./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8393723b 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_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --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 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:48:19,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:48:19,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:48:19,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:48:19,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:48:19,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:48:19,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:48:19,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:48:19,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:48:19,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:48:19,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:48:19,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:48:19,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:48:19,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:48:19,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:48:19,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:48:19,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:48:19,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:48:19,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:48:19,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:48:19,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:48:19,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:48:19,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:48:19,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:48:19,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:48:19,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:48:19,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:48:19,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:48:19,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:48:19,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:48:19,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:48:19,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:48:19,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:48:19,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:48:19,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:48:19,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:48:19,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:48:19,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:48:19,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:48:19,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:48:19,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:48:19,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-18 18:48:19,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:48:19,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:48:19,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:48:19,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:48:19,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:48:19,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:48:19,842 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:48:19,842 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 18:48:19,842 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 18:48:19,843 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 18:48:19,844 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 18:48:19,844 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 18:48:19,844 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 18:48:19,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:48:19,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:48:19,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:48:19,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:48:19,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 18:48:19,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 18:48:19,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 18:48:19,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:48:19,846 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 18:48:19,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:48:19,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 18:48:19,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:48:19,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:48:19,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:48:19,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:48:19,849 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 18:48:19,849 INFO L138 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_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2022-11-18 18:48:20,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:48:20,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:48:20,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:48:20,176 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:48:20,177 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:48:20,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2022-11-18 18:48:20,252 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/data/ca3fd3982/0ba1126915e14c538d85f9f0a15caeb3/FLAG39d5fad8f [2022-11-18 18:48:20,699 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:48:20,700 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2022-11-18 18:48:20,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/data/ca3fd3982/0ba1126915e14c538d85f9f0a15caeb3/FLAG39d5fad8f [2022-11-18 18:48:21,082 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/data/ca3fd3982/0ba1126915e14c538d85f9f0a15caeb3 [2022-11-18 18:48:21,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:48:21,088 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:48:21,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:21,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:48:21,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:48:21,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@775fb192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21, skipping insertion in model container [2022-11-18 18:48:21,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:48:21,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:48:21,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:21,388 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:48:21,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:21,419 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:48:21,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21 WrapperNode [2022-11-18 18:48:21,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:21,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:21,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:48:21,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:48:21,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,455 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-11-18 18:48:21,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:21,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:48:21,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:48:21,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:48:21,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,475 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:48:21,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:48:21,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:48:21,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:48:21,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (1/1) ... [2022-11-18 18:48:21,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:21,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:21,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:21,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 18:48:21,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:48:21,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:48:21,635 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:48:21,639 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:48:21,725 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:48:21,731 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:48:21,731 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:48:21,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:21 BoogieIcfgContainer [2022-11-18 18:48:21,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:48:21,734 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 18:48:21,734 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 18:48:21,739 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 18:48:21,740 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 18:48:21,741 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 06:48:21" (1/3) ... [2022-11-18 18:48:21,742 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a976a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 06:48:21, skipping insertion in model container [2022-11-18 18:48:21,742 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 18:48:21,742 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:21" (2/3) ... [2022-11-18 18:48:21,742 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a976a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 06:48:21, skipping insertion in model container [2022-11-18 18:48:21,743 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 18:48:21,743 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:21" (3/3) ... [2022-11-18 18:48:21,744 INFO L332 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2022-11-18 18:48:21,799 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 18:48:21,799 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 18:48:21,799 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 18:48:21,799 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 18:48:21,799 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 18:48:21,800 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 18:48:21,800 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 18:48:21,800 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 18:48:21,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2022-11-18 18:48:21,820 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-18 18:48:21,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:48:21,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:48:21,826 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 18:48:21,826 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 18:48:21,827 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 18:48:21,827 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2022-11-18 18:48:21,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-18 18:48:21,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:48:21,828 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:48:21,828 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 18:48:21,829 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 18:48:21,836 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 5#L18-2true [2022-11-18 18:48:21,836 INFO L750 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~y~0#1 >= 0); 9#L19true assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 2#L19-2true main_~x~0#1 := 1 + main_~x~0#1; 5#L18-2true [2022-11-18 18:48:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-18 18:48:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:21,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812019730] [2022-11-18 18:48:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:21,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:21,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:21,976 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2022-11-18 18:48:21,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:21,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056490484] [2022-11-18 18:48:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:21,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:22,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:22,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:22,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:22,026 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2022-11-18 18:48:22,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:22,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964610890] [2022-11-18 18:48:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:22,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:22,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964610890] [2022-11-18 18:48:22,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964610890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:22,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:22,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:22,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665342032] [2022-11-18 18:48:22,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:22,255 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:48:22,256 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:48:22,256 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:48:22,256 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:48:22,256 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 18:48:22,256 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,257 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:48:22,257 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:48:22,257 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2022-11-18 18:48:22,257 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:48:22,258 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:48:22,276 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:22,292 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:22,297 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:22,301 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:22,393 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:48:22,400 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 18:48:22,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:22,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:22,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-18 18:48:22,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:22,415 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:22,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:22,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:22,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:22,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-18 18:48:22,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:48:22,458 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:22,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:22,513 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=51} Honda state: {ULTIMATE.start_main_~x~0#1=51} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}] Lambdas: [12, 8, 1] Nus: [1, 0] [2022-11-18 18:48:22,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:22,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:22,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:22,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:22,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:22,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-18 18:48:22,571 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:22,571 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:48:22,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:22,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:22,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:22,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-18 18:48:22,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:22,585 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:22,619 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:22,619 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:48:22,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:22,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:22,627 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:22,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-18 18:48:22,636 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:22,639 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:22,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:22,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:22,685 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:22,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-18 18:48:22,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:48:22,692 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:22,731 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 18:48:22,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:22,735 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:48:22,735 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:48:22,736 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:48:22,736 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:48:22,736 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 18:48:22,736 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,736 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:48:22,736 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:48:22,736 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2022-11-18 18:48:22,737 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:48:22,737 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:48:22,740 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:22,748 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:22,751 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:22,755 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:22,811 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:48:22,815 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 18:48:22,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:22,818 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:22,831 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 [2022-11-18 18:48:22,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-18 18:48:22,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:22,845 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:22,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:22,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:22,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:22,849 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:22,849 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:22,875 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:22,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:22,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:22,885 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:22,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-18 18:48:22,889 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 [2022-11-18 18:48:22,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:22,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:22,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:22,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:22,905 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 18:48:22,905 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 18:48:22,922 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:22,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-18 18:48:22,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:22,930 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:22,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-18 18:48:22,932 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 [2022-11-18 18:48:22,945 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:22,945 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:22,945 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:22,945 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:22,949 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 18:48:22,949 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 18:48:22,970 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:22,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:22,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:22,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:22,979 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:22,997 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 [2022-11-18 18:48:23,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:23,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:23,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:23,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:23,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:23,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:23,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:23,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-18 18:48:23,027 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 18:48:23,032 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 18:48:23,032 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 18:48:23,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:23,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:23,035 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:23,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-18 18:48:23,043 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 18:48:23,043 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 18:48:23,043 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 18:48:23,044 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2022-11-18 18:48:23,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:23,057 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 18:48:23,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:23,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:48:23,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:23,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:23,123 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:48:23,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:23,226 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 [2022-11-18 18:48:23,229 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-18 18:48:23,277 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 29 states and 36 transitions. Complement of second has 8 states. [2022-11-18 18:48:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 18:48:23,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-18 18:48:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2022-11-18 18:48:23,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 3 letters. [2022-11-18 18:48:23,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:23,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2022-11-18 18:48:23,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:23,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 6 letters. [2022-11-18 18:48:23,296 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:23,297 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2022-11-18 18:48:23,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-18 18:48:23,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 15 transitions. [2022-11-18 18:48:23,306 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-11-18 18:48:23,307 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-11-18 18:48:23,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2022-11-18 18:48:23,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:48:23,308 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2022-11-18 18:48:23,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2022-11-18 18:48:23,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-11-18 18:48:23,331 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) [2022-11-18 18:48:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2022-11-18 18:48:23,333 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-11-18 18:48:23,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:23,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:23,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:23,337 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-18 18:48:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:23,349 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-11-18 18:48:23,349 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-11-18 18:48:23,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-18 18:48:23,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2022-11-18 18:48:23,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-18 18:48:23,350 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-18 18:48:23,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2022-11-18 18:48:23,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:23,351 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-18 18:48:23,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2022-11-18 18:48:23,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-11-18 18:48:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2022-11-18 18:48:23,352 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-18 18:48:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:23,353 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-18 18:48:23,354 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-18 18:48:23,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2022-11-18 18:48:23,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-18 18:48:23,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:48:23,354 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:48:23,355 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-18 18:48:23,355 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 18:48:23,355 INFO L748 eck$LassoCheckResult]: Stem: 104#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 105#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 108#L18-2 assume !!(main_~y~0#1 >= 0); 107#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 102#L19-2 [2022-11-18 18:48:23,355 INFO L750 eck$LassoCheckResult]: Loop: 102#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 103#L18-2 assume !!(main_~y~0#1 >= 0); 106#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 102#L19-2 [2022-11-18 18:48:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-18 18:48:23,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:23,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612620606] [2022-11-18 18:48:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:23,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:23,366 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:23,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:23,367 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 2 times [2022-11-18 18:48:23,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:23,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288693664] [2022-11-18 18:48:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:23,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:23,372 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:23,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:23,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:23,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1810662097, now seen corresponding path program 1 times [2022-11-18 18:48:23,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:23,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133918671] [2022-11-18 18:48:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:23,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:23,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:23,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133918671] [2022-11-18 18:48:23,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133918671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:48:23,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573363572] [2022-11-18 18:48:23,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:23,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:23,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:23,419 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:23,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:48:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:23,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:48:23,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:23,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:23,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573363572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:48:23,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:48:23,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-18 18:48:23,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518249427] [2022-11-18 18:48:23,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:23,579 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:48:23,579 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:48:23,579 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:48:23,579 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:48:23,580 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 18:48:23,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:23,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:48:23,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:48:23,580 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2022-11-18 18:48:23,580 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:48:23,580 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:48:23,582 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:23,585 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:23,591 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:23,595 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:23,645 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:48:23,645 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 18:48:23,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:23,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:23,647 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:23,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:23,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:23,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-18 18:48:23,723 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:23,723 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:48:23,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:23,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:23,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:23,754 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:23,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:23,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:23,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-18 18:48:23,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:23,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:23,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:23,796 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:23,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:48:23,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:23,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-18 18:48:23,903 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:23,903 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [11, 1, 4] Nus: [0, 0] [2022-11-18 18:48:23,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:23,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:23,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:23,918 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:23,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-18 18:48:23,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:23,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:23,941 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:23,942 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:48:23,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:23,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:23,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:23,947 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:23,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-18 18:48:23,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:23,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:23,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:23,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:23,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:23,982 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:23,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-18 18:48:23,985 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:48:23,985 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:24,023 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 18:48:24,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-11-18 18:48:24,031 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:48:24,031 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:48:24,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:48:24,031 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:48:24,032 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 18:48:24,032 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:24,032 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:48:24,032 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:48:24,032 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2022-11-18 18:48:24,032 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:48:24,032 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:48:24,033 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:24,044 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:24,049 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:24,057 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:24,123 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:48:24,123 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 18:48:24,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:24,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:24,127 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:24,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-18 18:48:24,140 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 [2022-11-18 18:48:24,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:24,155 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:24,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:24,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:24,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:24,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:24,158 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:24,175 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:24,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:24,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:24,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:24,180 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:24,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-18 18:48:24,185 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 [2022-11-18 18:48:24,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:24,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:24,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:24,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:24,199 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 18:48:24,199 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 18:48:24,225 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:24,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:24,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:24,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:24,229 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:24,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-18 18:48:24,232 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 [2022-11-18 18:48:24,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:24,243 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:24,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:24,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:24,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:24,244 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:24,244 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:24,256 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 18:48:24,260 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 18:48:24,260 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 18:48:24,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:24,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:24,263 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:24,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-18 18:48:24,264 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 18:48:24,265 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 18:48:24,265 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 18:48:24,265 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2022-11-18 18:48:24,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:24,269 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 18:48:24,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:24,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:48:24,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:24,323 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:48:24,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:24,367 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 [2022-11-18 18:48:24,367 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-11-18 18:48:24,380 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) Result 13 states and 16 transitions. Complement of second has 7 states. [2022-11-18 18:48:24,381 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 [2022-11-18 18:48:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-11-18 18:48:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2022-11-18 18:48:24,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 3 letters. [2022-11-18 18:48:24,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:24,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-18 18:48:24,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:24,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 6 letters. [2022-11-18 18:48:24,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:24,383 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2022-11-18 18:48:24,384 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-18 18:48:24,385 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2022-11-18 18:48:24,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-18 18:48:24,385 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-18 18:48:24,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2022-11-18 18:48:24,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:48:24,385 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-18 18:48:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2022-11-18 18:48:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-18 18:48:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-18 18:48:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-11-18 18:48:24,387 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-18 18:48:24,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:24,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:24,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:24,388 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2022-11-18 18:48:24,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:24,412 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-18 18:48:24,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2022-11-18 18:48:24,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-18 18:48:24,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 18 transitions. [2022-11-18 18:48:24,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-18 18:48:24,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-11-18 18:48:24,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2022-11-18 18:48:24,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:24,414 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-11-18 18:48:24,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2022-11-18 18:48:24,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-11-18 18:48:24,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 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) [2022-11-18 18:48:24,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-18 18:48:24,417 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-18 18:48:24,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:48:24,418 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-18 18:48:24,418 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-18 18:48:24,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2022-11-18 18:48:24,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-18 18:48:24,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:48:24,419 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:48:24,419 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2022-11-18 18:48:24,419 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 18:48:24,420 INFO L748 eck$LassoCheckResult]: Stem: 240#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 241#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 242#L18-2 assume !!(main_~y~0#1 >= 0); 243#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 238#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 239#L18-2 assume !!(main_~y~0#1 >= 0); 253#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 252#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 251#L18-2 assume !!(main_~y~0#1 >= 0); 250#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 249#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 248#L18-2 assume !!(main_~y~0#1 >= 0); 247#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 245#L19-2 [2022-11-18 18:48:24,420 INFO L750 eck$LassoCheckResult]: Loop: 245#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 246#L18-2 assume !!(main_~y~0#1 >= 0); 244#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 245#L19-2 [2022-11-18 18:48:24,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:24,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1702507665, now seen corresponding path program 1 times [2022-11-18 18:48:24,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:24,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280857044] [2022-11-18 18:48:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:24,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:24,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:24,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:24,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:24,439 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 3 times [2022-11-18 18:48:24,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:24,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506648972] [2022-11-18 18:48:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:24,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:24,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:24,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash -137031896, now seen corresponding path program 2 times [2022-11-18 18:48:24,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:24,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329356631] [2022-11-18 18:48:24,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:24,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:24,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:24,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329356631] [2022-11-18 18:48:24,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329356631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:48:24,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672114336] [2022-11-18 18:48:24,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:48:24,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:24,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:24,544 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:24,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 18:48:24,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:24,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:48:24,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:48:24,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:48:24,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:24,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:24,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672114336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:48:24,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:48:24,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-18 18:48:24,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327173149] [2022-11-18 18:48:24,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:24,838 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:48:24,838 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:48:24,838 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:48:24,839 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:48:24,839 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 18:48:24,839 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:24,839 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:48:24,839 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:48:24,839 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2022-11-18 18:48:24,840 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:48:24,840 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:48:24,843 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:24,850 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:24,853 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:24,859 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:24,913 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:48:24,913 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 18:48:24,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:24,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:24,915 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:24,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:24,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:24,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-18 18:48:24,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-11-18 18:48:24,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:24,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:24,948 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:24,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-18 18:48:24,950 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:48:24,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:25,013 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:25,013 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [11, 1, 4] Nus: [0, 0] [2022-11-18 18:48:25,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:25,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:25,020 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:25,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:25,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:25,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-18 18:48:25,046 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:25,046 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:48:25,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-11-18 18:48:25,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:25,050 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:25,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-18 18:48:25,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:25,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:25,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-11-18 18:48:25,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:25,074 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:25,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-18 18:48:25,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:48:25,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:25,123 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 18:48:25,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:25,132 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:48:25,132 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:48:25,132 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:48:25,132 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:48:25,132 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 18:48:25,132 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,132 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:48:25,132 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:48:25,132 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2022-11-18 18:48:25,133 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:48:25,133 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:48:25,134 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:25,141 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:25,145 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:25,151 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:25,205 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:48:25,205 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 18:48:25,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:25,207 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:25,216 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 [2022-11-18 18:48:25,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:25,230 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:25,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:25,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:25,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:25,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:25,232 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:25,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-18 18:48:25,241 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:25,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:25,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:25,253 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:25,259 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 [2022-11-18 18:48:25,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:25,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:25,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:25,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:25,283 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-18 18:48:25,283 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-18 18:48:25,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-18 18:48:25,303 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:25,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:25,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:25,312 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:25,323 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 [2022-11-18 18:48:25,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:25,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:25,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:25,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:25,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:25,337 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:25,337 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:25,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-18 18:48:25,355 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 18:48:25,357 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 18:48:25,357 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 18:48:25,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:25,363 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:25,364 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 18:48:25,364 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 18:48:25,364 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 18:48:25,365 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2022-11-18 18:48:25,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-18 18:48:25,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:25,372 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 18:48:25,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:25,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:48:25,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:25,449 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:48:25,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:25,467 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 [2022-11-18 18:48:25,467 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 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) [2022-11-18 18:48:25,477 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. 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 18 states and 19 transitions. Complement of second has 7 states. [2022-11-18 18:48:25,478 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 [2022-11-18 18:48:25,479 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) [2022-11-18 18:48:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2022-11-18 18:48:25,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-18 18:48:25,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:25,480 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 18:48:25,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:25,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:48:25,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:25,528 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:48:25,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:25,553 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 [2022-11-18 18:48:25,554 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 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) [2022-11-18 18:48:25,569 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. 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 18 states and 19 transitions. Complement of second has 7 states. [2022-11-18 18:48:25,570 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 [2022-11-18 18:48:25,571 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) [2022-11-18 18:48:25,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2022-11-18 18:48:25,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-18 18:48:25,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:25,573 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 18:48:25,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:25,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:48:25,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:25,622 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:48:25,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:25,640 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 [2022-11-18 18:48:25,640 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 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) [2022-11-18 18:48:25,653 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. 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 25 states and 27 transitions. Complement of second has 6 states. [2022-11-18 18:48:25,653 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 [2022-11-18 18:48:25,654 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) [2022-11-18 18:48:25,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2022-11-18 18:48:25,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-18 18:48:25,655 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:25,655 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 16 letters. Loop has 3 letters. [2022-11-18 18:48:25,655 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:25,655 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 6 letters. [2022-11-18 18:48:25,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:25,656 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2022-11-18 18:48:25,657 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-18 18:48:25,657 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 21 transitions. [2022-11-18 18:48:25,657 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-18 18:48:25,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-11-18 18:48:25,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2022-11-18 18:48:25,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:48:25,658 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-18 18:48:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2022-11-18 18:48:25,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-11-18 18:48:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-18 18:48:25,660 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-18 18:48:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:48:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:48:25,661 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:25,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:25,701 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2022-11-18 18:48:25,701 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 51 transitions. [2022-11-18 18:48:25,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-18 18:48:25,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 37 states and 39 transitions. [2022-11-18 18:48:25,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2022-11-18 18:48:25,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2022-11-18 18:48:25,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 39 transitions. [2022-11-18 18:48:25,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:48:25,704 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-11-18 18:48:25,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 39 transitions. [2022-11-18 18:48:25,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-11-18 18:48:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 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) [2022-11-18 18:48:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-11-18 18:48:25,707 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-11-18 18:48:25,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:48:25,708 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-11-18 18:48:25,708 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-18 18:48:25,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 37 transitions. [2022-11-18 18:48:25,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-18 18:48:25,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:48:25,709 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:48:25,710 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 9, 9, 1, 1] [2022-11-18 18:48:25,710 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 18:48:25,711 INFO L748 eck$LassoCheckResult]: Stem: 668#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 669#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 670#L18-2 assume !!(main_~y~0#1 >= 0); 671#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 663#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 664#L18-2 assume !!(main_~y~0#1 >= 0); 697#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 696#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 695#L18-2 assume !!(main_~y~0#1 >= 0); 694#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 693#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 692#L18-2 assume !!(main_~y~0#1 >= 0); 691#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 690#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 689#L18-2 assume !!(main_~y~0#1 >= 0); 688#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 687#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 686#L18-2 assume !!(main_~y~0#1 >= 0); 685#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 684#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 683#L18-2 assume !!(main_~y~0#1 >= 0); 682#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 681#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 680#L18-2 assume !!(main_~y~0#1 >= 0); 679#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 678#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 677#L18-2 assume !!(main_~y~0#1 >= 0); 676#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 675#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 667#L18-2 [2022-11-18 18:48:25,711 INFO L750 eck$LassoCheckResult]: Loop: 667#L18-2 assume !!(main_~y~0#1 >= 0); 674#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 673#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 667#L18-2 [2022-11-18 18:48:25,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:25,711 INFO L85 PathProgramCache]: Analyzing trace with hash -191897876, now seen corresponding path program 2 times [2022-11-18 18:48:25,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:25,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621307503] [2022-11-18 18:48:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:25,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:25,728 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:25,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:25,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:25,742 INFO L85 PathProgramCache]: Analyzing trace with hash 40814, now seen corresponding path program 1 times [2022-11-18 18:48:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:25,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212802401] [2022-11-18 18:48:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:25,746 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:25,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:25,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:25,764 INFO L85 PathProgramCache]: Analyzing trace with hash -228141917, now seen corresponding path program 3 times [2022-11-18 18:48:25,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:25,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873394077] [2022-11-18 18:48:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:25,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:25,793 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:25,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:25,846 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:48:25,846 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:48:25,846 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:48:25,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:48:25,847 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 18:48:25,847 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,847 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:48:25,847 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:48:25,847 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2022-11-18 18:48:25,847 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:48:25,847 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:48:25,849 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:25,855 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:25,861 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:25,864 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:25,909 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:48:25,909 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 18:48:25,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:25,911 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:25,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:25,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:25,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-18 18:48:25,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:25,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:25,942 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:25,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:48:25,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:25,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-18 18:48:25,987 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:25,987 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=0} Honda state: {ULTIMATE.start_main_~y~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=1}, {ULTIMATE.start_main_~y~0#1=0}] Lambdas: [11, 1, 11] Nus: [0, 0] [2022-11-18 18:48:25,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-11-18 18:48:25,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:25,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:25,997 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:26,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:26,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:26,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-18 18:48:26,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:26,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:26,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:26,052 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:26,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:48:26,056 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:26,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-18 18:48:26,099 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 18:48:26,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:26,103 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:48:26,103 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:48:26,103 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:48:26,103 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:48:26,104 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 18:48:26,104 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:26,104 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:48:26,104 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:48:26,104 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2022-11-18 18:48:26,104 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:48:26,104 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:48:26,105 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:26,111 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:26,117 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:26,120 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:26,169 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:48:26,169 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 18:48:26,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:26,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:26,170 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:26,174 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 [2022-11-18 18:48:26,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:26,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:26,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:26,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:26,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:26,187 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:26,188 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:26,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-18 18:48:26,203 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:26,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-11-18 18:48:26,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:26,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:26,207 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:26,210 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 [2022-11-18 18:48:26,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-18 18:48:26,222 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:26,222 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:26,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:26,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:26,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:26,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:26,223 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:26,241 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 18:48:26,255 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 18:48:26,256 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 18:48:26,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:26,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:26,263 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:26,271 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 18:48:26,271 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 18:48:26,271 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 18:48:26,271 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 101 Supporting invariants [] [2022-11-18 18:48:26,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-18 18:48:26,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:26,276 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 18:48:26,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:26,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:48:26,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:26,360 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:48:26,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:26,380 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 [2022-11-18 18:48:26,381 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3 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) [2022-11-18 18:48:26,398 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3. 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 61 states and 65 transitions. Complement of second has 6 states. [2022-11-18 18:48:26,398 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 [2022-11-18 18:48:26,400 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) [2022-11-18 18:48:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-18 18:48:26,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 3 letters. [2022-11-18 18:48:26,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:26,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 32 letters. Loop has 3 letters. [2022-11-18 18:48:26,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:26,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 6 letters. [2022-11-18 18:48:26,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:26,402 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2022-11-18 18:48:26,409 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-18 18:48:26,409 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2022-11-18 18:48:26,409 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-18 18:48:26,410 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-18 18:48:26,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-18 18:48:26,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:26,410 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:48:26,410 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:48:26,410 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:48:26,411 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-18 18:48:26,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-18 18:48:26,411 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-18 18:48:26,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-18 18:48:26,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 06:48:26 BoogieIcfgContainer [2022-11-18 18:48:26,419 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 18:48:26,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:48:26,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:48:26,420 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:48:26,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:21" (3/4) ... [2022-11-18 18:48:26,423 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 18:48:26,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:48:26,423 INFO L158 Benchmark]: Toolchain (without parser) took 5335.44ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 88.7MB in the beginning and 78.1MB in the end (delta: 10.6MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2022-11-18 18:48:26,424 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:48:26,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.35ms. Allocated memory is still 127.9MB. Free memory was 88.4MB in the beginning and 103.4MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:48:26,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.96ms. Allocated memory is still 127.9MB. Free memory was 103.4MB in the beginning and 102.5MB in the end (delta: 888.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:48:26,425 INFO L158 Benchmark]: Boogie Preprocessor took 20.34ms. Allocated memory is still 127.9MB. Free memory was 102.5MB in the beginning and 101.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:48:26,425 INFO L158 Benchmark]: RCFGBuilder took 254.09ms. Allocated memory is still 127.9MB. Free memory was 101.3MB in the beginning and 93.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:48:26,425 INFO L158 Benchmark]: BuchiAutomizer took 4685.29ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 93.0MB in the beginning and 78.1MB in the end (delta: 14.8MB). Peak memory consumption was 75.8MB. Max. memory is 16.1GB. [2022-11-18 18:48:26,426 INFO L158 Benchmark]: Witness Printer took 3.21ms. Allocated memory is still 188.7MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:48:26,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.35ms. Allocated memory is still 127.9MB. Free memory was 88.4MB in the beginning and 103.4MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.96ms. Allocated memory is still 127.9MB. Free memory was 103.4MB in the beginning and 102.5MB in the end (delta: 888.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.34ms. Allocated memory is still 127.9MB. Free memory was 102.5MB in the beginning and 101.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 254.09ms. Allocated memory is still 127.9MB. Free memory was 101.3MB in the beginning and 93.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4685.29ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 93.0MB in the beginning and 78.1MB in the end (delta: 14.8MB). Peak memory consumption was 75.8MB. Max. memory is 16.1GB. * Witness Printer took 3.21ms. Allocated memory is still 188.7MB. Free memory is still 78.1MB. 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function 101 + -2 * x and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.6s and 5 iterations. TraceHistogramMax:9. Analysis of lassos took 3.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 5 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 46 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf94 smp100 dnf100 smp100 tf112 neg95 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 4 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-18 18:48:26,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:26,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:26,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-18 18:48:27,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-18 18:48:27,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db45d0c9-81d6-4715-a995-2ea028854f11/bin/uautomizer-TMbwUNV5ro/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