./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a 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_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU --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 64bit --witnessprinter.graph.data.programhash 9c55a9a6f50b70c8ad02d8f9cdba1133727e3a9a73c5b8d3940178ed4735e2c1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:14:51,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:14:51,626 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-31 22:14:51,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:14:51,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:14:51,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:14:51,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:14:51,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:14:51,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:14:51,678 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:14:51,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:14:51,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:14:51,682 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:14:51,683 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:14:51,683 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:14:51,683 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:14:51,684 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:14:51,684 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:14:51,684 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:14:51,685 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:14:51,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:14:51,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:14:51,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:14:51,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:14:51,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:14:51,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:14:51,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:14:51,690 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:14:51,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:14:51,690 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:14:51,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:14:51,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:14:51,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:14:51,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:14:51,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:14:51,692 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:14:51,693 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_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c55a9a6f50b70c8ad02d8f9cdba1133727e3a9a73c5b8d3940178ed4735e2c1 [2024-10-31 22:14:52,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:14:52,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:14:52,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:14:52,054 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:14:52,055 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:14:52,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c Unable to find full path for "g++" [2024-10-31 22:14:54,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:14:54,428 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:14:54,428 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2024-10-31 22:14:54,434 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/data/f885d1c35/1b2e5615077548afb404c1fbdb13eb4f/FLAG12ea6796d [2024-10-31 22:14:54,783 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/data/f885d1c35/1b2e5615077548afb404c1fbdb13eb4f [2024-10-31 22:14:54,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:14:54,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:14:54,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:54,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:14:54,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:14:54,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:54" (1/1) ... [2024-10-31 22:14:54,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca0aa7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:54, skipping insertion in model container [2024-10-31 22:14:54,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:54" (1/1) ... [2024-10-31 22:14:54,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:14:54,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:54,998 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:14:55,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:55,024 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:14:55,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55 WrapperNode [2024-10-31 22:14:55,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:55,026 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:55,026 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:14:55,026 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:14:55,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,049 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2024-10-31 22:14:55,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:55,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:14:55,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:14:55,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:14:55,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,067 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-31 22:14:55,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:14:55,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:14:55,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:14:55,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:14:55,081 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (1/1) ... [2024-10-31 22:14:55,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:55,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:55,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:55,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:14:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:14:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:14:55,221 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:14:55,223 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:14:55,285 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-10-31 22:14:55,286 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:14:55,298 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:14:55,298 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:14:55,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:55 BoogieIcfgContainer [2024-10-31 22:14:55,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:14:55,300 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:14:55,301 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:14:55,305 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:14:55,305 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:14:55,306 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:14:54" (1/3) ... [2024-10-31 22:14:55,306 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12b1699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:14:55, skipping insertion in model container [2024-10-31 22:14:55,307 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:14:55,307 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:55" (2/3) ... [2024-10-31 22:14:55,307 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12b1699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:14:55, skipping insertion in model container [2024-10-31 22:14:55,307 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:14:55,307 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:55" (3/3) ... [2024-10-31 22:14:55,309 INFO L332 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig2.c [2024-10-31 22:14:55,365 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:14:55,366 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:14:55,366 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:14:55,366 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:14:55,366 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:14:55,366 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:14:55,367 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:14:55,367 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:14:55,371 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2024-10-31 22:14:55,387 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-31 22:14:55,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:14:55,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:14:55,393 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:14:55,393 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:14:55,394 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:14:55,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2024-10-31 22:14:55,395 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-31 22:14:55,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:14:55,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:14:55,396 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:14:55,396 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 22:14:55,404 INFO L745 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2#L19-2true [2024-10-31 22:14:55,404 INFO L747 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 7#L21-2true assume !(main_~x2~0#1 > 1); 4#L21-3true main_~x1~0#1 := 1 + main_~x1~0#1; 2#L19-2true [2024-10-31 22:14:55,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:55,411 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-31 22:14:55,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:55,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349286519] [2024-10-31 22:14:55,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:55,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:55,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:55,522 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:55,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:55,525 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2024-10-31 22:14:55,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:55,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679194859] [2024-10-31 22:14:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:55,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:55,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:55,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679194859] [2024-10-31 22:14:55,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679194859] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:55,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:55,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:14:55,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655284160] [2024-10-31 22:14:55,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:55,616 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-31 22:14:55,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:55,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:14:55,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:14:55,656 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-10-31 22:14:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:55,673 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2024-10-31 22:14:55,674 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2024-10-31 22:14:55,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:14:55,678 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 6 states and 7 transitions. [2024-10-31 22:14:55,680 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-10-31 22:14:55,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-10-31 22:14:55,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2024-10-31 22:14:55,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:14:55,682 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2024-10-31 22:14:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2024-10-31 22:14:55,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2024-10-31 22:14:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-10-31 22:14:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2024-10-31 22:14:55,713 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2024-10-31 22:14:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:14:55,718 INFO L425 stractBuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2024-10-31 22:14:55,719 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 22:14:55,719 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2024-10-31 22:14:55,720 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 22:14:55,720 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:14:55,720 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:14:55,720 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:14:55,721 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 22:14:55,721 INFO L745 eck$LassoCheckResult]: Stem: 31#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 32#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 28#L19-2 [2024-10-31 22:14:55,721 INFO L747 eck$LassoCheckResult]: Loop: 28#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 29#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 33#L21-2 assume !(main_~x2~0#1 > 1); 30#L21-3 main_~x1~0#1 := 1 + main_~x1~0#1; 28#L19-2 [2024-10-31 22:14:55,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:55,722 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-10-31 22:14:55,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:55,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040059375] [2024-10-31 22:14:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:55,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:55,728 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:55,732 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:55,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1271024, now seen corresponding path program 1 times [2024-10-31 22:14:55,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:55,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655888899] [2024-10-31 22:14:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:55,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:55,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:55,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655888899] [2024-10-31 22:14:55,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655888899] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:55,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492243457] [2024-10-31 22:14:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:55,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:55,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:55,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:55,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:14:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:55,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:14:55,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:55,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:14:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:55,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492243457] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:14:55,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:14:55,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-31 22:14:55,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623333405] [2024-10-31 22:14:55,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:14:55,957 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-31 22:14:55,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:55,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:14:55,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:14:55,959 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-10-31 22:14:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:55,982 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2024-10-31 22:14:55,982 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2024-10-31 22:14:55,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-31 22:14:55,983 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2024-10-31 22:14:55,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-10-31 22:14:55,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-10-31 22:14:55,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2024-10-31 22:14:55,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:14:55,984 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-10-31 22:14:55,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2024-10-31 22:14:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-10-31 22:14:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) [2024-10-31 22:14:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-10-31 22:14:55,986 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-10-31 22:14:55,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:14:55,988 INFO L425 stractBuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-10-31 22:14:55,988 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 22:14:55,988 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2024-10-31 22:14:55,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-31 22:14:55,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:14:55,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:14:55,990 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:14:55,990 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2024-10-31 22:14:55,990 INFO L745 eck$LassoCheckResult]: Stem: 73#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 74#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 70#L19-2 [2024-10-31 22:14:55,990 INFO L747 eck$LassoCheckResult]: Loop: 70#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 71#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 75#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 78#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 77#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 76#L21-2 assume !(main_~x2~0#1 > 1); 72#L21-3 main_~x1~0#1 := 1 + main_~x1~0#1; 70#L19-2 [2024-10-31 22:14:55,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:55,991 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-10-31 22:14:55,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:55,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638652076] [2024-10-31 22:14:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:55,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:55,997 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:56,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:56,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:56,001 INFO L85 PathProgramCache]: Analyzing trace with hash -787882000, now seen corresponding path program 2 times [2024-10-31 22:14:56,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:56,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612949190] [2024-10-31 22:14:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:56,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:56,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612949190] [2024-10-31 22:14:56,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612949190] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:56,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685638678] [2024-10-31 22:14:56,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:14:56,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:56,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:56,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:14:56,271 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:14:56,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:14:56,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:14:56,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:56,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:14:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:56,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685638678] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:14:56,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:14:56,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-10-31 22:14:56,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532281171] [2024-10-31 22:14:56,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:14:56,431 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-31 22:14:56,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:14:56,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:14:56,433 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 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) [2024-10-31 22:14:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:56,474 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2024-10-31 22:14:56,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2024-10-31 22:14:56,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2024-10-31 22:14:56,476 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 15 transitions. [2024-10-31 22:14:56,476 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2024-10-31 22:14:56,476 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-10-31 22:14:56,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2024-10-31 22:14:56,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:14:56,477 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-10-31 22:14:56,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2024-10-31 22:14:56,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-10-31 22:14:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 13 states have internal predecessors, (15), 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) [2024-10-31 22:14:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-10-31 22:14:56,479 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-10-31 22:14:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:14:56,481 INFO L425 stractBuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-10-31 22:14:56,481 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 22:14:56,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 15 transitions. [2024-10-31 22:14:56,482 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2024-10-31 22:14:56,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:14:56,482 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:14:56,483 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:14:56,483 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2024-10-31 22:14:56,483 INFO L745 eck$LassoCheckResult]: Stem: 146#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 143#L19-2 [2024-10-31 22:14:56,483 INFO L747 eck$LassoCheckResult]: Loop: 143#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 144#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 148#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 156#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 155#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 154#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 153#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 152#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 151#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 150#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 149#L21-2 assume !(main_~x2~0#1 > 1); 145#L21-3 main_~x1~0#1 := 1 + main_~x1~0#1; 143#L19-2 [2024-10-31 22:14:56,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:56,484 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-10-31 22:14:56,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:56,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004220179] [2024-10-31 22:14:56,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:56,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:56,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:56,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:56,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:56,493 INFO L85 PathProgramCache]: Analyzing trace with hash -219093776, now seen corresponding path program 3 times [2024-10-31 22:14:56,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:56,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137362321] [2024-10-31 22:14:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:56,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:56,511 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:56,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:56,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:56,527 INFO L85 PathProgramCache]: Analyzing trace with hash 995055026, now seen corresponding path program 1 times [2024-10-31 22:14:56,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:56,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258416071] [2024-10-31 22:14:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:56,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:56,543 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:56,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:56,738 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:14:56,739 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:14:56,739 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:14:56,740 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:14:56,740 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:14:56,740 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:56,740 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:14:56,740 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:14:56,740 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration4_Loop [2024-10-31 22:14:56,740 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:14:56,741 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:14:56,761 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:56,774 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:56,782 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:56,789 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:56,875 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:14:56,876 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:14:56,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:56,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:56,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:56,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-31 22:14:56,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:14:56,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:14:56,925 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:14:56,925 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:14:56,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-31 22:14:56,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:56,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:56,947 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:56,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-31 22:14:56,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:14:56,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:14:56,976 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:14:56,977 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:14:57,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-31 22:14:57,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:57,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:57,009 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:57,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-31 22:14:57,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:14:57,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:14:57,036 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:14:57,036 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x2~0#1=0} Honda state: {ULTIMATE.start_main_~x2~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:14:57,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-31 22:14:57,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:57,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:57,062 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:57,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-31 22:14:57,066 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:14:57,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:14:57,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-31 22:14:57,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:57,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:57,114 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:57,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-31 22:14:57,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:14:57,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:14:57,172 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:14:57,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-31 22:14:57,179 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:14:57,179 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:14:57,179 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:14:57,180 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:14:57,180 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:14:57,180 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:57,180 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:14:57,180 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:14:57,180 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration4_Loop [2024-10-31 22:14:57,180 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:14:57,181 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:14:57,182 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:57,191 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:57,198 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:57,204 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:57,268 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:14:57,274 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:14:57,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:57,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:57,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:57,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-31 22:14:57,281 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:14:57,300 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:14:57,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:14:57,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:14:57,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:14:57,306 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:14:57,306 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:14:57,316 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:14:57,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:57,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:57,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:57,335 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:57,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-31 22:14:57,338 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:14:57,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:14:57,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:14:57,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:14:57,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:14:57,354 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:14:57,354 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:14:57,362 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:14:57,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-10-31 22:14:57,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:57,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:57,386 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:57,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-31 22:14:57,389 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:14:57,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:14:57,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:14:57,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:14:57,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:14:57,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:14:57,407 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:14:57,408 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:14:57,413 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:14:57,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:57,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:57,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:57,436 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:57,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-31 22:14:57,440 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:14:57,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:14:57,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:14:57,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:14:57,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:14:57,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:14:57,459 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:14:57,460 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:14:57,466 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:14:57,470 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:14:57,470 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:14:57,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:57,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:57,475 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:57,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-31 22:14:57,478 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:14:57,479 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:14:57,479 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:14:57,480 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x1~0#1) = -2*ULTIMATE.start_main_~x1~0#1 + 21 Supporting invariants [] [2024-10-31 22:14:57,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:57,510 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:14:57,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:57,558 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:14:57,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:57,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:14:57,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-31 22:14:57,737 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-31 22:14:57,740 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 15 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-10-31 22:14:57,803 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 15 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Result 26 states and 29 transitions. Complement of second has 4 states. [2024-10-31 22:14:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-10-31 22:14:57,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-10-31 22:14:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-10-31 22:14:57,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 12 letters. [2024-10-31 22:14:57,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:14:57,811 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 14 letters. Loop has 12 letters. [2024-10-31 22:14:57,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:14:57,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 24 letters. [2024-10-31 22:14:57,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:14:57,814 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 29 transitions. [2024-10-31 22:14:57,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-31 22:14:57,817 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 28 transitions. [2024-10-31 22:14:57,819 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-10-31 22:14:57,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2024-10-31 22:14:57,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 28 transitions. [2024-10-31 22:14:57,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:14:57,820 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-10-31 22:14:57,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 28 transitions. [2024-10-31 22:14:57,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2024-10-31 22:14:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 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) [2024-10-31 22:14:57,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-10-31 22:14:57,825 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-10-31 22:14:57,826 INFO L425 stractBuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-10-31 22:14:57,826 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-31 22:14:57,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2024-10-31 22:14:57,826 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-31 22:14:57,827 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:14:57,827 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:14:57,827 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-31 22:14:57,827 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-31 22:14:57,827 INFO L745 eck$LassoCheckResult]: Stem: 249#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 250#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 244#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 246#L21-2 [2024-10-31 22:14:57,827 INFO L747 eck$LassoCheckResult]: Loop: 246#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 246#L21-2 [2024-10-31 22:14:57,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:57,830 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-10-31 22:14:57,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:57,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051144782] [2024-10-31 22:14:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:57,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:57,842 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:57,849 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:57,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:57,850 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2024-10-31 22:14:57,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:57,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899763548] [2024-10-31 22:14:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:57,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:57,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:57,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:57,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:57,867 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2024-10-31 22:14:57,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:57,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143694176] [2024-10-31 22:14:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:57,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:57,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:57,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:57,907 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:14:57,907 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:14:57,907 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:14:57,907 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:14:57,907 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:14:57,907 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:57,908 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:14:57,908 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:14:57,908 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration5_Loop [2024-10-31 22:14:57,908 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:14:57,908 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:14:57,909 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:57,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:57,924 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:58,007 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:14:58,011 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:14:58,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:58,016 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:58,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-31 22:14:58,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:14:58,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:58,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:14:58,059 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:14:58,059 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:14:58,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:58,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:58,078 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:58,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-31 22:14:58,081 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:14:58,081 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:14:58,103 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:14:58,104 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 22:14:58,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:58,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:58,121 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:58,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-31 22:14:58,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:14:58,123 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:14:58,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-31 22:14:58,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:58,157 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:58,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-31 22:14:58,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:14:58,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:14:58,215 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:14:58,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:58,220 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:14:58,221 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:14:58,221 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:14:58,221 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:14:58,221 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:14:58,221 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,221 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:14:58,221 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:14:58,221 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration5_Loop [2024-10-31 22:14:58,221 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:14:58,221 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:14:58,223 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:58,231 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:58,236 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:58,300 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:14:58,300 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:14:58,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:58,303 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:58,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-31 22:14:58,305 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:14:58,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:14:58,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:14:58,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:14:58,321 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:14:58,327 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:14:58,328 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:14:58,335 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:14:58,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-31 22:14:58,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:58,357 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:58,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-31 22:14:58,361 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:14:58,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:14:58,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:14:58,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:14:58,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:14:58,381 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:14:58,381 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:14:58,388 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:14:58,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-31 22:14:58,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:58,413 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:58,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-31 22:14:58,417 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:14:58,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:14:58,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:14:58,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:14:58,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:14:58,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:14:58,441 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:14:58,441 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:14:58,444 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:14:58,449 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:14:58,449 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-31 22:14:58,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:58,453 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:58,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-31 22:14:58,455 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:14:58,455 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:14:58,455 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:14:58,455 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0#1) = 1*ULTIMATE.start_main_~x2~0#1 Supporting invariants [] [2024-10-31 22:14:58,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:58,477 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:14:58,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:58,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:14:58,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:58,510 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:14:58,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:58,512 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-10-31 22:14:58,512 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2024-10-31 22:14:58,525 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Result 28 states and 32 transitions. Complement of second has 3 states. [2024-10-31 22:14:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-10-31 22:14:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2024-10-31 22:14:58,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2024-10-31 22:14:58,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 3 letters. Loop has 1 letters. [2024-10-31 22:14:58,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:14:58,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 4 letters. Loop has 1 letters. [2024-10-31 22:14:58,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:14:58,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 3 letters. Loop has 2 letters. [2024-10-31 22:14:58,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:14:58,529 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 32 transitions. [2024-10-31 22:14:58,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-31 22:14:58,530 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 29 transitions. [2024-10-31 22:14:58,530 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2024-10-31 22:14:58,531 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2024-10-31 22:14:58,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 29 transitions. [2024-10-31 22:14:58,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:14:58,531 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-10-31 22:14:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 29 transitions. [2024-10-31 22:14:58,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2024-10-31 22:14:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 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) [2024-10-31 22:14:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-10-31 22:14:58,534 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-10-31 22:14:58,534 INFO L425 stractBuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-10-31 22:14:58,534 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-31 22:14:58,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2024-10-31 22:14:58,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-31 22:14:58,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:14:58,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:14:58,536 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1, 1] [2024-10-31 22:14:58,536 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-31 22:14:58,536 INFO L745 eck$LassoCheckResult]: Stem: 321#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 322#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 316#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 317#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 323#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 331#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 330#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 329#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 328#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 327#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 326#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 325#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 324#L21-2 assume !(main_~x2~0#1 > 1); 320#L21-3 main_~x1~0#1 := 1 + main_~x1~0#1; 318#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 319#L21-2 [2024-10-31 22:14:58,537 INFO L747 eck$LassoCheckResult]: Loop: 319#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 319#L21-2 [2024-10-31 22:14:58,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash 781934745, now seen corresponding path program 2 times [2024-10-31 22:14:58,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:58,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591110527] [2024-10-31 22:14:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:58,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:58,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:58,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:58,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:58,563 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2024-10-31 22:14:58,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:58,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415576784] [2024-10-31 22:14:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:58,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:58,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:58,571 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:58,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:58,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1529826661, now seen corresponding path program 3 times [2024-10-31 22:14:58,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:58,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852499432] [2024-10-31 22:14:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:58,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:14:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:14:58,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:14:58,651 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:14:58,651 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:14:58,651 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:14:58,651 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:14:58,652 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:14:58,652 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,652 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:14:58,652 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:14:58,652 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration6_Loop [2024-10-31 22:14:58,652 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:14:58,652 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:14:58,654 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:58,662 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:58,667 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:58,715 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:14:58,716 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:14:58,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:58,718 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:58,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-31 22:14:58,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:14:58,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:14:58,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-10-31 22:14:58,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:58,763 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:58,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-31 22:14:58,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:14:58,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:14:58,836 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:14:58,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-10-31 22:14:58,841 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:14:58,841 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:14:58,841 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:14:58,841 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:14:58,841 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:14:58,841 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,841 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:14:58,842 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:14:58,842 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration6_Loop [2024-10-31 22:14:58,842 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:14:58,842 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:14:58,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:58,857 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:58,867 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:14:58,958 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:14:58,958 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:14:58,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:58,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:58,962 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:58,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-31 22:14:58,972 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 22:14:58,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:14:58,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:14:58,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:14:58,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:14:58,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:14:58,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:14:58,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:14:58,996 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:14:59,002 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:14:59,002 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-31 22:14:59,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:14:59,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:59,006 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:59,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-31 22:14:59,008 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:14:59,009 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:14:59,009 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:14:59,009 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0#1) = 1*ULTIMATE.start_main_~x2~0#1 Supporting invariants [] [2024-10-31 22:14:59,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:59,031 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:14:59,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:59,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:14:59,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:59,096 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:14:59,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:59,097 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-10-31 22:14:59,098 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-31 22:14:59,107 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) Result 26 states and 29 transitions. Complement of second has 3 states. [2024-10-31 22:14:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-10-31 22:14:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-31 22:14:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2024-10-31 22:14:59,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 15 letters. Loop has 1 letters. [2024-10-31 22:14:59,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:14:59,110 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:14:59,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:59,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:14:59,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:59,172 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:14:59,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:59,173 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2024-10-31 22:14:59,173 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-31 22:14:59,183 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) Result 26 states and 29 transitions. Complement of second has 3 states. [2024-10-31 22:14:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-10-31 22:14:59,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-31 22:14:59,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2024-10-31 22:14:59,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 15 letters. Loop has 1 letters. [2024-10-31 22:14:59,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:14:59,185 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:14:59,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:59,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:14:59,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:59,250 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:14:59,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:59,251 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-10-31 22:14:59,251 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-31 22:14:59,259 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) Result 17 states and 19 transitions. Complement of second has 2 states. [2024-10-31 22:14:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-10-31 22:14:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-31 22:14:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2024-10-31 22:14:59,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 15 letters. Loop has 1 letters. [2024-10-31 22:14:59,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:14:59,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 16 letters. Loop has 1 letters. [2024-10-31 22:14:59,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:14:59,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 15 letters. Loop has 2 letters. [2024-10-31 22:14:59,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:14:59,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2024-10-31 22:14:59,264 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-31 22:14:59,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2024-10-31 22:14:59,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-31 22:14:59,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-31 22:14:59,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-31 22:14:59,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:14:59,265 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:14:59,265 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:14:59,265 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:14:59,265 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-31 22:14:59,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-31 22:14:59,265 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-31 22:14:59,265 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-31 22:14:59,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 31.10 10:14:59 BoogieIcfgContainer [2024-10-31 22:14:59,274 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-31 22:14:59,275 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:14:59,275 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:14:59,275 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:14:59,276 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:55" (3/4) ... [2024-10-31 22:14:59,279 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:14:59,279 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:14:59,280 INFO L158 Benchmark]: Toolchain (without parser) took 4493.26ms. Allocated memory is still 151.0MB. Free memory was 119.3MB in the beginning and 75.8MB in the end (delta: 43.5MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2024-10-31 22:14:59,280 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:14:59,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.84ms. Allocated memory is still 151.0MB. Free memory was 119.3MB in the beginning and 108.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-31 22:14:59,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.67ms. Allocated memory is still 151.0MB. Free memory was 108.1MB in the beginning and 106.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:14:59,281 INFO L158 Benchmark]: Boogie Preprocessor took 27.26ms. Allocated memory is still 151.0MB. Free memory was 106.5MB in the beginning and 105.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:14:59,282 INFO L158 Benchmark]: RCFGBuilder took 220.38ms. Allocated memory is still 151.0MB. Free memory was 105.3MB in the beginning and 96.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-31 22:14:59,282 INFO L158 Benchmark]: BuchiAutomizer took 3973.98ms. Allocated memory is still 151.0MB. Free memory was 96.4MB in the beginning and 76.1MB in the end (delta: 20.3MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2024-10-31 22:14:59,283 INFO L158 Benchmark]: Witness Printer took 4.75ms. Allocated memory is still 151.0MB. Free memory was 76.1MB in the beginning and 75.8MB in the end (delta: 280.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:14:59,285 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.84ms. Allocated memory is still 151.0MB. Free memory was 119.3MB in the beginning and 108.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.67ms. Allocated memory is still 151.0MB. Free memory was 108.1MB in the beginning and 106.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.26ms. Allocated memory is still 151.0MB. Free memory was 106.5MB in the beginning and 105.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 220.38ms. Allocated memory is still 151.0MB. Free memory was 105.3MB in the beginning and 96.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3973.98ms. Allocated memory is still 151.0MB. Free memory was 96.4MB in the beginning and 76.1MB in the end (delta: 20.3MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * Witness Printer took 4.75ms. Allocated memory is still 151.0MB. Free memory was 76.1MB in the beginning and 75.8MB in the end (delta: 280.3kB). 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 Your program was decomposed into 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (((long) -2 * x1) + 21) and consists of 3 locations. One deterministic module has affine ranking function x2 and consists of 2 locations. One nondeterministic module has affine ranking function x2 and consists of 2 locations. 3 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 7 iterations. TraceHistogramMax:9. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations. 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 [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 45/45 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 38 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-31 22:14:59,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-10-31 22:14:59,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-10-31 22:14:59,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:59,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:15:00,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe79c0b8-8796-4c1c-b688-804de187efba/bin/uautomizer-verify-4GaUIPS5ZU/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 Result: TRUE