10-17 10:41:10,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc823aaf-9ea7-4ab6-899d-ae5b38cee999/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)