./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX --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 0f57a241e2c58801cabb7fcf6419a1ee8415c4d2687e9efe6a7f86e17b88f5ca --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:56:49,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:56:49,523 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-08 16:56:49,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:56:49,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:56:49,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:56:49,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:56:49,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:56:49,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:56:49,577 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:56:49,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:56:49,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:56:49,581 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:56:49,581 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-08 16:56:49,581 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-08 16:56:49,582 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-08 16:56:49,582 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-08 16:56:49,583 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-08 16:56:49,583 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-08 16:56:49,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:56:49,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-08 16:56:49,589 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:56:49,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:56:49,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-08 16:56:49,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-08 16:56:49,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-08 16:56:49,590 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:56:49,591 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:56:49,591 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:56:49,592 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-08 16:56:49,592 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:56:49,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:56:49,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:56:49,595 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:56:49,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:56:49,596 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-08 16:56:49,597 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f57a241e2c58801cabb7fcf6419a1ee8415c4d2687e9efe6a7f86e17b88f5ca [2024-11-08 16:56:49,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:56:49,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:56:49,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:56:49,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:56:49,954 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:56:49,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c Unable to find full path for "g++" [2024-11-08 16:56:52,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:56:52,669 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:56:52,669 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2024-11-08 16:56:52,687 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/data/dff604b22/4b4765ce1dea47fa892abd4094e6bbf6/FLAG88e133708 [2024-11-08 16:56:52,714 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/data/dff604b22/4b4765ce1dea47fa892abd4094e6bbf6 [2024-11-08 16:56:52,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:56:52,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:56:52,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:56:52,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:56:52,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:56:52,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:56:52" (1/1) ... [2024-11-08 16:56:52,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e66852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:52, skipping insertion in model container [2024-11-08 16:56:52,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:56:52" (1/1) ... [2024-11-08 16:56:52,779 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:56:53,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:56:53,055 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:56:53,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:56:53,085 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:56:53,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53 WrapperNode [2024-11-08 16:56:53,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:56:53,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:56:53,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:56:53,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:56:53,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,124 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-11-08 16:56:53,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:56:53,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:56:53,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:56:53,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:56:53,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,143 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,149 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-08 16:56:53,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:56:53,170 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:56:53,171 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:56:53,171 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:56:53,172 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (1/1) ... [2024-11-08 16:56:53,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:53,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:53,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:53,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-08 16:56:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:56:53,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:56:53,333 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:56:53,335 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:56:53,445 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-08 16:56:53,445 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:56:53,460 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:56:53,461 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:56:53,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:56:53 BoogieIcfgContainer [2024-11-08 16:56:53,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:56:53,463 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-08 16:56:53,463 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-08 16:56:53,469 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-08 16:56:53,470 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-08 16:56:53,470 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.11 04:56:52" (1/3) ... [2024-11-08 16:56:53,472 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cfbf317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.11 04:56:53, skipping insertion in model container [2024-11-08 16:56:53,472 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-08 16:56:53,472 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:56:53" (2/3) ... [2024-11-08 16:56:53,473 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cfbf317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.11 04:56:53, skipping insertion in model container [2024-11-08 16:56:53,473 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-08 16:56:53,473 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:56:53" (3/3) ... [2024-11-08 16:56:53,475 INFO L332 chiAutomizerObserver]: Analyzing ICFG KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2024-11-08 16:56:53,553 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-08 16:56:53,553 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-08 16:56:53,553 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-08 16:56:53,553 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-08 16:56:53,554 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-08 16:56:53,554 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-08 16:56:53,554 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-08 16:56:53,554 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-08 16:56:53,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:53,588 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-08 16:56:53,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 16:56:53,589 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 16:56:53,594 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-08 16:56:53,595 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-08 16:56:53,595 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-08 16:56:53,595 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:53,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-08 16:56:53,597 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 16:56:53,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 16:56:53,598 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-08 16:56:53,598 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-08 16:56:53,605 INFO L745 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 8#L23-1true [2024-11-08 16:56:53,606 INFO L747 eck$LassoCheckResult]: Loop: 8#L23-1true assume main_~x~0#1 < 255; 10#L17-1true assume !!(main_~x~0#1 < 255); 3#L18true assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 5#L18-2true assume 0 != main_~debug~0#1;main_~x~0#1 := 0; 8#L23-1true [2024-11-08 16:56:53,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:53,614 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-08 16:56:53,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:53,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229229661] [2024-11-08 16:56:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:53,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:53,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:56:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:53,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:56:53,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1113354, now seen corresponding path program 1 times [2024-11-08 16:56:53,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:53,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526447504] [2024-11-08 16:56:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:53,785 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:56:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:53,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:56:53,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash 889540556, now seen corresponding path program 1 times [2024-11-08 16:56:53,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:53,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120724624] [2024-11-08 16:56:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:53,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:53,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:53,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120724624] [2024-11-08 16:56:53,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120724624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:53,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:56:53,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:56:53,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697977885] [2024-11-08 16:56:53,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:54,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:54,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:56:54,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:56:54,095 INFO L87 Difference]: Start difference. First operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) 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) [2024-11-08 16:56:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:54,111 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2024-11-08 16:56:54,113 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2024-11-08 16:56:54,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-08 16:56:54,124 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 6 states and 7 transitions. [2024-11-08 16:56:54,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-08 16:56:54,127 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-08 16:56:54,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2024-11-08 16:56:54,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-08 16:56:54,129 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2024-11-08 16:56:54,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2024-11-08 16:56:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2024-11-08 16:56:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2024-11-08 16:56:54,163 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2024-11-08 16:56:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:56:54,170 INFO L425 stractBuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2024-11-08 16:56:54,170 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-08 16:56:54,171 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2024-11-08 16:56:54,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-08 16:56:54,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 16:56:54,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 16:56:54,172 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-08 16:56:54,172 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-08 16:56:54,173 INFO L745 eck$LassoCheckResult]: Stem: 34#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 35#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 33#L23-1 [2024-11-08 16:56:54,173 INFO L747 eck$LassoCheckResult]: Loop: 33#L23-1 assume main_~x~0#1 < 255; 36#L17-1 assume !!(main_~x~0#1 < 255); 31#L18 assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 32#L18-2 assume !(0 != main_~debug~0#1); 33#L23-1 [2024-11-08 16:56:54,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:54,174 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-08 16:56:54,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:54,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477641787] [2024-11-08 16:56:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:54,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:54,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:56:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:54,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:56:54,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:54,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1113356, now seen corresponding path program 1 times [2024-11-08 16:56:54,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:54,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813590532] [2024-11-08 16:56:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:54,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:54,199 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:56:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:54,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:56:54,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:54,212 INFO L85 PathProgramCache]: Analyzing trace with hash 889540558, now seen corresponding path program 1 times [2024-11-08 16:56:54,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:54,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679817944] [2024-11-08 16:56:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:54,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:54,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:56:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:54,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:56:54,308 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 16:56:54,309 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 16:56:54,309 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 16:56:54,309 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 16:56:54,309 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-08 16:56:54,310 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:54,310 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 16:56:54,310 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 16:56:54,310 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration2_Loop [2024-11-08 16:56:54,310 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 16:56:54,311 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 16:56:54,331 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:54,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:54,494 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 16:56:54,495 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-08 16:56:54,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:54,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:54,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:54,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-08 16:56:54,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 16:56:54,509 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 16:56:54,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-08 16:56:54,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:54,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:54,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:54,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-08 16:56:54,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-08 16:56:54,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 16:56:54,636 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-08 16:56:54,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-08 16:56:54,642 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 16:56:54,642 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 16:56:54,642 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 16:56:54,643 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 16:56:54,643 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-08 16:56:54,643 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:54,643 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 16:56:54,643 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 16:56:54,643 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration2_Loop [2024-11-08 16:56:54,644 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 16:56:54,644 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 16:56:54,647 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:54,667 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:54,807 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 16:56:54,813 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-08 16:56:54,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:54,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:54,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:54,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-08 16:56:54,824 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 [2024-11-08 16:56:54,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 16:56:54,844 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 16:56:54,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 16:56:54,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 16:56:54,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 16:56:54,850 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 16:56:54,851 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 16:56:54,856 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-08 16:56:54,863 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-08 16:56:54,864 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-08 16:56:54,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:54,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:54,870 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:54,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-08 16:56:54,873 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-08 16:56:54,874 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-08 16:56:54,874 INFO L474 LassoAnalysis]: Proved termination. [2024-11-08 16:56:54,875 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2024-11-08 16:56:54,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-08 16:56:54,906 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-08 16:56:54,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:54,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:56:54,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:54,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:56:54,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:55,108 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-08 16:56:55,111 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 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) [2024-11-08 16:56:55,183 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. 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) Result 15 states and 18 transitions. Complement of second has 7 states. [2024-11-08 16:56:55,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-08 16:56:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2024-11-08 16:56:55,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2024-11-08 16:56:55,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-08 16:56:55,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 16:56:55,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2024-11-08 16:56:55,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 16:56:55,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 8 letters. [2024-11-08 16:56:55,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 16:56:55,194 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2024-11-08 16:56:55,196 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-08 16:56:55,197 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2024-11-08 16:56:55,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-11-08 16:56:55,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-08 16:56:55,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2024-11-08 16:56:55,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 16:56:55,200 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-11-08 16:56:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2024-11-08 16:56:55,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-11-08 16:56:55,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 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) [2024-11-08 16:56:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2024-11-08 16:56:55,230 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 17 transitions. [2024-11-08 16:56:55,230 INFO L425 stractBuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2024-11-08 16:56:55,230 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-08 16:56:55,230 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2024-11-08 16:56:55,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-08 16:56:55,231 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 16:56:55,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 16:56:55,232 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-08 16:56:55,232 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-08 16:56:55,232 INFO L745 eck$LassoCheckResult]: Stem: 101#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 102#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 103#L23-1 assume main_~x~0#1 < 255; 104#L17-1 assume !!(main_~x~0#1 < 255); 94#L18 assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1; 95#L18-2 [2024-11-08 16:56:55,232 INFO L747 eck$LassoCheckResult]: Loop: 95#L18-2 assume !(0 != main_~debug~0#1); 98#L23-1 assume main_~x~0#1 < 255; 106#L17-1 assume !!(main_~x~0#1 < 255); 107#L18 assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 95#L18-2 [2024-11-08 16:56:55,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:55,233 INFO L85 PathProgramCache]: Analyzing trace with hash 28694854, now seen corresponding path program 1 times [2024-11-08 16:56:55,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:55,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419938201] [2024-11-08 16:56:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:55,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:55,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:56:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:55,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:56:55,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1585046, now seen corresponding path program 2 times [2024-11-08 16:56:55,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:55,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098009346] [2024-11-08 16:56:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:55,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:55,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-08 16:56:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:55,299 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:56:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:55,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:56:55,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash 352706139, now seen corresponding path program 1 times [2024-11-08 16:56:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:55,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798611817] [2024-11-08 16:56:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:55,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:55,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:56:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:55,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:56:55,455 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 16:56:55,455 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 16:56:55,455 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 16:56:55,455 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 16:56:55,456 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-08 16:56:55,456 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:55,456 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 16:56:55,456 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 16:56:55,456 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration3_Loop [2024-11-08 16:56:55,456 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 16:56:55,456 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 16:56:55,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:55,467 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:55,587 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 16:56:55,588 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-08 16:56:55,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:55,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:55,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:55,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-08 16:56:55,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 16:56:55,596 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 16:56:55,618 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-08 16:56:55,618 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~debug~0#1=0} Honda state: {ULTIMATE.start_main_~debug~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-08 16:56:55,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-08 16:56:55,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:55,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:55,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:55,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-08 16:56:55,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 16:56:55,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 16:56:55,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-08 16:56:55,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:55,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:55,700 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:55,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-08 16:56:55,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-08 16:56:55,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 16:56:55,765 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-08 16:56:55,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-08 16:56:55,772 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 16:56:55,772 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 16:56:55,772 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 16:56:55,772 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 16:56:55,772 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-08 16:56:55,772 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:55,772 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 16:56:55,773 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 16:56:55,773 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration3_Loop [2024-11-08 16:56:55,773 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 16:56:55,773 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 16:56:55,774 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:55,780 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:55,890 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 16:56:55,890 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-08 16:56:55,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:55,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:55,892 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:55,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-08 16:56:55,896 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 [2024-11-08 16:56:55,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 16:56:55,914 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 16:56:55,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 16:56:55,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 16:56:55,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 16:56:55,916 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 16:56:55,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 16:56:55,920 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-08 16:56:55,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-11-08 16:56:55,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:55,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:55,948 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:55,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-08 16:56:55,953 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 [2024-11-08 16:56:55,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 16:56:55,971 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 16:56:55,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 16:56:55,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 16:56:55,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 16:56:55,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 16:56:55,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 16:56:55,980 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-08 16:56:55,984 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-08 16:56:55,984 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-08 16:56:55,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:55,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:55,988 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:55,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-08 16:56:55,993 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-08 16:56:55,994 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-08 16:56:55,994 INFO L474 LassoAnalysis]: Proved termination. [2024-11-08 16:56:55,994 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2024-11-08 16:56:56,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-08 16:56:56,020 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-08 16:56:56,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:56,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:56:56,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:56,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:56:56,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:56,124 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 [2024-11-08 16:56:56,124 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-08 16:56:56,157 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 22 states and 27 transitions. Complement of second has 7 states. [2024-11-08 16:56:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-08 16:56:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-08 16:56:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2024-11-08 16:56:56,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 4 letters. [2024-11-08 16:56:56,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 16:56:56,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 4 letters. [2024-11-08 16:56:56,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 16:56:56,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 8 letters. [2024-11-08 16:56:56,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 16:56:56,161 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2024-11-08 16:56:56,163 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-08 16:56:56,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 27 transitions. [2024-11-08 16:56:56,164 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-11-08 16:56:56,164 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-11-08 16:56:56,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 27 transitions. [2024-11-08 16:56:56,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 16:56:56,164 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-08 16:56:56,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 27 transitions. [2024-11-08 16:56:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-08 16:56:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 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) [2024-11-08 16:56:56,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-08 16:56:56,167 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-08 16:56:56,167 INFO L425 stractBuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-08 16:56:56,167 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-08 16:56:56,168 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2024-11-08 16:56:56,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-08 16:56:56,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 16:56:56,169 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 16:56:56,169 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2024-11-08 16:56:56,169 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-08 16:56:56,170 INFO L745 eck$LassoCheckResult]: Stem: 187#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 188#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 191#L23-1 assume main_~x~0#1 < 255; 192#L17-1 assume !!(main_~x~0#1 < 255); 197#L18 assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1; 184#L18-2 assume !(0 != main_~debug~0#1); 186#L23-1 assume main_~x~0#1 < 255; 189#L17-1 assume !!(main_~x~0#1 < 255); 180#L18 assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1; 181#L18-2 [2024-11-08 16:56:56,170 INFO L747 eck$LassoCheckResult]: Loop: 181#L18-2 assume !(0 != main_~debug~0#1); 196#L23-1 assume main_~x~0#1 < 255; 195#L17-1 assume !!(main_~x~0#1 < 255); 194#L18 assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 181#L18-2 [2024-11-08 16:56:56,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:56,170 INFO L85 PathProgramCache]: Analyzing trace with hash 352706137, now seen corresponding path program 1 times [2024-11-08 16:56:56,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:56,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50645310] [2024-11-08 16:56:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:56,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:56,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:56,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50645310] [2024-11-08 16:56:56,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50645310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:56:56,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:56:56,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:56:56,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061372795] [2024-11-08 16:56:56,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:56:56,424 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-08 16:56:56,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:56,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1585046, now seen corresponding path program 3 times [2024-11-08 16:56:56,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:56,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867021015] [2024-11-08 16:56:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:56,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:56,439 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:56:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:56:56,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:56:56,500 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 16:56:56,501 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 16:56:56,501 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 16:56:56,501 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 16:56:56,501 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-08 16:56:56,501 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:56,501 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 16:56:56,501 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 16:56:56,501 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration4_Loop [2024-11-08 16:56:56,501 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 16:56:56,502 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 16:56:56,503 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:56,507 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:56,627 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 16:56:56,627 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-08 16:56:56,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:56,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:56,629 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:56,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-08 16:56:56,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 16:56:56,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 16:56:56,653 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-08 16:56:56,653 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~debug~0#1=0} Honda state: {ULTIMATE.start_main_~debug~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-08 16:56:56,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-08 16:56:56,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:56,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:56,672 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:56,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-08 16:56:56,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 16:56:56,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 16:56:56,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-08 16:56:56,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:56,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:56,710 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:56,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-08 16:56:56,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-08 16:56:56,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 16:56:56,767 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-08 16:56:56,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-08 16:56:56,774 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 16:56:56,774 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 16:56:56,774 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 16:56:56,774 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 16:56:56,774 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-08 16:56:56,774 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:56,774 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 16:56:56,774 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 16:56:56,774 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration4_Loop [2024-11-08 16:56:56,775 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 16:56:56,775 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 16:56:56,776 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:56,782 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 16:56:56,891 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 16:56:56,892 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-08 16:56:56,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:56,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:56,894 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:56,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-08 16:56:56,899 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 [2024-11-08 16:56:56,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 16:56:56,917 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 16:56:56,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 16:56:56,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 16:56:56,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 16:56:56,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 16:56:56,918 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 16:56:56,921 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-08 16:56:56,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-08 16:56:56,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:56,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:56,948 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:56,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-08 16:56:56,953 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 [2024-11-08 16:56:56,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 16:56:56,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 16:56:56,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 16:56:56,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 16:56:56,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 16:56:56,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 16:56:56,971 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 16:56:56,978 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-08 16:56:56,982 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-08 16:56:56,983 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-08 16:56:56,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 16:56:56,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:56,986 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 16:56:56,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-08 16:56:56,991 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-08 16:56:56,991 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-08 16:56:56,991 INFO L474 LassoAnalysis]: Proved termination. [2024-11-08 16:56:56,991 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2024-11-08 16:56:57,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-08 16:56:57,016 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-08 16:56:57,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:57,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:56:57,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:57,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:56:57,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:57,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:57,102 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 [2024-11-08 16:56:57,102 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-08 16:56:57,133 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 28 states and 35 transitions. Complement of second has 7 states. [2024-11-08 16:56:57,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-08 16:56:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-08 16:56:57,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2024-11-08 16:56:57,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 4 letters. [2024-11-08 16:56:57,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 16:56:57,136 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-08 16:56:57,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:57,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:56:57,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:57,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:56:57,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:57,226 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 [2024-11-08 16:56:57,226 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-08 16:56:57,267 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 28 states and 35 transitions. Complement of second has 7 states. [2024-11-08 16:56:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-08 16:56:57,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-08 16:56:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2024-11-08 16:56:57,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 4 letters. [2024-11-08 16:56:57,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 16:56:57,272 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-08 16:56:57,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:57,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:56:57,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:57,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:56:57,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:57,391 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 [2024-11-08 16:56:57,393 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-08 16:56:57,433 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 32 states and 40 transitions. Complement of second has 6 states. [2024-11-08 16:56:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-08 16:56:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-08 16:56:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2024-11-08 16:56:57,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 4 letters. [2024-11-08 16:56:57,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 16:56:57,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 4 letters. [2024-11-08 16:56:57,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 16:56:57,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 8 letters. [2024-11-08 16:56:57,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 16:56:57,441 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2024-11-08 16:56:57,445 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2024-11-08 16:56:57,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 32 transitions. [2024-11-08 16:56:57,448 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-11-08 16:56:57,448 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-11-08 16:56:57,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 32 transitions. [2024-11-08 16:56:57,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 16:56:57,450 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-08 16:56:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 32 transitions. [2024-11-08 16:56:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 11. [2024-11-08 16:56:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) 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) [2024-11-08 16:56:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-11-08 16:56:57,454 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-08 16:56:57,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:57,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:56:57,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:56:57,455 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-08 16:56:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:56:57,482 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2024-11-08 16:56:57,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2024-11-08 16:56:57,483 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-08 16:56:57,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2024-11-08 16:56:57,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-08 16:56:57,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-08 16:56:57,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-08 16:56:57,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-08 16:56:57,484 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 16:56:57,484 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 16:56:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:56:57,486 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 16:56:57,486 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-08 16:56:57,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-08 16:56:57,487 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-08 16:56:57,487 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-08 16:56:57,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.11 04:56:57 BoogieIcfgContainer [2024-11-08 16:56:57,495 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-08 16:56:57,496 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:56:57,496 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:56:57,497 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:56:57,497 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:56:53" (3/4) ... [2024-11-08 16:56:57,501 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 16:56:57,502 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:56:57,503 INFO L158 Benchmark]: Toolchain (without parser) took 4780.70ms. Allocated memory is still 178.3MB. Free memory was 140.0MB in the beginning and 57.4MB in the end (delta: 82.5MB). Peak memory consumption was 85.7MB. Max. memory is 16.1GB. [2024-11-08 16:56:57,503 INFO L158 Benchmark]: CDTParser took 1.13ms. Allocated memory is still 130.0MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:56:57,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.96ms. Allocated memory is still 178.3MB. Free memory was 139.2MB in the beginning and 128.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-08 16:56:57,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.31ms. Allocated memory is still 178.3MB. Free memory was 128.0MB in the beginning and 126.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:56:57,505 INFO L158 Benchmark]: Boogie Preprocessor took 43.31ms. Allocated memory is still 178.3MB. Free memory was 126.6MB in the beginning and 125.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:56:57,506 INFO L158 Benchmark]: RCFGBuilder took 291.32ms. Allocated memory is still 178.3MB. Free memory was 125.3MB in the beginning and 116.2MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-08 16:56:57,506 INFO L158 Benchmark]: BuchiAutomizer took 4032.37ms. Allocated memory is still 178.3MB. Free memory was 116.2MB in the beginning and 57.4MB in the end (delta: 58.7MB). Peak memory consumption was 60.5MB. Max. memory is 16.1GB. [2024-11-08 16:56:57,507 INFO L158 Benchmark]: Witness Printer took 6.19ms. Allocated memory is still 178.3MB. Free memory is still 57.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:56:57,510 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13ms. Allocated memory is still 130.0MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 360.96ms. Allocated memory is still 178.3MB. Free memory was 139.2MB in the beginning and 128.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.31ms. Allocated memory is still 178.3MB. Free memory was 128.0MB in the beginning and 126.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.31ms. Allocated memory is still 178.3MB. Free memory was 126.6MB in the beginning and 125.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 291.32ms. Allocated memory is still 178.3MB. Free memory was 125.3MB in the beginning and 116.2MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 4032.37ms. Allocated memory is still 178.3MB. Free memory was 116.2MB in the beginning and 57.4MB in the end (delta: 58.7MB). Peak memory consumption was 60.5MB. Max. memory is 16.1GB. * Witness Printer took 6.19ms. Allocated memory is still 178.3MB. Free memory is still 57.4MB. 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (255 + ((long) -1 * x)) and consists of 4 locations. One deterministic module has affine ranking function (255 + ((long) -1 * x)) and consists of 4 locations. One nondeterministic module has affine ranking function (255 + ((long) -1 * x)) and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 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: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 54 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 53 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp83 ukn100 mio100 lsp100 div346 bol100 ite100 ukn100 eq150 hnf94 smp47 dnf100 smp100 tf105 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 60ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-08 16:56:57,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-11-08 16:56:57,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-08 16:56:57,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4fe33-db85-4b1e-8382-7c72c99b9489/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE