./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --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 3e7687da568dfe273ac225f01dbc8df1f76ef15d8b8e5d222cf6fab4c622d621 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:36:56,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:36:56,565 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-23 22:36:56,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:36:56,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:36:56,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:36:56,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:36:56,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:36:56,622 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:36:56,627 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:36:56,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:36:56,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:36:56,630 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:36:56,632 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-23 22:36:56,633 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-23 22:36:56,633 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-23 22:36:56,633 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-23 22:36:56,636 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-23 22:36:56,636 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-23 22:36:56,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:36:56,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-23 22:36:56,638 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:36:56,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:36:56,638 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:36:56,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:36:56,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-23 22:36:56,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-23 22:36:56,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-23 22:36:56,640 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:36:56,641 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:36:56,642 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:36:56,642 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-23 22:36:56,643 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:36:56,643 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:36:56,643 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:36:56,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:36:56,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:36:56,644 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-23 22:36:56,645 INFO L153 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_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7687da568dfe273ac225f01dbc8df1f76ef15d8b8e5d222cf6fab4c622d621 [2023-11-23 22:36:56,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:36:57,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:36:57,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:36:57,032 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:36:57,033 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:36:57,034 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2023-11-23 22:37:00,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:37:00,228 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:37:00,229 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2023-11-23 22:37:00,237 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/data/7bb938d44/8c8aab4e680d4482948c0af5dbf19420/FLAG20490a17e [2023-11-23 22:37:00,255 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/data/7bb938d44/8c8aab4e680d4482948c0af5dbf19420 [2023-11-23 22:37:00,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:37:00,259 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:37:00,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:37:00,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:37:00,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:37:00,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6eeea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00, skipping insertion in model container [2023-11-23 22:37:00,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,294 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:37:00,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:37:00,526 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:37:00,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:37:00,584 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:37:00,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00 WrapperNode [2023-11-23 22:37:00,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:37:00,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:37:00,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:37:00,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:37:00,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,603 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,625 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2023-11-23 22:37:00,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:37:00,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:37:00,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:37:00,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:37:00,644 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,647 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,654 INFO L189 HeapSplitter]: Split 0 memory accesses to 0 slices as follows [] [2023-11-23 22:37:00,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,661 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,662 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:37:00,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:37:00,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:37:00,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:37:00,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (1/1) ... [2023-11-23 22:37:00,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:37:00,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:00,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:37:00,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-23 22:37:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:37:00,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:37:00,827 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:37:00,829 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:37:00,982 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:37:00,991 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:37:00,992 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:37:00,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:37:00 BoogieIcfgContainer [2023-11-23 22:37:00,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:37:00,995 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-23 22:37:00,995 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-23 22:37:01,000 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-23 22:37:01,001 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:37:01,001 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 10:37:00" (1/3) ... [2023-11-23 22:37:01,002 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69112efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 10:37:01, skipping insertion in model container [2023-11-23 22:37:01,002 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:37:01,002 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:00" (2/3) ... [2023-11-23 22:37:01,003 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69112efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 10:37:01, skipping insertion in model container [2023-11-23 22:37:01,003 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:37:01,003 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:37:00" (3/3) ... [2023-11-23 22:37:01,005 INFO L332 chiAutomizerObserver]: Analyzing ICFG dijkstra2-both-nt.c [2023-11-23 22:37:01,088 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-23 22:37:01,088 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-23 22:37:01,088 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-23 22:37:01,088 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-23 22:37:01,089 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-23 22:37:01,089 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-23 22:37:01,089 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-23 22:37:01,090 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-23 22:37:01,095 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) [2023-11-23 22:37:01,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-23 22:37:01,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:37:01,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:37:01,123 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-23 22:37:01,123 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-23 22:37:01,126 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-23 22:37:01,126 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) [2023-11-23 22:37:01,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-23 22:37:01,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:37:01,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:37:01,129 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-23 22:37:01,130 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-23 22:37:01,139 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~n~0#1, main_~p~0#1, main_~q~0#1, main_~r~0#1, main_~h~0#1;havoc main_~n~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_~r~0#1;havoc main_~h~0#1;havoc main_#t~nondet0#1;main_~n~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := 0;main_~q~0#1 := 1;main_~r~0#1 := main_~n~0#1;main_~h~0#1 := 0; 8#L40true assume main_~q~0#1 > main_~n~0#1; 9#L51-1true [2023-11-23 22:37:01,140 INFO L750 eck$LassoCheckResult]: Loop: 9#L51-1true assume !!(main_~p~0#1 * main_~p~0#1 + main_~r~0#1 * main_~q~0#1 == main_~n~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); 9#L51-1true [2023-11-23 22:37:01,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-23 22:37:01,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:01,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975382086] [2023-11-23 22:37:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:01,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:37:01,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:37:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:37:01,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:37:01,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1420, now seen corresponding path program 1 times [2023-11-23 22:37:01,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:01,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569126587] [2023-11-23 22:37:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:01,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:01,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:37:01,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271547017] [2023-11-23 22:37:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:01,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:01,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:01,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:37:01,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:37:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:37:01,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:37:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:37:01,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:37:01,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:01,445 INFO L85 PathProgramCache]: Analyzing trace with hash 28693997, now seen corresponding path program 1 times [2023-11-23 22:37:01,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:01,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913870730] [2023-11-23 22:37:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:01,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:01,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:37:01,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602672407] [2023-11-23 22:37:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:01,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:01,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:01,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:37:01,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:37:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:37:01,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:37:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:37:01,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:37:13,932 WARN L293 SmtUtils]: Spent 12.35s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-23 22:37:26,207 WARN L293 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-23 22:37:38,251 WARN L293 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-23 22:37:50,351 WARN L293 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-23 22:37:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:37:50,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:37:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:37:50,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 10:37:50 BoogieIcfgContainer [2023-11-23 22:37:50,419 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-23 22:37:50,422 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:37:50,422 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:37:50,423 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:37:50,424 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:37:00" (3/4) ... [2023-11-23 22:37:50,427 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-23 22:37:50,481 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:37:50,481 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:37:50,485 INFO L158 Benchmark]: Toolchain (without parser) took 50223.45ms. Allocated memory is still 163.6MB. Free memory was 132.8MB in the beginning and 73.0MB in the end (delta: 59.8MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2023-11-23 22:37:50,486 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory was 100.1MB in the beginning and 100.0MB in the end (delta: 83.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:37:50,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.68ms. Allocated memory is still 163.6MB. Free memory was 132.1MB in the beginning and 132.5MB in the end (delta: -401.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 22:37:50,488 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.90ms. Allocated memory is still 163.6MB. Free memory was 132.5MB in the beginning and 131.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:37:50,488 INFO L158 Benchmark]: Boogie Preprocessor took 37.83ms. Allocated memory is still 163.6MB. Free memory was 131.2MB in the beginning and 129.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:37:50,489 INFO L158 Benchmark]: RCFGBuilder took 328.29ms. Allocated memory is still 163.6MB. Free memory was 129.6MB in the beginning and 119.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 22:37:50,490 INFO L158 Benchmark]: BuchiAutomizer took 49424.08ms. Allocated memory is still 163.6MB. Free memory was 119.1MB in the beginning and 75.1MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-23 22:37:50,491 INFO L158 Benchmark]: Witness Printer took 59.81ms. Allocated memory is still 163.6MB. Free memory was 75.1MB in the beginning and 73.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:37:50,495 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory was 100.1MB in the beginning and 100.0MB in the end (delta: 83.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.68ms. Allocated memory is still 163.6MB. Free memory was 132.1MB in the beginning and 132.5MB in the end (delta: -401.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.90ms. Allocated memory is still 163.6MB. Free memory was 132.5MB in the beginning and 131.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.83ms. Allocated memory is still 163.6MB. Free memory was 131.2MB in the beginning and 129.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 328.29ms. Allocated memory is still 163.6MB. Free memory was 129.6MB in the beginning and 119.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 49424.08ms. Allocated memory is still 163.6MB. Free memory was 119.1MB in the beginning and 75.1MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 59.81ms. Allocated memory is still 163.6MB. Free memory was 75.1MB in the beginning and 73.0MB 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 49.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 49.2s. 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 p*p + r*q == n*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 p*p + r*q == n*q [L51] COND FALSE !(4 * (q / 4) == q && 2 * (p / 2) == p) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-23 22:37:50,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:37:50,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:37:50,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5385-ac8f-47fb-abb5-907fbc68e977/bin/uautomizer-verify-zZY32mL2XJ/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)