./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-nla/dijkstra1-both-nt.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/dijkstra1-both-nt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8 --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 07a5e6dd5643b3fa45a0834b073ae31072ea61ed37e28ad858159ff6ad70dce7 --- 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-e04fb08 [2022-11-16 11:20:11,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:20:11,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:20:11,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:20:11,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:20:11,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:20:11,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:20:11,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:20:11,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:20:11,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:20:11,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:20:11,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:20:11,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:20:11,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:20:11,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:20:11,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:20:11,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:20:11,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:20:11,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:20:11,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:20:11,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:20:11,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:20:11,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:20:11,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:20:11,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:20:11,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:20:11,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:20:11,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:20:11,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:20:11,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:20:11,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:20:11,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:20:11,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:20:11,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:20:11,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:20:11,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:20:11,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:20:11,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:20:11,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:20:11,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:20:11,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:20:11,525 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-16 11:20:11,563 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:20:11,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:20:11,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:20:11,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:20:11,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:20:11,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:20:11,570 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:20:11,570 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 11:20:11,571 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 11:20:11,571 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 11:20:11,571 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 11:20:11,571 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 11:20:11,572 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 11:20:11,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:20:11,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:20:11,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:20:11,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:20:11,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:20:11,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:20:11,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 11:20:11,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 11:20:11,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 11:20:11,574 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:20:11,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:20:11,574 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 11:20:11,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:20:11,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 11:20:11,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:20:11,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:20:11,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:20:11,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:20:11,577 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 11:20:11,577 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_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07a5e6dd5643b3fa45a0834b073ae31072ea61ed37e28ad858159ff6ad70dce7 [2022-11-16 11:20:11,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:20:11,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:20:11,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:20:11,901 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:20:11,902 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:20:11,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/termination-nla/dijkstra1-both-nt.c [2022-11-16 11:20:11,988 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/data/e6961a7dc/961e8e8b3fd4441c83df89e8f1e6b4d0/FLAGcaed5cb1f [2022-11-16 11:20:12,567 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:20:12,568 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/sv-benchmarks/c/termination-nla/dijkstra1-both-nt.c [2022-11-16 11:20:12,578 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/data/e6961a7dc/961e8e8b3fd4441c83df89e8f1e6b4d0/FLAGcaed5cb1f [2022-11-16 11:20:12,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/data/e6961a7dc/961e8e8b3fd4441c83df89e8f1e6b4d0 [2022-11-16 11:20:12,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:20:12,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:20:12,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:20:12,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:20:12,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:20:12,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:20:12" (1/1) ... [2022-11-16 11:20:12,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5192c4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:12, skipping insertion in model container [2022-11-16 11:20:12,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:20:12" (1/1) ... [2022-11-16 11:20:12,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:20:12,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:20:13,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:20:13,183 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:20:13,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:20:13,222 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:20:13,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13 WrapperNode [2022-11-16 11:20:13,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:20:13,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:20:13,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:20:13,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:20:13,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (1/1) ... [2022-11-16 11:20:13,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (1/1) ... [2022-11-16 11:20:13,264 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-16 11:20:13,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:20:13,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:20:13,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:20:13,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:20:13,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (1/1) ... [2022-11-16 11:20:13,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (1/1) ... [2022-11-16 11:20:13,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (1/1) ... [2022-11-16 11:20:13,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (1/1) ... [2022-11-16 11:20:13,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (1/1) ... [2022-11-16 11:20:13,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (1/1) ... [2022-11-16 11:20:13,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (1/1) ... [2022-11-16 11:20:13,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (1/1) ... [2022-11-16 11:20:13,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:20:13,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:20:13,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:20:13,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:20:13,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (1/1) ... [2022-11-16 11:20:13,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:20:13,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:13,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:20:13,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 11:20:13,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:20:13,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:20:13,463 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:20:13,465 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:20:13,654 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:20:13,662 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:20:13,665 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:20:13,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:20:13 BoogieIcfgContainer [2022-11-16 11:20:13,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:20:13,670 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 11:20:13,672 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 11:20:13,677 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 11:20:13,677 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:20:13,678 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 11:20:12" (1/3) ... [2022-11-16 11:20:13,679 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24184750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:20:13, skipping insertion in model container [2022-11-16 11:20:13,680 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:20:13,680 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:20:13" (2/3) ... [2022-11-16 11:20:13,680 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24184750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:20:13, skipping insertion in model container [2022-11-16 11:20:13,680 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:20:13,681 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:20:13" (3/3) ... [2022-11-16 11:20:13,682 INFO L332 chiAutomizerObserver]: Analyzing ICFG dijkstra1-both-nt.c [2022-11-16 11:20:13,777 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 11:20:13,777 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 11:20:13,777 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 11:20:13,777 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 11:20:13,778 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 11:20:13,778 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 11:20:13,778 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 11:20:13,779 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 11:20:13,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:13,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 11:20:13,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:20:13,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:20:13,829 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 11:20:13,829 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-16 11:20:13,829 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 11:20:13,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:13,831 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 11:20:13,832 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:20:13,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:20:13,832 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 11:20:13,833 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-16 11:20:13,842 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~n~0#1, main_~p~0#1, main_~q~0#1, main_~r~0#1, main_~h~0#1;havoc main_~n~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_~r~0#1;havoc main_~h~0#1;main_~n~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := 0;main_~q~0#1 := 1;main_~r~0#1 := main_~n~0#1;main_~h~0#1 := 0; 7#L40true assume main_~q~0#1 > main_~n~0#1; 8#L51-1true [2022-11-16 11:20:13,843 INFO L750 eck$LassoCheckResult]: Loop: 8#L51-1true assume !!(main_~r~0#1 < 2 * main_~p~0#1 + main_~q~0#1); 4#L51true assume !(4 * (if main_~q~0#1 < 0 && 0 != main_~q~0#1 % 4 then 1 + main_~q~0#1 / 4 else main_~q~0#1 / 4) == main_~q~0#1 && 2 * (if main_~p~0#1 < 0 && 0 != main_~p~0#1 % 2 then 1 + main_~p~0#1 / 2 else main_~p~0#1 / 2) == main_~p~0#1); 8#L51-1true [2022-11-16 11:20:13,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-16 11:20:13,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:13,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132820953] [2022-11-16 11:20:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:13,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:13,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:20:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:14,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:20:14,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:14,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1420, now seen corresponding path program 1 times [2022-11-16 11:20:14,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:14,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625857379] [2022-11-16 11:20:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:14,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:14,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:20:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:14,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:20:14,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash 28693997, now seen corresponding path program 1 times [2022-11-16 11:20:14,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:14,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164079725] [2022-11-16 11:20:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:14,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:14,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:20:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:14,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:20:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:14,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:20:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:20:14,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 11:20:14 BoogieIcfgContainer [2022-11-16 11:20:14,542 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 11:20:14,543 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:20:14,543 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:20:14,544 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:20:14,544 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:20:13" (3/4) ... [2022-11-16 11:20:14,547 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-16 11:20:14,611 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:20:14,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:20:14,613 INFO L158 Benchmark]: Toolchain (without parser) took 1673.01ms. Allocated memory is still 134.2MB. Free memory was 100.8MB in the beginning and 68.6MB in the end (delta: 32.2MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2022-11-16 11:20:14,614 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 81.8MB. Free memory is still 34.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:20:14,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.46ms. Allocated memory is still 134.2MB. Free memory was 100.8MB in the beginning and 108.0MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:20:14,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.55ms. Allocated memory is still 134.2MB. Free memory was 108.0MB in the beginning and 106.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:20:14,621 INFO L158 Benchmark]: Boogie Preprocessor took 30.64ms. Allocated memory is still 134.2MB. Free memory was 106.8MB in the beginning and 105.9MB in the end (delta: 851.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:20:14,621 INFO L158 Benchmark]: RCFGBuilder took 371.23ms. Allocated memory is still 134.2MB. Free memory was 105.5MB in the beginning and 96.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:20:14,622 INFO L158 Benchmark]: BuchiAutomizer took 872.08ms. Allocated memory is still 134.2MB. Free memory was 96.3MB in the beginning and 70.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-16 11:20:14,623 INFO L158 Benchmark]: Witness Printer took 67.93ms. Allocated memory is still 134.2MB. Free memory was 70.3MB in the beginning and 68.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:20:14,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 81.8MB. Free memory is still 34.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.46ms. Allocated memory is still 134.2MB. Free memory was 100.8MB in the beginning and 108.0MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.55ms. Allocated memory is still 134.2MB. Free memory was 108.0MB in the beginning and 106.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.64ms. Allocated memory is still 134.2MB. Free memory was 106.8MB in the beginning and 105.9MB in the end (delta: 851.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 371.23ms. Allocated memory is still 134.2MB. Free memory was 105.5MB in the beginning and 96.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 872.08ms. Allocated memory is still 134.2MB. Free memory was 96.3MB in the beginning and 70.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 67.93ms. Allocated memory is still 134.2MB. Free memory was 70.3MB in the beginning and 68.6MB in the end (delta: 1.7MB). 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 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 41]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L22] int n, p, q, r, h; [L24] n = __VERIFIER_nondet_int() [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 VAL [h=0, n=0, p=0, q=1, r=0] [L40] COND TRUE q > n VAL [h=0, n=0, p=0, q=1, r=0] Loop: [L41] COND TRUE r < 2 * p + q [L51] COND FALSE !(4 * (q / 4) == q && 2 * (p / 2) == p) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L22] int n, p, q, r, h; [L24] n = __VERIFIER_nondet_int() [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 VAL [h=0, n=0, p=0, q=1, r=0] [L40] COND TRUE q > n VAL [h=0, n=0, p=0, q=1, r=0] Loop: [L41] COND TRUE r < 2 * p + q [L51] COND FALSE !(4 * (q / 4) == q && 2 * (p / 2) == p) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-16 11:20:14,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab42a330-207c-40d5-bb78-88337fba3a26/bin/uautomizer-tPACEb0tL8/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)