./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/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_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9c55a9a6f50b70c8ad02d8f9cdba1133727e3a9a73c5b8d3940178ed4735e2c1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:25:45,134 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:25:45,214 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-28 04:25:45,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:25:45,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:25:45,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:25:45,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:25:45,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:25:45,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:25:45,254 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:25:45,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:25:45,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:25:45,256 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:25:45,256 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-28 04:25:45,258 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-28 04:25:45,258 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-28 04:25:45,258 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-28 04:25:45,258 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-28 04:25:45,258 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-28 04:25:45,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:25:45,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-28 04:25:45,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:25:45,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:25:45,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-28 04:25:45,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-28 04:25:45,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-28 04:25:45,260 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:25:45,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:25:45,260 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-28 04:25:45,260 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:25:45,260 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:25:45,260 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:25:45,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:25:45,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:25:45,261 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-28 04:25:45,261 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-28 04:25:45,261 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c55a9a6f50b70c8ad02d8f9cdba1133727e3a9a73c5b8d3940178ed4735e2c1 [2024-11-28 04:25:45,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:25:45,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:25:45,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:25:45,641 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:25:45,642 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:25:45,643 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2024-11-28 04:25:48,886 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/data/03c550d66/44f53cb8a8d149a8949dfee9ebdab72a/FLAGf2c856df3 [2024-11-28 04:25:49,151 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:25:49,152 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2024-11-28 04:25:49,160 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/data/03c550d66/44f53cb8a8d149a8949dfee9ebdab72a/FLAGf2c856df3 [2024-11-28 04:25:49,179 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/data/03c550d66/44f53cb8a8d149a8949dfee9ebdab72a [2024-11-28 04:25:49,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:25:49,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:25:49,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:25:49,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:25:49,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:25:49,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d50f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49, skipping insertion in model container [2024-11-28 04:25:49,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,213 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:25:49,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:25:49,393 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:25:49,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:25:49,424 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:25:49,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49 WrapperNode [2024-11-28 04:25:49,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:25:49,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:25:49,427 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:25:49,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:25:49,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,459 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2024-11-28 04:25:49,459 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:25:49,460 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:25:49,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:25:49,460 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:25:49,471 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,471 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,477 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-28 04:25:49,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,478 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,479 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:25:49,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:25:49,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:25:49,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:25:49,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (1/1) ... [2024-11-28 04:25:49,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:49,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:49,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:49,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-28 04:25:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:25:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:25:49,663 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:25:49,665 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:25:49,755 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-28 04:25:49,755 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:25:49,767 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:25:49,769 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:25:49,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:25:49 BoogieIcfgContainer [2024-11-28 04:25:49,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:25:49,771 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-28 04:25:49,772 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-28 04:25:49,779 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-28 04:25:49,780 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 04:25:49,782 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 04:25:49" (1/3) ... [2024-11-28 04:25:49,783 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@595f41ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 04:25:49, skipping insertion in model container [2024-11-28 04:25:49,784 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 04:25:49,784 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:49" (2/3) ... [2024-11-28 04:25:49,784 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@595f41ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 04:25:49, skipping insertion in model container [2024-11-28 04:25:49,785 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 04:25:49,785 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:25:49" (3/3) ... [2024-11-28 04:25:49,787 INFO L363 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig2.c [2024-11-28 04:25:49,872 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-28 04:25:49,873 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-28 04:25:49,873 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-28 04:25:49,873 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-28 04:25:49,874 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-28 04:25:49,874 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-28 04:25:49,874 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-28 04:25:49,875 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-28 04:25:49,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:49,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-28 04:25:49,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 04:25:49,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 04:25:49,908 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 04:25:49,908 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-28 04:25:49,908 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-28 04:25:49,909 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:49,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-28 04:25:49,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 04:25:49,911 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 04:25:49,911 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 04:25:49,911 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-28 04:25:49,919 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-28 04:25:49,920 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x1~0#1 <= 10;" "main_~x2~0#1 := 10;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" [2024-11-28 04:25:49,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:49,927 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-28 04:25:49,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:49,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823737974] [2024-11-28 04:25:49,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:49,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:50,031 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:50,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:50,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:50,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1174027, now seen corresponding path program 1 times [2024-11-28 04:25:50,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:50,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342755052] [2024-11-28 04:25:50,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:50,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:50,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 04:25:50,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342755052] [2024-11-28 04:25:50,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342755052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904321878] [2024-11-28 04:25:50,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:50,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:50,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:50,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:50,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:25:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:50,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:25:50,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:50,254 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:25:50,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904321878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:25:50,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:25:50,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-28 04:25:50,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291988060] [2024-11-28 04:25:50,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:25:50,293 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-28 04:25:50,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 04:25:50,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:25:50,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:25:50,334 INFO L87 Difference]: Start difference. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2024-11-28 04:25:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:50,374 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2024-11-28 04:25:50,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2024-11-28 04:25:50,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2024-11-28 04:25:50,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 11 transitions. [2024-11-28 04:25:50,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-11-28 04:25:50,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-11-28 04:25:50,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2024-11-28 04:25:50,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 04:25:50,385 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-11-28 04:25:50,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2024-11-28 04:25:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-28 04:25:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-11-28 04:25:50,415 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-11-28 04:25:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:25:50,421 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-11-28 04:25:50,421 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-28 04:25:50,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2024-11-28 04:25:50,422 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2024-11-28 04:25:50,422 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 04:25:50,422 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 04:25:50,423 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 04:25:50,423 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2024-11-28 04:25:50,423 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#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;" [2024-11-28 04:25:50,423 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x1~0#1 <= 10;" "main_~x2~0#1 := 10;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" [2024-11-28 04:25:50,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-28 04:25:50,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:50,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448563646] [2024-11-28 04:25:50,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:50,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:50,428 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:50,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:50,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:50,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1846436115, now seen corresponding path program 1 times [2024-11-28 04:25:50,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:50,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331404180] [2024-11-28 04:25:50,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:50,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:50,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 04:25:50,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331404180] [2024-11-28 04:25:50,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331404180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:50,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370418023] [2024-11-28 04:25:50,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:50,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:50,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:50,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:50,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:25:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:50,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:25:50,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:50,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:25:50,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370418023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:25:50,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:25:50,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-28 04:25:50,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687446925] [2024-11-28 04:25:50,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:25:50,783 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-28 04:25:50,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 04:25:50,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:25:50,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:25:50,785 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:50,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:50,834 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-11-28 04:25:50,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 19 transitions. [2024-11-28 04:25:50,835 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2024-11-28 04:25:50,836 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 19 transitions. [2024-11-28 04:25:50,836 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2024-11-28 04:25:50,836 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2024-11-28 04:25:50,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 19 transitions. [2024-11-28 04:25:50,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 04:25:50,836 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-28 04:25:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 19 transitions. [2024-11-28 04:25:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-28 04:25:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 17 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) [2024-11-28 04:25:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-28 04:25:50,838 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-28 04:25:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:25:50,840 INFO L425 stractBuchiCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-28 04:25:50,840 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-28 04:25:50,840 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 19 transitions. [2024-11-28 04:25:50,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2024-11-28 04:25:50,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 04:25:50,841 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 04:25:50,841 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 04:25:50,841 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 6, 1, 1, 1, 1] [2024-11-28 04:25:50,842 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-28 04:25:50,842 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x1~0#1 <= 10;" "main_~x2~0#1 := 10;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" [2024-11-28 04:25:50,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:50,842 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-11-28 04:25:50,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:50,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212872590] [2024-11-28 04:25:50,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:50,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:50,847 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:50,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:50,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash 790692643, now seen corresponding path program 2 times [2024-11-28 04:25:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:50,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578909983] [2024-11-28 04:25:50,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:51,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-28 04:25:51,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578909983] [2024-11-28 04:25:51,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578909983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:51,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593850901] [2024-11-28 04:25:51,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:51,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:51,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:51,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:51,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:25:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:51,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:25:51,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:51,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:25:51,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593850901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:25:51,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:25:51,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-28 04:25:51,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186005810] [2024-11-28 04:25:51,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:25:51,381 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-28 04:25:51,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-28 04:25:51,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:25:51,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:25:51,382 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. cyclomatic complexity: 2 Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:51,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:51,461 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2024-11-28 04:25:51,462 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 25 transitions. [2024-11-28 04:25:51,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2024-11-28 04:25:51,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 25 transitions. [2024-11-28 04:25:51,463 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2024-11-28 04:25:51,463 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2024-11-28 04:25:51,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 25 transitions. [2024-11-28 04:25:51,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 04:25:51,464 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-28 04:25:51,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 25 transitions. [2024-11-28 04:25:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-28 04:25:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-28 04:25:51,469 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-28 04:25:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:25:51,472 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-28 04:25:51,472 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-28 04:25:51,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 25 transitions. [2024-11-28 04:25:51,473 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2024-11-28 04:25:51,473 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 04:25:51,473 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 04:25:51,473 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-28 04:25:51,474 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [9, 9, 1, 1, 1, 1] [2024-11-28 04:25:51,474 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#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;" [2024-11-28 04:25:51,474 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x1~0#1 <= 10;" "main_~x2~0#1 := 10;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" [2024-11-28 04:25:51,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:51,474 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-11-28 04:25:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:51,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428708561] [2024-11-28 04:25:51,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:51,483 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:51,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:51,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:51,489 INFO L85 PathProgramCache]: Analyzing trace with hash -47752657, now seen corresponding path program 3 times [2024-11-28 04:25:51,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:51,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779459705] [2024-11-28 04:25:51,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:51,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:51,514 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:51,543 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:51,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:51,544 INFO L85 PathProgramCache]: Analyzing trace with hash -880197519, now seen corresponding path program 1 times [2024-11-28 04:25:51,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:51,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55179195] [2024-11-28 04:25:51,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:51,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:51,577 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:51,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:51,777 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 04:25:51,777 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 04:25:51,778 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 04:25:51,778 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 04:25:51,778 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-28 04:25:51,778 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:51,778 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 04:25:51,778 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 04:25:51,779 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration4_Loop [2024-11-28 04:25:51,779 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 04:25:51,779 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 04:25:51,795 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:51,812 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:51,816 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:51,821 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:51,880 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 04:25:51,880 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-28 04:25:51,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:51,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:51,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:51,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-28 04:25:51,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 04:25:51,891 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 04:25:51,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-28 04:25:51,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:51,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:51,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:51,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-28 04:25:51,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-28 04:25:51,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 04:25:51,966 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-28 04:25:51,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:51,969 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 04:25:51,969 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 04:25:51,969 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 04:25:51,969 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 04:25:51,969 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-28 04:25:51,969 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:51,969 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 04:25:51,970 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 04:25:51,970 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration4_Loop [2024-11-28 04:25:51,970 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 04:25:51,970 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 04:25:51,971 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:51,979 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:51,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:51,991 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:52,048 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 04:25:52,055 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-28 04:25:52,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:52,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:52,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:52,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-28 04:25:52,064 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 [2024-11-28 04:25:52,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 04:25:52,086 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 04:25:52,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 04:25:52,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 04:25:52,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 04:25:52,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 04:25:52,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 04:25:52,100 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-28 04:25:52,106 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-28 04:25:52,113 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-28 04:25:52,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:52,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:52,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:52,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-28 04:25:52,130 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-28 04:25:52,130 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-28 04:25:52,131 INFO L474 LassoAnalysis]: Proved termination. [2024-11-28 04:25:52,132 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 [] [2024-11-28 04:25:52,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:52,148 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-28 04:25:52,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:52,188 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:25:52,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:52,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:25:52,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:52,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-28 04:25:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:25:52,458 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 [2024-11-28 04:25:52,460 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 25 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2024-11-28 04:25:52,512 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 25 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 46 states and 49 transitions. Complement of second has 4 states. [2024-11-28 04:25:52,514 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 [2024-11-28 04:25:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2024-11-28 04:25:52,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2024-11-28 04:25:52,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 22 letters. [2024-11-28 04:25:52,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 04:25:52,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 24 letters. Loop has 22 letters. [2024-11-28 04:25:52,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 04:25:52,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 44 letters. [2024-11-28 04:25:52,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 04:25:52,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 49 transitions. [2024-11-28 04:25:52,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 04:25:52,534 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 45 states and 48 transitions. [2024-11-28 04:25:52,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2024-11-28 04:25:52,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2024-11-28 04:25:52,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 48 transitions. [2024-11-28 04:25:52,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-28 04:25:52,534 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 48 transitions. [2024-11-28 04:25:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 48 transitions. [2024-11-28 04:25:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2024-11-28 04:25:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-28 04:25:52,540 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-28 04:25:52,540 INFO L425 stractBuchiCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-28 04:25:52,542 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-28 04:25:52,542 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 31 transitions. [2024-11-28 04:25:52,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 04:25:52,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 04:25:52,543 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 04:25:52,543 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-28 04:25:52,543 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 04:25:52,544 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#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;" "assume main_~x1~0#1 <= 10;" "main_~x2~0#1 := 10;" [2024-11-28 04:25:52,544 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" [2024-11-28 04:25:52,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:52,544 INFO L85 PathProgramCache]: Analyzing trace with hash 925703, now seen corresponding path program 1 times [2024-11-28 04:25:52,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:52,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336995507] [2024-11-28 04:25:52,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:52,554 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:52,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:52,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1541, now seen corresponding path program 1 times [2024-11-28 04:25:52,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:52,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105225216] [2024-11-28 04:25:52,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:52,569 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:52,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:52,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:52,576 INFO L85 PathProgramCache]: Analyzing trace with hash 889601163, now seen corresponding path program 1 times [2024-11-28 04:25:52,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:52,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097966545] [2024-11-28 04:25:52,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:52,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:52,586 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:52,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:52,614 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 04:25:52,614 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 04:25:52,614 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 04:25:52,614 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 04:25:52,614 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-28 04:25:52,614 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:52,614 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 04:25:52,614 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 04:25:52,615 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration5_Loop [2024-11-28 04:25:52,615 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 04:25:52,615 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 04:25:52,616 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:52,620 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:52,625 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:52,683 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 04:25:52,683 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-28 04:25:52,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:52,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:52,686 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:52,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-28 04:25:52,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 04:25:52,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 04:25:52,723 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-28 04:25:52,723 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: [] [2024-11-28 04:25:52,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-28 04:25:52,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:52,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:52,739 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:52,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 04:25:52,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 04:25:52,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-28 04:25:52,776 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-28 04:25:52,776 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: [] [2024-11-28 04:25:52,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:52,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:52,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:52,790 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:52,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-28 04:25:52,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 04:25:52,795 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 04:25:52,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-28 04:25:52,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:52,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:52,829 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:52,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-28 04:25:52,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-28 04:25:52,834 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 04:25:52,873 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-28 04:25:52,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:52,878 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 04:25:52,878 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 04:25:52,878 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 04:25:52,878 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 04:25:52,878 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-28 04:25:52,878 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:52,879 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 04:25:52,879 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 04:25:52,879 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration5_Loop [2024-11-28 04:25:52,879 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 04:25:52,879 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 04:25:52,880 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:52,886 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:52,890 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:52,939 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 04:25:52,939 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-28 04:25:52,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:52,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:52,942 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:52,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-28 04:25:52,947 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 [2024-11-28 04:25:52,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 04:25:52,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 04:25:52,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 04:25:52,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 04:25:52,969 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-28 04:25:52,969 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-28 04:25:52,976 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 04:25:52,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-28 04:25:52,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:52,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:52,990 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:52,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-28 04:25:52,995 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 [2024-11-28 04:25:53,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 04:25:53,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 04:25:53,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 04:25:53,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 04:25:53,017 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-28 04:25:53,017 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-28 04:25:53,029 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-28 04:25:53,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-28 04:25:53,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:53,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:53,043 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:53,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-28 04:25:53,047 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 [2024-11-28 04:25:53,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 04:25:53,065 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 04:25:53,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 04:25:53,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 04:25:53,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 04:25:53,067 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 04:25:53,068 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 04:25:53,072 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-28 04:25:53,080 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-28 04:25:53,081 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-28 04:25:53,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:53,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:53,085 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:53,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-28 04:25:53,090 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-28 04:25:53,090 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-28 04:25:53,090 INFO L474 LassoAnalysis]: Proved termination. [2024-11-28 04:25:53,090 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 [] [2024-11-28 04:25:53,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:53,102 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-28 04:25:53,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:53,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:25:53,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:53,137 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:25:53,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:53,159 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 [2024-11-28 04:25:53,159 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 31 transitions. cyclomatic complexity: 5 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) [2024-11-28 04:25:53,187 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 31 transitions. cyclomatic complexity: 5. 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 62 states and 68 transitions. Complement of second has 5 states. [2024-11-28 04:25:53,194 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 [2024-11-28 04:25:53,195 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) [2024-11-28 04:25:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-28 04:25:53,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-28 04:25:53,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 04:25:53,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2024-11-28 04:25:53,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 04:25:53,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 4 letters. [2024-11-28 04:25:53,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 04:25:53,196 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 68 transitions. [2024-11-28 04:25:53,198 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 04:25:53,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 48 states and 51 transitions. [2024-11-28 04:25:53,198 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-28 04:25:53,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-28 04:25:53,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 51 transitions. [2024-11-28 04:25:53,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-28 04:25:53,199 INFO L218 hiAutomatonCegarLoop]: Abstraction has 48 states and 51 transitions. [2024-11-28 04:25:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 51 transitions. [2024-11-28 04:25:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 28. [2024-11-28 04:25:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-11-28 04:25:53,206 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-28 04:25:53,206 INFO L425 stractBuchiCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-28 04:25:53,206 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-28 04:25:53,206 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 30 transitions. [2024-11-28 04:25:53,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 04:25:53,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 04:25:53,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 04:25:53,211 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 9, 2, 2, 1, 1, 1, 1] [2024-11-28 04:25:53,211 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 04:25:53,211 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#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;" "assume main_~x1~0#1 <= 10;" "main_~x2~0#1 := 10;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" "assume main_~x1~0#1 <= 10;" "main_~x2~0#1 := 10;" [2024-11-28 04:25:53,211 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x2~0#1 > 1;" "main_~x2~0#1 := main_~x2~0#1 - 1;" [2024-11-28 04:25:53,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:53,212 INFO L85 PathProgramCache]: Analyzing trace with hash 238741813, now seen corresponding path program 2 times [2024-11-28 04:25:53,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:53,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330901783] [2024-11-28 04:25:53,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:53,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:53,238 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:53,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:53,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:53,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1541, now seen corresponding path program 2 times [2024-11-28 04:25:53,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:53,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450448746] [2024-11-28 04:25:53,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:53,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:53,267 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:53,274 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:53,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:53,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1797616185, now seen corresponding path program 3 times [2024-11-28 04:25:53,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 04:25:53,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137692711] [2024-11-28 04:25:53,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:53,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:53,292 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:25:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:25:53,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 04:25:53,346 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 04:25:53,346 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 04:25:53,347 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 04:25:53,347 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 04:25:53,347 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-28 04:25:53,347 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:53,347 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 04:25:53,347 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 04:25:53,347 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration6_Loop [2024-11-28 04:25:53,347 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 04:25:53,347 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 04:25:53,348 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:53,357 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:53,364 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:53,408 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 04:25:53,408 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-28 04:25:53,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:53,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:53,411 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:53,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-28 04:25:53,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-28 04:25:53,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 04:25:53,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-28 04:25:53,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:53,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:53,448 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:53,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-28 04:25:53,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-28 04:25:53,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-28 04:25:53,496 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-28 04:25:53,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:53,501 INFO L204 LassoAnalysis]: Preferences: [2024-11-28 04:25:53,501 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-28 04:25:53,501 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-28 04:25:53,501 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-28 04:25:53,501 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-28 04:25:53,501 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:53,501 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-28 04:25:53,501 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-28 04:25:53,501 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration6_Loop [2024-11-28 04:25:53,501 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-28 04:25:53,501 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-28 04:25:53,502 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:53,515 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:53,520 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-28 04:25:53,575 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-28 04:25:53,577 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-28 04:25:53,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:53,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:53,579 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:53,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-28 04:25:53,584 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 [2024-11-28 04:25:53,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-28 04:25:53,600 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-28 04:25:53,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-28 04:25:53,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-28 04:25:53,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-28 04:25:53,602 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-28 04:25:53,602 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-28 04:25:53,605 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-28 04:25:53,609 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-28 04:25:53,609 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-28 04:25:53,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 04:25:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:53,614 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:53,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-28 04:25:53,618 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-28 04:25:53,618 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-28 04:25:53,618 INFO L474 LassoAnalysis]: Proved termination. [2024-11-28 04:25:53,618 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 [] [2024-11-28 04:25:53,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-28 04:25:53,630 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-28 04:25:53,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:53,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:25:53,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:53,745 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:25:53,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:53,769 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 [2024-11-28 04:25:53,770 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 30 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:53,795 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 30 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 57 states and 61 transitions. Complement of second has 5 states. [2024-11-28 04:25:53,796 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 [2024-11-28 04:25:53,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-28 04:25:53,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 26 letters. Loop has 2 letters. [2024-11-28 04:25:53,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 04:25:53,800 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-28 04:25:53,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:53,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:25:53,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:53,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-28 04:25:53,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-28 04:25:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:53,910 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:25:53,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:53,929 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-28 04:25:53,929 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 30 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:53,949 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 30 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 57 states and 61 transitions. Complement of second has 5 states. [2024-11-28 04:25:53,949 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 [2024-11-28 04:25:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-28 04:25:53,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 26 letters. Loop has 2 letters. [2024-11-28 04:25:53,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 04:25:53,951 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-28 04:25:53,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:53,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:25:53,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:54,023 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:25:54,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:54,039 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 2 loop predicates [2024-11-28 04:25:54,039 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 30 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:54,060 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 30 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 39 states and 43 transitions. Complement of second has 4 states. [2024-11-28 04:25:54,060 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 [2024-11-28 04:25:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:25:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2024-11-28 04:25:54,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 26 letters. Loop has 2 letters. [2024-11-28 04:25:54,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 04:25:54,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 28 letters. Loop has 2 letters. [2024-11-28 04:25:54,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 04:25:54,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 26 letters. Loop has 4 letters. [2024-11-28 04:25:54,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-28 04:25:54,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 43 transitions. [2024-11-28 04:25:54,063 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-28 04:25:54,063 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 0 states and 0 transitions. [2024-11-28 04:25:54,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-28 04:25:54,063 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-28 04:25:54,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-28 04:25:54,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-28 04:25:54,064 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:25:54,064 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:25:54,064 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:25:54,064 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-28 04:25:54,064 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:25:54,064 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-28 04:25:54,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-28 04:25:54,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 04:25:54 BoogieIcfgContainer [2024-11-28 04:25:54,073 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-28 04:25:54,073 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:25:54,074 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:25:54,074 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:25:54,074 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:25:49" (3/4) ... [2024-11-28 04:25:54,077 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 04:25:54,078 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:25:54,078 INFO L158 Benchmark]: Toolchain (without parser) took 4894.86ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 68.9MB in the end (delta: 15.1MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2024-11-28 04:25:54,079 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 83.9MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:25:54,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.26ms. Allocated memory is still 109.1MB. Free memory was 83.7MB in the beginning and 74.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:25:54,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.06ms. Allocated memory is still 109.1MB. Free memory was 74.1MB in the beginning and 73.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:25:54,080 INFO L158 Benchmark]: Boogie Preprocessor took 25.66ms. Allocated memory is still 109.1MB. Free memory was 73.0MB in the beginning and 72.1MB in the end (delta: 883.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:25:54,080 INFO L158 Benchmark]: RCFGBuilder took 283.94ms. Allocated memory is still 109.1MB. Free memory was 72.1MB in the beginning and 64.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:25:54,080 INFO L158 Benchmark]: BuchiAutomizer took 4301.56ms. Allocated memory is still 109.1MB. Free memory was 64.0MB in the beginning and 69.7MB in the end (delta: -5.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:25:54,080 INFO L158 Benchmark]: Witness Printer took 4.24ms. Allocated memory is still 109.1MB. Free memory was 69.7MB in the beginning and 68.9MB in the end (delta: 761.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:25:54,082 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 83.9MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.26ms. Allocated memory is still 109.1MB. Free memory was 83.7MB in the beginning and 74.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.06ms. Allocated memory is still 109.1MB. Free memory was 74.1MB in the beginning and 73.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.66ms. Allocated memory is still 109.1MB. Free memory was 73.0MB in the beginning and 72.1MB in the end (delta: 883.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 283.94ms. Allocated memory is still 109.1MB. Free memory was 72.1MB in the beginning and 64.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4301.56ms. Allocated memory is still 109.1MB. Free memory was 64.0MB in the beginning and 69.7MB in the end (delta: -5.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.24ms. Allocated memory is still 109.1MB. Free memory was 69.7MB in the beginning and 68.9MB in the end (delta: 761.5kB). 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 3 locations. One nondeterministic module has affine ranking function x2 and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 7 iterations. TraceHistogramMax:9. Analysis of lassos took 2.9s. Construction of modules took 0.1s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 37 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: 81/81 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 48 mSDtfsCounter, 83 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: 36ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-28 04:25:54,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:25:54,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:54,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:54,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82f722e-ac98-4cd7-8a11-1875e7cbdef4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE