./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB --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 0.3.0-dev-d790fec [2024-11-27 20:09:39,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:09:39,517 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-27 20:09:39,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:09:39,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:09:39,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:09:39,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:09:39,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:09:39,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:09:39,588 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:09:39,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:09:39,590 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:09:39,590 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:09:39,590 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-27 20:09:39,592 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-27 20:09:39,592 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-27 20:09:39,592 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-27 20:09:39,593 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-27 20:09:39,593 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-27 20:09:39,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:09:39,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-27 20:09:39,593 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:09:39,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:09:39,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:09:39,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:09:39,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-27 20:09:39,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-27 20:09:39,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-27 20:09:39,594 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:09:39,595 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:09:39,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:09:39,595 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-27 20:09:39,595 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:09:39,595 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:09:39,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:09:39,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:09:39,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:09:39,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-27 20:09:39,596 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-27 20:09:39,596 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB 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 [2024-11-27 20:09:39,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:09:39,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:09:40,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:09:40,001 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:09:40,002 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:09:40,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2024-11-27 20:09:43,790 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/data/4eecaff35/e2954b15935548ddb0ccf982ca464a91/FLAG04c271c44 [2024-11-27 20:09:44,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:09:44,113 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/sv-benchmarks/c/termination-nla/dijkstra2-both-nt.c [2024-11-27 20:09:44,155 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/data/4eecaff35/e2954b15935548ddb0ccf982ca464a91/FLAG04c271c44 [2024-11-27 20:09:44,374 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/data/4eecaff35/e2954b15935548ddb0ccf982ca464a91 [2024-11-27 20:09:44,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:09:44,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:09:44,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:09:44,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:09:44,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:09:44,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac70bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44, skipping insertion in model container [2024-11-27 20:09:44,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,407 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:09:44,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:09:44,617 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:09:44,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:09:44,661 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:09:44,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44 WrapperNode [2024-11-27 20:09:44,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:09:44,664 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:09:44,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:09:44,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:09:44,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,705 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-11-27 20:09:44,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:09:44,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:09:44,708 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:09:44,708 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:09:44,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,721 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,732 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-27 20:09:44,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,737 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:09:44,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:09:44,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:09:44,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:09:44,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (1/1) ... [2024-11-27 20:09:44,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 20:09:44,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:44,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 20:09:44,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-27 20:09:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:09:44,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:09:44,912 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:09:44,914 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:09:45,064 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-27 20:09:45,064 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:09:45,082 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:09:45,087 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 20:09:45,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:09:45 BoogieIcfgContainer [2024-11-27 20:09:45,087 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:09:45,088 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-27 20:09:45,088 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-27 20:09:45,097 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-27 20:09:45,098 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:09:45,098 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.11 08:09:44" (1/3) ... [2024-11-27 20:09:45,100 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e6b4394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 08:09:45, skipping insertion in model container [2024-11-27 20:09:45,100 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:09:45,100 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:09:44" (2/3) ... [2024-11-27 20:09:45,102 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e6b4394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 08:09:45, skipping insertion in model container [2024-11-27 20:09:45,102 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:09:45,102 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:09:45" (3/3) ... [2024-11-27 20:09:45,104 INFO L363 chiAutomizerObserver]: Analyzing ICFG dijkstra2-both-nt.c [2024-11-27 20:09:45,165 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-27 20:09:45,165 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-27 20:09:45,166 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-27 20:09:45,166 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-27 20:09:45,166 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-27 20:09:45,166 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-27 20:09:45,166 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-27 20:09:45,166 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-27 20:09:45,172 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) [2024-11-27 20:09:45,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-27 20:09:45,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:09:45,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:09:45,198 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-27 20:09:45,198 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 20:09:45,198 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-27 20:09:45,198 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) [2024-11-27 20:09:45,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-27 20:09:45,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:09:45,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:09:45,200 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-27 20:09:45,200 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 20:09:45,209 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~n~0#1, main_~p~0#1, main_~q~0#1, main_~r~0#1, main_~h~0#1;havoc main_~n~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_~r~0#1;havoc main_~h~0#1;havoc main_#t~nondet0#1;main_~n~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := 0;main_~q~0#1 := 1;main_~r~0#1 := main_~n~0#1;main_~h~0#1 := 0;" "assume main_~q~0#1 > main_~n~0#1;" [2024-11-27 20:09:45,209 INFO L749 eck$LassoCheckResult]: Loop: "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;" "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);" [2024-11-27 20:09:45,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:45,216 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-11-27 20:09:45,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:09:45,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088367543] [2024-11-27 20:09:45,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:45,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:09:45,320 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:09:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:09:45,343 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:09:45,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:45,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1327, now seen corresponding path program 1 times [2024-11-27 20:09:45,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:09:45,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682836450] [2024-11-27 20:09:45,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:45,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:09:45,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767926540] [2024-11-27 20:09:45,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:45,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:45,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:45,389 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:45,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:09:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:09:45,430 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:09:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:09:45,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:09:45,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:45,450 INFO L85 PathProgramCache]: Analyzing trace with hash 28693904, now seen corresponding path program 1 times [2024-11-27 20:09:45,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:09:45,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182651683] [2024-11-27 20:09:45,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:45,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:09:45,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648537459] [2024-11-27 20:09:45,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:45,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:45,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:45,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:45,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:09:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:09:45,529 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:09:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:09:45,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:09:57,686 WARN L286 SmtUtils]: Spent 12.13s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 20:10:09,773 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:10:25,946 WARN L286 SmtUtils]: Spent 16.16s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 299] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 20:10:38,952 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:10:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:38,982 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:39,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.11 08:10:39 BoogieIcfgContainer [2024-11-27 20:10:39,020 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-27 20:10:39,021 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:10:39,021 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:10:39,021 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:10:39,022 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:09:45" (3/4) ... [2024-11-27 20:10:39,025 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-27 20:10:39,075 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:10:39,075 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:10:39,077 INFO L158 Benchmark]: Toolchain (without parser) took 54698.49ms. Allocated memory is still 117.4MB. Free memory was 94.5MB in the beginning and 41.1MB in the end (delta: 53.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-27 20:10:39,079 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 167.8MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:10:39,080 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.49ms. Allocated memory is still 117.4MB. Free memory was 94.5MB in the beginning and 84.2MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:10:39,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.03ms. Allocated memory is still 117.4MB. Free memory was 84.2MB in the beginning and 83.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:10:39,081 INFO L158 Benchmark]: Boogie Preprocessor took 47.12ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 82.3MB in the end (delta: 793.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:10:39,081 INFO L158 Benchmark]: RCFGBuilder took 332.12ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 72.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:10:39,084 INFO L158 Benchmark]: BuchiAutomizer took 53931.46ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 42.8MB in the end (delta: 29.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-27 20:10:39,084 INFO L158 Benchmark]: Witness Printer took 54.58ms. Allocated memory is still 117.4MB. Free memory was 42.8MB in the beginning and 41.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:10:39,088 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 167.8MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.49ms. Allocated memory is still 117.4MB. Free memory was 94.5MB in the beginning and 84.2MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.03ms. Allocated memory is still 117.4MB. Free memory was 84.2MB in the beginning and 83.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.12ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 82.3MB in the end (delta: 793.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 332.12ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 72.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 53931.46ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 42.8MB in the end (delta: 29.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 54.58ms. Allocated memory is still 117.4MB. Free memory was 42.8MB in the beginning and 41.1MB in the end (delta: 1.8MB). There was no memory consumed. 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 53.8s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 53.7s. 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: 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 [n=0, p=0, q=1, r=0] [L40] COND TRUE q > n VAL [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 [n=0, p=0, q=1, r=0] [L40] COND TRUE q > n VAL [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! [2024-11-27 20:10:39,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:10:39,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:10:39,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dbaff89-2006-4777-9dbb-65f89c9ab4d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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)